Fourier-Analysis and FM-synthesis

[Scott Morgan]

>Is there anybody out there who has tried to immitate natural instruments by
>using Fourier-analysis??? I mean: Use a lot of sine-waves for one single
>sound????

I wrote a Macintosh program for the Prophet VS, "VS WaveWrangler" several
years ago. Part of its capability was a harmonic analysis/resynthesis
function for the oscillator waveforms. A DSP friend did the actual code for
this part. Anyway, you can also start an oscillator from scratch using
additive- up to 64 harmonics. The VS oscillators are such that you can
pretty much do realtime additive/resynthesis - takes about .5 sec to send
the data over midi.There is a info & screen dumps on our website:
www.imuse.com.

But without separate envs and phase control for each harmonic, you cannot
come close to imitating acoustic instruments, plus there are all kind of
non-harmonics elements present to acoustic intruments that would difficult
to re-produce w/ additive, not to mention formants, etc.




 _________ Scott Morgan __ Interval Music Systems ________
    interval at netcom.com    <http://www.imuse.com>