CN102780944B - Active sound box control method - Google Patents
Active sound box control method Download PDFInfo
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- CN102780944B CN102780944B CN201210281935.2A CN201210281935A CN102780944B CN 102780944 B CN102780944 B CN 102780944B CN 201210281935 A CN201210281935 A CN 201210281935A CN 102780944 B CN102780944 B CN 102780944B
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Abstract
The invention relates to sound box control technology, in particular to an active sound box control method. The method comprises: S10, adjusting each DSP (digital signal processor) parameter of a DSP according to an external control signal; S20, receiving an audio signal inputted from outside of the sound box, and transmitting to the DSP; S30, the DSP executing a plurality of signal processing operation steps in an assembly line manner, and dividing the processed audio signal into a plurality of output audio signals corresponding to each power amplifier unit; S40, the DSP subjecting each output audio signal to a plurality of signal processing operation steps in the assembly line manner; and S50, the power amplifier unit receiving the corresponding output audio signal processed by step S40, and transmitting to the corresponding speaker unit. The active sound box control method provided by the invention can simplify the difficulty in debugging and calibrating the sound box system by setting the array layer DSP parameters for synchronously adjusting the plurality of sound boxes, thereby reducing the work load, and ensuring the system debugging effect.
Description
Technical field
The present invention relates to speaker control technology, specifically a kind of active sound box control method.
Background technology
Embedded digital signal processor(DSP)With the audio amplifier of power amplifier(Also referred to as active audio amplifier)Can be by data signal
Reason device carries out the operation of the audios such as EQ adjustment, time delay, amplitude limit and frequency dividing to input audio signal, makes audio amplifier reach best effort shape
State.
It is as follows to the conventional method of adjustment of the sound system of active audio amplifier composition at present:(1)First adjust the number of single audio amplifier
The input processing parameter and output processing parameter of word signal processor(Two divided-frequency above audio amplifier), such as EQ, time delay, amplitude limit etc.;
(2)The effect of sound system is tested, by rule of thumb at the data signal to further refinement test data to related audio amplifier
Reason device parameter is adjusted;(3)The whole structure of sound system is tested again, according to test result, again to active
The digital signal processor parameter of audio amplifier is adjusted.That is, to realize preferably system acoustic effect, needing constantly
According to overall acoustic efficiency, the parameter of each audio amplifier digital signal processor is adjusted repeatedly.
This sound system(Speaker system)Debugging bearing calibration there is problems with:
(1)System debug correct operation is loaded down with trivial details, complexity, and workload is big.Due to affecting the factor of system acoustic effect a lot,
Adjust which audio amplifier, and which parameter of adjustment audio amplifier, have no a fixed pattern, can only engineering staff can only one by one audio amplifier or by
Region(Audio amplifier in region is also to be adjusted one by one)It is adjusted, further according to test result again to each audio amplifier after adjustment
It is adjusted, that is, needs the acoustic efficiency for being repeated continuously measuring system and adjust each audio amplifier, can be only achieved preferably system
Sound effect.The original workload that one by one audio amplifier is adjusted is very big, and also needs to repeat many times now(Number of times is unknown, institute
The time of consuming and required workload are very huge.For layman, sound system debugging school
Just it is practically impossible to completing for task.
(2)System it cannot be guaranteed that can obtain preferably acoustic efficiency even across repeatedly adjustment correction.As above institute
State, affect the factor of acoustic efficiency a lot, be time-consuming many times, which engineering staff often rule of thumb judges
Which parameter of which audio amplifier should be adjusted.Even if one by one audio amplifier is adjusted engineering staff, but because sound system is one
Systematic engineering of business, can influence each other between each audio amplifier, and engineering staff to each audio amplifier when being adjusted, it is difficult in advance
Survey and judge the audio amplifier after adjustment, what can be produced on other audio amplifiers affects(Or other audio amplifiers can be assorted to this audio amplifier generation
Affect), therefore can only be estimated by rule of thumb.Therefore, this debugging bearing calibration, much less ordinary person, even right
In the personnel through professional training, cannot also ensure that sound can obtain gratifying system sound effect.
