The Ricoh 2A03's sound hardware has 5 channels, separated into two APUs (Audio Processing Units). The first APU contains two general purpose pulse channels with 4 duty cycles, and the second APU contains a triangle wave generator, an LFSR-based Noise generator, and a 1-bit Delta modulation-encoded PCM (DPCM) channel.
The Ricoh 2A03's sound hardware has five channels, split into two Audio Processing Units (APUs). Each APU includes pulse channels with duty cycles. The second APU features additional components such as a triangle wave generator, an LFSR-based noise generator, and a DPCM channel.