Originally Posted by Thorham
Not to mention that the designers probably just meant for the audio system to not be too expensive and still sound good. All this Amiga specific sound (whatever that means) probably comes from the price/performance requirement.
I think the Amiga specific sound comes from the harmonics created as the output jumps from wavetable value to value.
A two value wavetable of -128 and +127 when output at 1000 values per second, for example, will look like a square wave which means there will be odd harmonics of the 500 Hz fundamental at 1500 Hz, 2500 Hz, etc.
This seems impossible. How can a sample at 1000 Hz produce frequencies above the Nyquist limit? The answer is the output is not a sample. It's a waveform.