Therefore simplify sound system audio amplifier debugging correct operation, improve debugging efficiency, and safeguards system debugging effect is one
Individual technical problem urgently to be resolved hurrily.Solve this technical barrier important for the development and application that promote Specialty Hi-Fi technology have
Effect.
The content of the invention
The first technical problem that the present invention is solved is to provide a kind of active sound box control method, to simplify by being controlled using this
The debugging correct operation of the sound system that the active audio amplifier of method is constituted, improves debugging efficiency, and safeguards system debugging effect.
To solve above-mentioned technical problem, the present invention is using technical scheme:
A kind of active sound box control method, wherein:The active audio amplifier include signal input unit, digital signal processor,
Microprocessor, multiple power amplifier units and multiple loudspeaker units, each power amplifier unit is connected with the loudspeaker unit for matching;
The digital signal processor is provided with data memory module, and be stored with one group of input processing ginseng in the data memory module
Number and respectively multigroup output processing parameter corresponding with each power amplifier unit, per group object, output processing parameter includes one or many
Individual DSP parameters;
This group of input processing parameter includes multiple entity DSP data, and each entity DSP packets contain one with the entity
The corresponding audio amplifier layer DSP parameters of species of DSP data, the audio amplifier layer DSP parameters are the DSP ginsengs arranged for the active audio amplifier
Number;And at least one entity DSP data also include one and join with its audio amplifier layer DSP parameter species identical array layer DSP
Number, array layer DSP parameters are each audio amplifier member for the affiliated array group of the active audio amplifier and the DSP parameters that arrange, should
Array group includes one or more active audio amplifiers;
The method is comprised the following steps:
Step S10:The microprocessor is according to external control signal to each DSP parameter of this group of input processing parameter and each
Each DSP parameter of group output processing parameter is adjusted;
Step S20:The signal input unit receives the audio signal of audio amplifier outside input, and transmits to the data signal
Reason device;
Step S30:The digital signal processor performs in a pipeline fashion multiple signal processing operations steps, the group input
Each DSP parameters one signal processing operations step of correspondence of processing parameter, each signal processing operations step is according to corresponding
DSP parameters carry out corresponding signal processing operations to audio signal;By through step S30 process after audio signal be divided into respectively
The corresponding multiple-channel output audio signal of individual power amplifier unit;
Step S40:For per exports audio signal all the way, the digital signal processor performs in a pipeline fashion multiple letters
Number operating procedure is processed, each the DSP parameter corresponding one with the corresponding one group of output processing parameter of exports audio signal all the way
Individual signal processing operations step, each signal processing operations step is according to corresponding DSP parameters to the exports audio signal all the way
Carry out corresponding signal processing operations;
Step S50:Each power amplifier unit receives the corresponding exports audio signal all the way through the process of step S40, and will
This all the way exports audio signal be amplified process after transmit to corresponding loudspeaker unit.
Compared with prior art, beneficial effect is:
Prior art is if desired optimized to the sound effect of whole sound system, needs to carry out one by one each audio amplifier
The sound of the affiliated array group of the audio amplifier and whole sound system after adjustment correction repeatedly, but also the indivedual audio amplifiers of unpredictable adjustment
Ring how effect can change, increased the difficulty and complexity of system debug correction, therefore the sound system of prior art is adjusted
Not only difficulty is larger for examination, needs very professional sound technique personnel to be operated, and the workload debugged is very big, and adjusts
Examination effect cannot also be ensured.
Based on the active sound box control method of this technology, engineers and technicians can give up the biography for accurately adjusting each audio amplifier
System way, then by the basis of basic correction each audio amplifier, being carried out to the audio amplifier member of each array group in units of group
Unified debugging correction so that the acoustics of each array group and whole sound system(Transmission frequency characteristic)Reach making for system
With requiring, the overall acoustic efficiency of sound system is optimized to greatest extent, but the difficulty and workload of sound system debugging are significantly
Reduce.
