Realization method and realization system for automatic gain control
A technology of automatic gain control and realization method, applied in the direction of gain control, amplification control, telephone communication, etc., can solve the problems of difficulty in wide application, clutter interference, and high price, and achieves improved versatility, low implementation cost, and reliable performance. Effect
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[0026] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0027] First briefly explain the starting point of the technical solution of the present invention: with the appearance of MIDI music files, in order to solve the problem that the volume output is quite different when different playback devices play MIDI files, the audio signal processing system in the prior art adopts audio Dynamic range control module. The working principle of the audio dynamic range control module is similar to the process of automatic gain control, specifically: when the input signal amplitude of the module is less than the set threshold value, the module will output without attenuation; when the input signal amplitude When it is greater than the set threshold value, the module attenuates the gain output. That is, when the input signal reaches 0dB (that is, the full scale value), the si...
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