1-6 Audio

In the N64 audio process, the CPU transfers the data from the N64 Game Pak ROM to RDRAM. Then the CPU creates the audio command list (ABI command list) in RDRAM by using the synthesizer driver.

Next, the RSP performs the waveform synthesis process to transform the data into the 16-bit data of the L/R stereo by using the audio microcode. Then the RSP transfers the data from the audio buffer to the AI (the Audio Interface) in RDRAM.

The AI transfers the accepted digital data to the audio DAC and it is output as sound.

Figure 1-6-1 N64 Audio Process