This technology is the angle that uses from system thinking deeply the debugging correction work of whole audio amplifier, has both taken into full account audio amplifier
Self-characteristic, takes into full account between each audio amplifier of same array group, influences each other between each array group of same system again
Factor, by single audio amplifier DSP parameter adjustments, the parameter adjustment of array group DSP(Also enter in some improvement projects of this technology
One step passes through system group DSP parameter adjustment), from audio amplifier itself, two aspects of speaker array group(In some technical sides of this technology
System layer is also add in case)The DSP parameters of each audio amplifier are adjusted, this adjustment seems not accurate enough, is not every
Individual audio amplifier all can be debugged to optimum state, but can but obtain optimal system sound effect --- and exactly sound system is actual makes for this
With required.
Sum it up, this technology not only can simplify the difficulty of sound system debugging correction, workload is reduced, but also can
The system sound effect for making us more being satisfied with can be obtained when debugging with safeguards system.
Description of the drawings
Fig. 1 is the structural representation of the active audio amplifier of the present embodiment one;
Fig. 2 is the schematic flow sheet of the active sound box control method of the present embodiment one.
Specific embodiment
Embodiments of the invention are further described below in conjunction with the accompanying drawings.
Embodiment one
As shown in figure 1, the active audio amplifier of the present embodiment(By taking two divided-frequency audio amplifier as an example)Including signal input unit, numeral letter
Number processor, microprocessor, multiple power amplifier units and multiple loudspeaker units, each power amplifier unit and the loudspeaker list for matching
Unit's connection, loudspeaker unit can be made up of one or more loudspeakers.
The digital signal processor is provided with data memory module, and be stored with one group of input processing ginseng in the data memory module
Number and respectively multigroup output processing parameter corresponding with each power amplifier unit, per group object, output processing parameter includes one or many
Individual DSP parameters;
This group of input processing parameter includes multiple entity DSP data(The species of entity DSP data is not limited, input
Reason parameter can include the entity DSP data of multiple identical types, it is also possible to comprising different multiple entity DSP data),
Each entity DSP packets contain an audio amplifier layer DSP parameter corresponding with the species of entity DSP data, audio amplifier layer DSP
Parameter is the DSP parameters arranged for the active audio amplifier;And at least one entity DSP data also include one with its audio amplifier
Layer DSP parameter species identical array layer DSP parameters, array layer DSP parameters are for the affiliated array group of the active audio amplifier
Each audio amplifier member and the DSP parameters that arrange, the array group includes one or more active audio amplifiers.
As shown in Fig. 2 the active sound box control method of the present embodiment is comprised the following steps:
Step S10:The microprocessor is according to external control signal to each DSP parameter of this group of input processing parameter and each
Each DSP parameter of group output processing parameter is adjusted;
Step S20:The signal input unit receives the audio signal of audio amplifier outside input, and transmits to the data signal
Reason device;
Step S30:The digital signal processor performs in a pipeline fashion multiple signal processing operations steps, the group input
Each DSP parameters one signal processing operations step of correspondence of processing parameter, each signal processing operations step is according to corresponding
DSP parameters carry out corresponding signal processing operations to audio signal;By through step S30 process after audio signal be divided into respectively
The corresponding multiple-channel output audio signal of individual power amplifier unit;
Step S40:For per exports audio signal all the way, the digital signal processor performs in a pipeline fashion multiple letters
Number operating procedure is processed, each the DSP parameter corresponding one with the corresponding one group of output processing parameter of exports audio signal all the way
Individual signal processing operations step, each signal processing operations step is according to corresponding DSP parameters to the exports audio signal all the way
Carry out corresponding signal processing operations;
Step S50:Each power amplifier unit receives the corresponding exports audio signal all the way through the process of step S40, and will
This all the way exports audio signal be amplified process after transmit to corresponding loudspeaker unit.
