this is not the source code, but it is very classic audio circuits. There are also plans waveform. It should be helpful.

Packet : 7941930063552rd.rar filelist
20个音频电路\200312212250150.gif
20个音频电路\200312212251140.gif
20个音频电路\200312212252420.gif
20个音频电路\200312212253390.gif
20个音频电路\200312212254230.gif
20个音频电路\200312212255310.gif
20个音频电路\200312212256330.gif
20个音频电路\200312212257430.gif
20个音频电路\200312212258450.gif
20个音频电路\200312212300000.gif
20个音频电路\200312212300420.gif
20个音频电路\200312212302070.gif
20个音频电路\200312212303200.gif
20个音频电路\200312212304420.gif
20个音频电路\200312212307400.gif
20个音频电路\200312212308380.gif
20个音频电路\200312212310150.gif
20个音频电路\200312212313030.jpg
20个音频电路\200312212314400.gif
20个音频电路\200312212316080.gif
20个音频电路\200312212316420.gif
20个音频电路\200312212318180.gif
20个音频电路\200312212319490.gif
20个音频电路\200312212320240.gif
20个音频电路\Thumbs.db
20个音频电路

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