CN214381253U - Multifunctional sound box with enhanced singing effect - Google Patents

Abstract

The utility model discloses a multi-functional audio amplifier with reinforcing effect of singing is provided with the effect circuit of singing of playing in this audio amplifier, including a microprocessor and peripheral circuit in the effect circuit of singing of playing, microprocessor passes through analog-to-digital/digital-to-analog converter and links to each other with the audio input end, and microprocessor still links to each other with the digital signal processing chip that is used for carrying on audio frequency processing. The utility model discloses the beneficial technological effect who possesses is: the requirement of different occasions of user to audio equipment has been satisfied, is provided with the reinforcing function circuit of singing in the audio amplifier, and audio effect processing ability is strong, and audio circuit has powerful circuit input function and audio processing ability, can carry out analog/digital live broadcast and bluetooth accompaniment, realizes a multi-functional effect of a tractor.

Description

Multifunctional sound box with enhanced singing effect

Technical Field

The utility model relates to a multifunctional sound box especially relates to a multifunctional sound box with reinforcing effect of singing.

Background

Along with the improvement of living standard of people, the problem of single function of the sound box in the prior art is more prominent, the audio-visual experience requirement of a sound box user which is gradually increased can not be met, particularly, the singing effect cannot be enhanced, and the problem needs to be improved urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multi-functional audio amplifier with effect is sung in reinforcing, solves the shortcoming regret that prior art exists.

The utility model discloses a following technical scheme realizes:

a multifunctional sound box with enhanced singing effect is characterized in that a singing effect circuit is arranged in the sound box, the singing effect circuit comprises a microprocessor and a peripheral circuit thereof, the microprocessor is connected with an audio input end through an analog-to-digital/digital-to-analog converter, and the microprocessor is also connected with a digital signal processing chip for audio processing.

Further, the audio input is connected to a microphone or musical instrument.

Furthermore, an EQ equalization amplifier is arranged on the audio input end, the model of the analog-to-digital/digital-to-analog converter is CS4270, and the model of the digital signal processing chip is AP 3500.

Further, the singing effect circuit further comprises a recording/power amplifier output module, a power supply/charging module, an audio processing module, a digital/analog live broadcast circuit module and an earphone output module, wherein the modules are electrically connected with one another, and the singing effect circuit comprises:

the recording/power amplifier output module is used for amplifying audio signal input, processing audio and outputting power amplifier;

the power supply/charging module is used for supplying power to the circuit and charging the battery;

the audio processing module is used for carrying out resampling, gain adjustment, sound mixing and sound effect processing on an input signal;

the digital/analog live broadcast circuit module is used for providing a USB OTG interface to realize data interaction of the master-slave equipment.

The utility model discloses the beneficial technological effect who possesses is: the requirement of different occasions of user to audio equipment has been satisfied, is provided with the reinforcing function circuit of singing in the audio amplifier, and audio effect processing ability is strong, and audio circuit has powerful circuit input function and audio processing ability, can carry out analog/digital live broadcast and bluetooth accompaniment, realizes a multi-functional effect of a tractor.

Drawings

Fig. 1 is a schematic block circuit diagram of the present invention.

FIG. 2 is a schematic block diagram of the circuit of the MCU, DSP and power amplifier.

Fig. 3 is a schematic block diagram of a circuit of the OTG chip and the USB interface.

Detailed Description

The following description of the embodiments will help the public to understand the present invention, but the specific embodiments given by the applicant should not be considered as limiting the technical solution of the present invention, and any changes in the definition of the components or technical features and/or in the form of the overall structure rather than substantial changes should be considered as the protection scope defined by the technical solution of the present invention.

As shown in fig. 1, the multifunctional sound box with enhanced singing effect is provided with a singing effect circuit, the singing effect circuit includes a microprocessor and its peripheral circuits, the microprocessor is connected with an audio input end through an analog-to-digital/digital-to-analog converter, the microprocessor is further connected with a digital signal processing chip for audio processing, the audio input end is connected with a microphone or a musical instrument, in this embodiment, the musical instrument is a guitar, but not limited to the selection of the musical instrument in other embodiments, the audio input end is provided with an EQ equalization amplifier, the analog-to-digital/digital-to-analog converter is CS4270, and the digital signal processing chip is AP 3500.

The working principle of the utility model is as follows:

when the audio input is a microphone: the microphone is subjected to EQ equalization amplification by a pre-stage processing and then input to an analog-digital/digital-analog converter CS4270(24BIT,192KHZ) A/D D/A for decoding, the analog-digital/digital-analog converter CS4270 and a DSP AP3500, an MCU is transmitted through I2C serial data, a digital signal processing chip DSP (AP3500) performs digital signal processing on the reverberation effect of the microphone, a microprocessor MCU receives a voltage variable instruction of a reverberation potentiometer and transmits the voltage variable instruction to the digital signal processing chip DSP through an I2C data bus, the digital signal processing chip DSP transmits the voltage variable instruction to a D/A decoder through an I2C data bus, and the digital reverberation effect is output to a post-stage circuit. The microprocessor MCU is mutually connected with the analog-digital/digital-analog converter CS4270, plays the role of an electronic filter, can eliminate audio signals of a certain frequency band and realizes the function of an electronic switch; when the microphone is plugged, the control pin of the microprocessor MCU receives a high potential to start the decoder, so that the noise can be effectively suppressed.