In this technique, a DSP parameter is not meant to the DSP parameter only one of which numerical value, and a DSP parameter also may be used
Can be by multiple(One group even multigroup)Numerical value is constituted, and digital signal processor performs corresponding signal according to a DSP parameter
Process(Audio effect processing)Operation, to change the transmission frequency characteristic of audio amplifier.Therefore " a DSP parameter " here it also will be understood that
One or more data required for complete certain signal processing operations, such as muting parameter and gain parameter only need to one
Individual data, and EQ parameters then need one group of data.In digital signal processor, DSP parameters one audio of correspondence
Processor.
In this technique, for adjusting the DSP parameters of single active audio amplifier(Can be any type of DSP parameters)Referred to as
Audio amplifier layer DSP parameters, i.e. the data of the audio amplifier layer DSP parameters be the audio amplifier it is exclusive, it is not shared with other audio amplifiers.Pass through
The audio amplifier layer DSP parameters of modification active audio amplifier can adjust the active audio amplifier.
And the DSP parameters of the audio amplifier member characteristics for being used to adjust array group simultaneously(Possibly any type of DSP parameters)
Referred to as array layer DSP parameters, i.e., each audio amplifier member of same array group shares the data of array layer DSP parameters.Array group
In certain array layer DSP parameters of some audio amplifier member changed, then the correspondence of remaining audio amplifier member in same array group
Array layer DSP parameters also can be identical numerical value by synchronous vacations.Can be simultaneously by changing the array layer DSP parameters of active audio amplifier
Adjustment belongs to the characteristic of each active audio amplifier of same array group, realizes the synchronous adjustment of multiple audio amplifiers.
Audio amplifier layer DSP parameters and array layer DSP parameters are relative concepts, in the prior art, the input of active audio amplifier
There was only audio amplifier layer DSP parameters in processing parameter, therefore in system compensation, audio amplifier can only be adjusted one by one.And this technology is logical
Cross and the array group DSP parameter of association is set in each audio amplifier member of array group, if changing the battle array of one of audio amplifier member
Row group DSP parameter, then the corresponding array group DSP parameter of other audio amplifiers member of the array group all can be by synchronous vacations(Need
Realize by control platform or control system), so as to realize the synchronous adjustment of multiple audio amplifiers, simplify speaker system correction
Difficulty and complexity.
Therefore the active audio amplifier of this technology not only can realize the adjustment correction of single audio amplifier, can also be to realize to multiple
Necessary basic condition is created in the synchronous adjustment correction of audio amplifier, it is possible thereby to the adjustment correction work of the whole sound system of simplification,
Adjustment effect can also be ensured.
In the present embodiment, the input processing parameter of active audio amplifier includes following one or more entities DSP data:It is defeated
Enter quiet data, input gain data, input time delay data are input into reversed polarity data, input air attenuation compensation data, input
Compression sliced data, EQ data;(Wherein each entity DSP data include audio amplifier layer DSP parameters corresponding with its species, example
Such as it is input into quiet data and is input into muting parameter, input gain packet containing audio amplifier layer input gain parameter, input comprising audio amplifier layer
Delay data includes audio amplifier layer input time delay parameter, and input reversed polarity packet containing audio amplifier layer input reversed polarity parameter, input is empty
Laboured breathing subtracts offset data comprising audio amplifier layer input air attenuation compensation parameter, and input compression sliced data includes audio amplifier layer input pressure
Contracting clipping parameter, EQ packets containing audio amplifier layer EQ parameters.Wherein at least one entity DSP data are except comprising audio amplifier layer DSP
Outside parameter, also comprising array layer DSP parameters, that is to say, that part entity DSP data only include individual layer parameter, part entity DSP
Packet contains multilayer DSP parameter;Or whole DSP data all include multilayer DSP parameter.
