----- Original Message ----- From: "Michal Seta" mis@music.mcgill.ca To: nlhommet@netcourrier.com Sent: Sunday, August 12, 2001 6:21 AM Subject: Re: [PD] can one osc~ read several partials?
On 8/11/01 12:47 PM, "nlhommet@netcourrier.com" nlhommet@netcourrier.com wrote:
Another question: Michal, in your samples the triangle and square are
between
0 and 1. To use them as sound oscillators (like osc~), i think it would
be
better to get a signal between -1 and 1, ie for a triangle waveform,
something
like 0 1 0 -1 0 . Am i right ?
Hehe. You're right...
I've never even looked at the square (never used it) and the triangle is mainly useful for "windowing" stuff... This raises an interesting point, though... Can you actually hear the difference? Can anyone? I've never made such an experiment but it could be interesting to find out.
You could generate the tables programmatically, I guess... Anyone got something like that ready?
/MiS
"To be is to do" - Socrates "To do is to be" - Sartre "Do be do be do" - Sinatra "Just do it!" - NIKE "It" - Stephen King
Another question: Michal, in your samples the triangle and square are
between
0 and 1. To use them as sound oscillators (like osc~), i think it
would
be
better to get a signal between -1 and 1, ie for a triangle waveform,
something
like 0 1 0 -1 0 . Am i right ?
Hehe. You're right...
I've never even looked at the square (never used it) and the triangle is mainly useful for "windowing" stuff... This raises an interesting
point,
though... Can you actually hear the difference? Can anyone? I've never made such an experiment but it could be interesting to find out.
I'm not sure, but I think there's no real difference but a different amplitude (volume) or amplitude of the partials. I think a comparison of a time-frequency representation of the two waveforms could give a 'scientific' answer. May be you could use pd to make it (he..I think i will post something about this later)
You could generate the tables programmatically, I guess... Anyone got something like that ready?
Yes, if someone get that, I'd be interested too.
/MiS
I've never even looked at the square (never used it) and the triangle is mainly useful for "windowing" stuff... This raises an interesting
point,
though... Can you actually hear the difference? Can anyone? I've never made such an experiment but it could be interesting to find out.
I'm not sure, but I think there's no real difference but a different amplitude (volume) or amplitude of the partials. I think a comparison of a time-frequency representation of the two waveforms could give a 'scientific'
??? what is this ? am i completely misled, or is the only difference between the discussed waveforms a scaling factor plus a bias ? (good signals (-1..+1) * 0.5 + 0.5) if so, what do you wnat to hear apart from the amplitude-difference ? maybe the soundcard will playback the 2 waveforms differently, because normally they can't do well with biases, but as long as you do not hear 0Hz i do not see a chance to make any differences...
mfg.csda.dt IOhannes
-
Johannes M Zmoelnig -
Nicolas Lhommet