For adding new sources: Please add a line of note.xlsx undering the folder to show the license and where you download it; Please add a meaningful name; If you can write down the reason why do you pick it that would be great (note.xlsx);

44100 HZ sample rate; Single channel; The length under 1 minute

One single sound event or multiple no overlapping sound events; No overlapping sound event; Having the beginning and end of the sound event;

One sound texture; Without having the begininng and end of the sound event; Having the changing of sund events; The changing of sound repesents the changing of sound events;

One sound texture; Without having the begininng and end of the sound event; Without having the changing of sund events;