Per group of output processing parameter of active audio amplifier includes part-frequency point parameter, and one or more following DSP parameters:
Output BPPA parameters, output mute parameter, output gain parameters export EQ parameters, export delay parameter, output reversed polarity ginseng
Number, output squeezing clipping parameter;
In step s 30, digital signal processor selectively performs the entity DSP data included with input processing parameter
The corresponding signal processing operations step of each DSP parameter:
For each input muting parameter that the input quiet data is included, execution step S31:It is quiet according to the input
Parameter carries out silence switch process to audio signal;
For each input gain parameter that the input gain data are included, execution step S32:According to the input gain
Parameter carries out gain process to audio signal;
For each input time delay parameter that the input time delay data are included, execution step S33:According to the input time delay
Parameter carries out delay process to audio signal;
For each input reversed polarity parameter that the input reversed polarity data are included, execution step S34:According to the input
Reversed polarity parameter carries out reversed polarity operation process to audio signal;
For each input air attenuation compensation parameter that the input air attenuation compensation data are included, execution step
S35:Attenuation of air compensation deals are carried out to audio signal according to the input air attenuation compensation parameter;
For each input compression clipping parameter that the input compression sliced data is included, execution step S36:According to this
Input compression clipping parameter is compressed amplitude limiting processing to audio signal;
For each EQ parameter that the EQ data are included, execution step S37:Audio signal is carried out according to the EQ parameters
EQ process(EQ process can adopt IIR second order filters);
In step s 40, for per output signal all the way, digital signal processor is selectively performed and exports letter all the way with this
The corresponding signal processing operations step of each DSP parameter that number corresponding one group of output processing parameter is included:
Step S41:According to the part-frequency point parameter of one group of output processing parameter to this all the way exports audio signal filter
Ripple process, the frequency range of the audio signal for obtaining matches with corresponding power amplifier unit;Each follow-up is performed by pipeline system
Signal processing operations step(Scaling down processing can adopt FIR filter);
For each output BPPA parameter of one group of output processing parameter, execution step S42:Joined according to output BPPA
It is several to this all the way exports audio signal carry out phase response adjustment process;
For each output mute parameter of one group of output processing parameter, execution step S43:According to the output mute ginseng
It is several to this all the way road exports audio signal carry out silence switch process;
For each output gain parameters of one group of output processing parameter, execution step S44:According to the output gain ginseng
It is several to this all the way exports audio signal carry out gain process;
For each output EQ parameter of one group of output processing parameter, execution step S45:According to output EQ parameters pair
This all the way exports audio signal carry out EQ process;
For each output delay parameter of one group of output processing parameter, execution step S46:According to the output time delay ginseng
It is several to this all the way exports audio signal carry out delay process;
For each output reversed polarity parameter of one group of output processing parameter, execution step S47:According to the reversed polarity ginseng
It is several to this all the way exports audio signal carry out reversed polarity operation process;
For each output squeezing clipping parameter of one group of output processing parameter, execution step S48:According to the output pressure
Contracting clipping parameter to this all the way exports audio signal be compressed amplitude limiting processing.
In this technique, it is input processing parameter or defeated that digital signal processor selects the signal processing operations step for performing
Go out what the actual DSP parameters for including of processing parameter were determined.For example, if input processing parameter only comprising muting parameter and
One input time delay parameter, then digital signal processor in step s 30, will only carry out step S31 and step S33;If defeated
Enter processing parameter comprising 2 muting parameters and 2 input time delay parameters, then digital signal processor in step s 30, is performed
2 steps S31 and 2 steps S33.The situation of step S40 can be by that analogy.
The digital signal processor of this technology is still in step s 40, all either in a pipeline fashion in step S30
Signal transacting, therefore the execution sequence of each signal processing operations of step S30, and step S40 are carried out to audio signal
The operation execution sequence of each signal transacting arrange in any order, it is also possible to arranged according to particular order.In step
In rapid S30, digital signal processor only need to be processed audio signal all the way(In a pipeline fashion), and in step s 40,
Digital signal processor then needs to be respectively processed multiple-channel output audio signal, and to every exports audio signal all the way all
Signal transacting is carried out by pipeline system(Audio effect processing).
