Help combining detuned saw objects?
I'm trying to write a "supersaw" jp-8000 style synth in maxmsp.
All I'm doing is adding together 16 saw objects each that are detuned differently (by sawnumber*detuneamount) and then dividing the output by 16 to keep the volume down. This is placed into a patcher and played using poly.
The problem is, when I do this I get a lot of flanging... I'm not sure why but I think it has to do with each oscillator starting at a slightly different time? Anyone have any idea how I can fix this? Or is there some other kind of spacing I need between the oscillators? I tried making the same patch in Reaktor (with the same detune amounts) and didn't get any of the flanging effects, so I'm confused. Thanks! See text code below, also i made a screenshot: http://www.kupex.com/supersawattempt.jpg
Hi jinxpx,
I do not understand why you detune each oscillator with the same offset from the previous oscillator to the next one (as I understand from the * 1. , * 2. , * 3... series.). It's hard to be sure without knowing what sort of values are coming into the detune inlet, but I suspect you'd get better results by using random values in a specific range rather than this series.
Also, I'd use multiplication instead of addition, so the detuning is relative to frequency. See modified patcher below.
Hope this helps.
Roald Baudoux
www.roaldbaudoux.org
without looking at the patch i can tell that flanging is the exspected behaviour.
phase offsets will not make a difference here, but the tuning can.
on one had i would use relative frequency offsets (think per cent) and on the
other hand each of the oscillator frequencies need a slight modulation;
try triangular LFO and/or little random instabilities.
their job will mainly be to modulate the phases and not the pitches, if oyu
know what i mean.
-110