[PD] very compressed chip sounds

[Thierry Coutier]

Hello list,

this one will quickly get on your nerves...


Thierry

2011/10/11 tim vets <timvets at gmail.com>

> 7 objects arpeggiator
> note that if you click the same Hradio box several times you also get
> variations.
> gr,
> Tim
>
> 2011/10/11 Mathieu Bouchard <matju at artengine.ca>
>
>> Le 2011-10-12 à 01:32:00, hardoff goes bananas a écrit :
>>
>>
>>  no idea what causes the transpose/chord shift in this patch, but if you
>>> leave it for a while, it inevitably does happen.
>>>
>>
>> You are greatly amplifying error accumulation coming from [phasor~]. With
>> a samplerate of exactly 44100 and a frequency of exactly 2, an ideal
>> [phasor~] would increase by an amount of 2/44100 at each sample, leading to
>> a new 0 at every 22050. The truth is a bit different.
>>
>> If you do it with regular pd floats (float32), the amount 2/44100 gets
>> computed as 12466118/pow(2,15+23) instead, because that's the closest
>> fraction that this format can express.
>>
>> For reasons of error accumulation, [phasor~] uses a «double» (float64) for
>> storing the phase, but then it stores 1/44100 as a float, an computes
>> 2*(1/44100) as a float too, therefore a [phasor~ 2] doesn't have the exact
>> frequency of 2.
>>
>> BTW, have you tried [phasor~ 2.01] and other things like that ? At least
>> on my computer, it's more interesting than [phasor~ 2].
>>
>>
>>  ______________________________**______________________________**
>> __________
>> | Mathieu BOUCHARD ----- téléphone : +1.514.383.3801 ----- Montréal, QC
>>
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>
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