In step s 30, digital signal processor perform first signal processing operations step, its audio signal from
Signal input unit.And for the audio signal of each follow-up signal processing operations step is then from a upper signal transacting
Audio signal obtained by operating procedure.After last signal processing operations step has been performed, in addition it is also necessary to will be through current step
The rapid audio signal for processing is divided into multipath output signals.
In step s 40, it is however generally that, digital signal processor first can when processing per exports audio signal all the way
Frequency-division filter operation is carried out to each road signal, the audio signal of corresponding band is obtained, then followed by distinguishing in a pipeline fashion
Each road exports audio signal is processed.For each road exports audio signal, first letter that digital signal processor is performed
Number process operating procedure handled by audio signal be through step S30 process after corresponding exports audio signal all the way;And
Each follow-up signal processing operations step(Perform in a pipeline fashion, execution sequence can arbitrarily set)It is then previous
On the basis of signal processing operations step, audio signal is processed, and the signal processing operations step for finally performing
Suddenly audio frequency is carried out after signal transacting, in addition it is also necessary to by audio signal transmission to corresponding power amplifier unit.
In this example, it is assumed that input processing parameter includes:Input quiet data, input gain data, input time delay
Data, EQ data, wherein the input quiet data, input gain data, input time delay data are respectively only comprising audio amplifier layer DSP ginsengs
Number(Audio amplifier layer input muting parameter, audio amplifier layer input gain parameter, audio amplifier layer input time delay parameter are only included respectively), the EQ
Data include audio amplifier layer EQ parameters and array layer EQ parameters.So, in step s 30, digital signal processor will be with streamline
Mode performs following steps:Muting parameter is input into according to audio amplifier layer and performs step S31;According to audio amplifier layer input gain parameter
Step S32;According to audio amplifier layer input time delay step S33 of parameter;According to audio amplifier layer EQ step S37 of parameter, with
And according to step S37 of array layer EQ parameters.
In this example, it is assumed that per group of output processing parameter includes:One part-frequency point parameter, an output BPPA ginseng
Number, output mute parameter, output gain parameters, output EQ parameters, output delay parameter, an output
Reversed polarity parameter and an output squeezing clipping parameter.Now, in step 40, digital signal processor will be with streamline side
Formula is performed:Step S41 is performed according to the part-frequency point parameter;Step S42 is performed according to output BPPA parameters;According to this
Output mute parameter performs step S43;Step S44 is performed according to the output gain parameters;Joined according to output EQ
Number performs step S45;Step S46 is performed according to the output delay parameter;Performed according to the output reversed polarity parameter
Step S47;And step S48 is performed according to the output squeezing clipping parameter.
Embodiment two
The present embodiment is with the difference of embodiment one:The DSP data that the present embodiment is included in input processing parameter
In, include the DSP data of array layer DSP parameters also comprising one and its audio amplifier layer DSP parameter species identical system layer DSP
Parameter, the system layer DSP parameter is to be directed to each audio amplifier member of the active audio amplifier said system group and arrange, the system group
Including one or more active audio amplifiers.
The DSP parameters of the audio amplifier member characteristics for adjusting system group simultaneously(Possibly any type of DSP parameters)Claim
Each audio amplifier member for system layer DSP parameter, i.e. same system group shares the data of the system layer DSP parameter.In system group
Certain system layer DSP parameter of some audio amplifier member is changed, then the correspondence system of remaining audio amplifier member in same system group
System layer DSP parameters also can be identical numerical value by synchronous vacations.Can be adjusted simultaneously by changing the system layer DSP parameter of active audio amplifier
The characteristic of whole each active audio amplifier for belonging to same system group, realizes the synchronous adjustment of multiple audio amplifiers.
