CompuServe Messages

You're on the right track. Each "note" does have a specific frequency, if it's played on the "instrument" of a pure sine wave. Real-world instruments rarely have that pure 'S' shape. Instead, their waveforms are very, very complicated. One way to think of them is the sum of a large number of sine waves of different frequencies, frequencies that change in amplitude and frequency over time. You might want to check the library for books on electronic music synthesis. They often include a deeper discussion of these issues, as well as a few charts and graphs and example waveforms. Another more interesting way to tackle this problem is to use an Amiga sound sampler and sound waveform editing software. There are several packages available at varying prices. With this, you could sample the sound of the instruments you'd like to approximate, then examine what they look like in the waveform editor. It might be a lot easier for you to load sampled sounds and play them in sequence, than typing in DATA statements for sound approximations. I know it's possible to load and play sampled sounds from within AmigaBASIC; once upon a time I wrote a library for the FutureSound digitizer that let you play sounds from within AmigaBASIC. It might still be in the library here.