Wide-range voice frequency treating system based on adaptive gain control

The invention discloses a wide-range voice frequency treating system based on adaptive gain control. The wide-range voice frequency treating system based on adaptive gain control mainly consists of a signal acquiring circuit, a signal debugging circuit and a signal processing circuit which are connected to the signal acquiring circuit, and an adaptive gain control circuit which is simultaneously connected to the signal processing circuit and the signal debugging circuit. The wide-range voice frequency treating system based on adaptive gain control is characterized in that the a voice frequency processing circuit is further arranged at the output end of the adaptive gain control circuit, wherein the voice frequency processing circuit consists of a voice frequency processing chip K, a capacitor C7, and the like, wherein the positive electrode of the capacitor C7 is connected with a GAIN2 tube pin of the voice frequency processing chip K after passing through a resistor R13, and the negative electrode of the capacitor C7 is connected with a GAIN1 tube pin of the voice frequency treating chip K after passing through the capacitor C8. The wide-range voice frequency treating system based on adaptive gain control can be used for processing the received large and small voice frequency signals, so that the voice frequency processing range is greatly widened; moreover, the background noises are filtered when the small signals are processed, so that the listening effects are not affected as the background noises are prevented from being amplified during small signal gain amplification.