The I2C bus is a simple, bi-directional two-wire synchronous serial bus developed by Philips. It requires only two wires to transfer information between devices connected to the bus. I2C combines the advantages of SPI and UART. Multiple slave devices can be connected to a single master device (e.g., SPI) during use of I2C, and multiple masters can be made to control a single or multiple slave devices, which is useful when multiple microcontrollers are desired to record data to a single memory card or to display text to a single LCD, as in UART communications, I2C uses only two lines to transfer data between devices:

when the audio input is a musical instrument (guitar): the guitar is subjected to EQ balanced amplification by the preceding stage processing and then is input into an analog-digital/digital-analog converter CS4270(24BIT,192KHZ), the analog-digital/digital-analog converter CS4270 and a digital signal processing chip DSP (AP3500), serial data transmission is carried out between a microprocessor MCU (microprogrammed control Unit) through I2C, the DSP (AP3500) carries out digital signal processing of chorus/reverberation effect, the MCU microprocessor receives a voltage variable instruction of a reverberation potentiometer and transmits the voltage variable instruction to the digital signal processing chip DSP through an I2C data bus, the digital signal processing chip DSP transmits the voltage variable instruction to the analog-digital/digital-analog converter CS4270 through an I2C data bus, and the digital chorus/reverberation effect is obtained and then is output to a subsequent stage circuit. The microprocessor MCU is in data connection with the analog-digital/digital-analog converter CS4270, has the function of an electronic filter, can eliminate audio signals of a certain frequency band, plays the role of an electronic switch, and can effectively suppress noise when a guitar is plugged, a control pin of the microprocessor MCU receives high potential to start a decoder. The pre-stage processed EQ is equalized and amplified and input to an audio processing chip (the model of the chip is ADAU1701) in an audio processing module, the audio processing chip is transmitted through an internal A/D D/A decoder (namely an analog-digital/digital-analog converter CS4270) and a digital processing chip DSP, and a microprocessor MCU is transmitted through an I2C serial data bus, so that EQ equalization, amplitude limiting, electronic filtering and high/low frequency division are realized, and the EQ equalization, amplitude limiting, electronic filtering and high/low frequency division are output to a power amplifier to push a high-low sound loudspeaker.

Further improvements can be made on the basis of the above embodiments: the singing effect circuit also comprises a recording/power amplifier output module, a power supply/charging module, an audio processing module, a digital/analog live broadcast circuit module and an earphone output module, wherein the modules are electrically connected with one another, and the singing effect circuit comprises: the recording/power amplifier output module is used for amplifying the audio signal input, processing the audio and outputting the power amplifier; the power supply/charging module is used for supplying power to the circuit and charging the battery; the audio processing module is used for carrying out resampling, gain adjustment, sound mixing and sound effect processing on an input signal; the digital/analog live broadcast circuit module is used for providing a USB OTG interface to realize data interaction of the master-slave equipment.

The utility model discloses satisfied the different occasions of user and to the requirement of sound equipment, be provided with the reinforcing bullet in the audio amplifier and sing functional circuit, audio effect processing capacity is strong, and audio circuit has powerful circuit input function and audio frequency processing capacity, can carry out analog/digital live broadcast and bluetooth accompaniment, realizes a tractor serves several functions' effect. Of course, the present invention can have other various embodiments, and those skilled in the art can make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the appended claims.

Claims (4)

1. A multifunctional sound box with enhanced singing effect is characterized in that a singing effect circuit is arranged in the sound box, the singing effect circuit comprises a microprocessor and a peripheral circuit thereof, the microprocessor is connected with an audio input end through an analog-to-digital/digital-to-analog converter, and the microprocessor is also connected with a digital signal processing chip for audio processing.

2. The multi-function speaker with enhanced singing effect as claimed in claim 1, wherein said audio input is connected to a microphone or musical instrument.

3. The multifunctional sound box with the effect of enhancing singing according to claim 1 or 2, wherein an EQ equalization amplifier is disposed on the audio input end, the analog-to-digital/digital-to-analog converter is of a type CS4270, and the digital signal processing chip is of a type AP 3500.

4. The multifunctional sound box with the enhanced playing and singing effect according to claim 1 or 2, wherein the playing and singing effect circuit further comprises a recording/power amplification output module, a power supply/charging module, an audio processing module, a digital/analog live broadcast circuit module and an earphone output module, which are electrically connected, wherein:

the recording/power amplifier output module is used for amplifying audio signal input, processing audio and outputting power amplifier;

the power supply/charging module is used for supplying power to the circuit and charging the battery;

the audio processing module is used for carrying out resampling, gain adjustment, sound mixing and sound effect processing on an input signal;

the digital/analog live broadcast circuit module is used for providing a USB OTG interface to realize data interaction of the master-slave equipment.

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