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 comprises five channels, split into two Audio Processing Units (APUs). The first APU encompasses two general-purpose pulse channels with four duty cycles. The second APU includes a triangle wave generator, an LFSR-based noise generator, and a 1-bit Delta Modulation-encoded Pulse Code Modulation (DPCM) channel.