[PD] up-down saw-wave

cyrille henry cyrille.henry at la-kitchen.fr
Sun Nov 19 14:20:07 CET 2006



Roman Haefeli a écrit :
> On Sun, 2006-11-19 at 12:27 +0100, cyrille henry wrote:
>> hard off a écrit :
>>> does anybody know how to make an up-down saw-wave ?
>> a triangle oscillator?
>>> phasor~ just ramps up and then goes straight back to 0, but i want
>>> something that ramps up then back down again.
>>>
>>> i know it's possible to use a [metro] and [line~] based solution, but
>>> that falls apart at high frequencies.  is there a way to do this in
>>> the signal domain?
>> phasor~
>> |
>> -~ 0.5
>> |
>> abs~
> 
> [abs~] is part of zexy. if you need a solution only with internals, see
> frank's solution.
well, abs~ is now part of zexy abstraction. it's made with expr~.
all this equation can be made with expr~.

but using a table should be faster.

cyrille

> 
>> |
>> -~ 0.25
>> |
>> *~ 4
>>
>> cyrille
>>
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