Audio frequency processing system and method

[0012] As shown in FIG. 1 , it is a structural diagram of the audio processing system in this embodiment. The audio processing system 1 includes a central processing unit 10, a storage unit 11, a decoding unit 12, a digital / analog converter 13, a volume control unit 14, an amplifier 15, an audio output device 16 and a volume management unit 17. The storage unit 11 stores a plurality of audio files, decoding programs and volume management programs. The central processing unit 10 controls the operation of each unit in the audio processing system 1 . The decoding unit 12 reads an audio file, decodes the audio file to generate a digital audio signal, and then transmits the digital audio signal to the D / A converter 13 . The D / A converter 13 converts the digital audio signal into an analog audio signal, and transmits the analog audio signal to the amplifier 15 . The volume control unit 14 sets a current volume control value. The amplifier 15 amplifies the analog audio signal