System debug timing is being carried out to speaker system, in addition to needing to debug the audio of each audio amplifier, is also being needed
The audio of each voice box group, and the audio of loudspeaker total system are debugged, prior art either debugs audio amplifier, voice box group
Or whole system, is all to could be adjusted to realize by audio amplifier one by one.This technology arranges array layer DSP in active audio amplifier
Parameter, although can realize the synchronous adjustment of multiple audio amplifiers, simplifies the debugging correction work of voice box group, ensures voice box group
Debugging effect, but can't the audio overall to speaker system be adjusted.For this purpose, this technology is further active
System layer DSP parameter is set up in input processing parameter in audio amplifier, then can further simplify the overall debugging efforts of system, entered
One step guarantees the overall audio of speaker system.
In this example, it is assumed that input processing parameter includes input quiet data, input gain data, input time delay number
According to, EQ data, the wherein input quiet data, input gain data, input time delay data only include respectively audio amplifier layer DSP parameters
(Audio amplifier layer input muting parameter, audio amplifier layer input gain parameter, audio amplifier layer input time delay parameter are only included respectively), the EQ numbers
According to including audio amplifier layer EQ parameters, array layer EQ parameters and system layer EQ parameter;
So in step 30, digital signal processor performs in a pipeline fashion following steps:It is input into according to audio amplifier layer
Muting parameter performs a step 31;According to audio amplifier layer input gain step 32 of parameter;Joined according to audio amplifier layer input time delay
Step 33 of number;According to audio amplifier layer EQ step 37 of parameter;According to step 37 of array layer EQ parameters;According to system layer
Step 37 of EQ parameters.
Embodiment three
The present embodiment is with the difference of embodiment one:The DSP data that the present embodiment is included in input processing parameter
In, an at least DSP data are also comprising one and its audio amplifier layer DSP parameter species identical system layer DSP parameter, the system layer
DSP parameters are to be directed to each audio amplifier member of the active audio amplifier said system group and arrange, and the system group includes:One more
Individual active audio amplifier.
Claims (3)
1. a kind of active sound box control method, it is characterised in that:The active audio amplifier includes signal input unit, Digital Signal Processing
Device, microprocessor, multiple power amplifier units and multiple loudspeaker units, each power amplifier unit connects with the loudspeaker unit for matching
Connect;
The digital signal processor is provided with data memory module, the one group of input processing parameter that is stored with the data memory module and
Multigroup output processing parameter corresponding with each power amplifier unit respectively, per group of output processing parameter includes one or more DSP ginsengs
Number;
This group of input processing parameter includes multiple entity DSP data, and each entity DSP packets contain one with entity DSP
The corresponding audio amplifier layer DSP parameters of species of data, the audio amplifier layer DSP parameters are the DSP parameters arranged for the active audio amplifier;Often
Individual entity DSP data also include one with its audio amplifier layer DSP parameter species identical array layer DSP parameter, array layer DSP
Parameter is each audio amplifier member for the affiliated array group of the active audio amplifier and the DSP parameters that arrange, and the array group includes one
Or multiple active audio amplifiers;Each entity DSP data of the input processing parameter are also comprising one and its audio amplifier layer DSP parameter kind
Class identical system layer DSP parameter, the system layer DSP parameter is each audio amplifier member for the active audio amplifier said system group
And arrange, the system group includes one or more active audio amplifiers;Each audio amplifier member of same array group shares the array layer
The data of DSP parameters, certain array layer DSP parameters of some audio amplifier member are changed in array group, then in same array group
Remaining audio amplifier member corresponding array layer DSP parameters also can by synchronous vacations be identical numerical value;Each sound of same system group
Case member shares the data of the system layer DSP parameter, and certain system layer DSP parameter of some audio amplifier member is repaiied in system group
Change, then the correspondence system layer DSP parameters of remaining audio amplifier member in same system group also can be identical numerical value by synchronous vacations;
The method is comprised the following steps:
