Peter Nyboer

i'm trying to create a triangle waveform from a phasor~ - like cycle~ (i have a ramp buffer that cycle~ refers to). I won't get into why I'm using cycle~ instead of phasor~...BUT, I'm getting a strange discontinuity that I can't figure out. This patch demonstrates the problem (XP). Why does does the cycle~-based version behave differently????

i'm trying to create a triangle waveform from a phasor~ - like cycle~ (i have a ramp buffer that cycle~ refers to).  I won't get into why I'm using cycle~ instead of phasor~...BUT, I'm getting a strange discontinuity that I can't figure out.  This patch demonstrates the problem (XP).  Why does does the cycle~-based version behave differently????

triangle-wave-problems

just checking, but is there a reason that the triangle~ and tri~ objects

just checking, but is there a reason that the triangle~ and tri~ objects
don't work for you?


i'll be damned! I didn't know triangle~ existed. Thanks for that. tri~ doesn't "work" for me because it's anti-aliased. I'm still curious why the above doesn't work right, though.

i'll be damned!  I didn't know triangle~ existed.  Thanks for that.  tri~ doesn't "work" for me because it's anti-aliased.  I'm still curious why the above doesn't work right, though.


> BUT, I'm getting a strange discontinuity that I can't figure out.

>> The cycle~ object is an interpolating oscillator that reads 

>> waveform, using a wavetable of 512 samples. Its default waveform 

>> wave. It can use other waveforms by accessing samples from a 

>> sample in the wavetable source (the buffer~) is used for 

That last sentence is, I think, what's killing you. Try defining that 

Peter Castine +---> Litter Power & Litter Bundle for Jitter

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On 28-Apr-2006, at 21:39, pnyboer wrote:
> BUT, I'm getting a strange discontinuity that I can't figure out.

>> The cycle~ object is an interpolating oscillator that reads  
>> repeatedly through one cycle of a
>> waveform, using a wavetable of 512 samples. Its default waveform  
>> is one cycle of a cosine
>> wave. It can use other waveforms by accessing samples from a  
>> buffer~ object. The 513th
>> sample in the wavetable source (the buffer~) is used for  
>> interpolation beyond the 512th
>> sample.

That last sentence is, I think, what's killing you. Try defining that  
513th sample at loadbang time.

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hmmm...ok, that 513th doesn't really do it either. here's a patch that demonstrates the problem I'm having. Theoretically, the cycle~ phasr should be the same as phasor~. Practically, it's not:

hmmm...ok, that 513th doesn't really do it either.  here's a patch that demonstrates the problem I'm having.  Theoretically, the cycle~ phasr should be the same as phasor~.  Practically, it's not:

At 44.1kHz 11.61 milliseconds makes a buffer~ with 512 samples. You

At 44.1kHz 11.61 milliseconds makes a buffer~ with 512 samples.  You
want a buffer~ with 513 samples.

hmmm...right. but I still the clicks if I change the buffer size to 11.63265. Did changing this fix the problem for you, or is it just an observation of me being absent minded? :)

hmmm...right.  but I still the clicks if I change the buffer size to  11.63265.  Did changing this fix the problem for you, or is it just an observation of me being absent minded? :)

triangle wave problems