Step S10:The microprocessor is defeated to each DSP parameter and each group of this group of input processing parameter according to external control signal
Each DSP parameter for going out processing parameter is adjusted;
Step S20:The signal input unit receives the audio signal of audio amplifier outside input, and transmits to the Digital Signal Processing
Device;
Step S30:The digital signal processor performs in a pipeline fashion multiple signal processing operations steps, this group of input processing
Each DSP parameters one signal processing operations step of correspondence of parameter, each signal processing operations step is joined according to corresponding DSP
It is several that corresponding signal processing operations are carried out to audio signal;Audio signal after the process of step S30 is divided into and each work(
Put the corresponding multiple-channel output audio signal of unit;
Step S40:For per exports audio signal all the way, the digital signal processor is performed in a pipeline fashion at multiple signals
Reason operating procedure, the corresponding signal of each DSP parameter of one group of output processing parameter corresponding with exports audio signal all the way
Process operating procedure, each signal processing operations step according to corresponding DSP parameters to this all the way exports audio signal carry out phase
The signal processing operations answered;
Step S50:Each power amplifier unit receives the corresponding exports audio signal all the way through the process of step S40, and will correspondence
Exports audio signal all the way be amplified process after transmit to corresponding loudspeaker unit.
2. active sound box control method according to claim 1, it is characterised in that:
The input processing parameter includes input quiet data, input gain data, input time delay data, EQ data, wherein, it is defeated
Enter quiet containing the audio amplifier layer of packet input muting parameter, input gain packet containing audio amplifier layer input gain parameter, input time delay
Containing the audio amplifier layer of packet input time delay parameter, the EQ data include audio amplifier layer EQ parameters and array layer EQ parameters;
In step S30, the digital signal processor performs in a pipeline fashion following steps:It is input into according to audio amplifier layer
Muting parameter performs step S31:Silence switch process is carried out to audio signal according to the audio amplifier layer input muting parameter;Root
Step S32 is performed according to audio amplifier layer input gain parameter:Audio signal is increased according to the audio amplifier layer input gain parameter
Benefit is managed;Step S33 is performed according to audio amplifier layer input time delay parameter:Audio frequency is believed according to the audio amplifier layer input time delay parameter
Number carry out delay process;Step S37 is performed according to audio amplifier layer EQ parameters:Audio signal is entered according to the audio amplifier layer EQ parameters
Row EQ process;And step S37 is performed according to array layer EQ parameters:Audio signal is carried out according to array layer EQ parameters
EQ process.
3. active sound box control method according to claim 1, it is characterised in that:
The input processing parameter includes input quiet data, input gain data, input time delay data, EQ data, wherein, it is defeated
Enter quiet containing the audio amplifier layer of packet input muting parameter, input gain packet containing audio amplifier layer input gain parameter, input time delay
Containing the audio amplifier layer of packet input time delay parameter, the EQ data include audio amplifier layer EQ parameters, array layer EQ parameters and system layer EQ ginseng
Number;
In step S30, the digital signal processor performs in a pipeline fashion following steps:It is input into according to audio amplifier layer
Muting parameter performs step S31:Silence switch process is carried out to audio signal according to the audio amplifier layer input muting parameter;Root
Step S32 is performed according to audio amplifier layer input gain parameter:Audio signal is increased according to the audio amplifier layer input gain parameter
Benefit is managed;Step S33 is performed according to audio amplifier layer input time delay parameter:Audio frequency is believed according to the audio amplifier layer input time delay parameter
Number carry out delay process;Step S37 is performed according to audio amplifier layer EQ parameters:Audio signal is entered according to the audio amplifier layer EQ parameters
Row EQ process;Step S37 is performed according to array layer EQ parameters:Audio signal is carried out at EQ according to array layer EQ parameters
Reason;Step S37 is performed according to system layer EQ parameter:EQ process is carried out to audio signal according to the system layer EQ parameter.
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