[L2Ork-dev] Purr Data & Audio Sample Rate

Linux ROUEN Normandie linux.rouen at free.fr
Wed Oct 14 16:48:17 EDT 2020


Hello to the Audio specialists,

I'm struggling since a while with an annoying Audio issue under Purr 
Data using e.g. [oggwrite~] / [oggread~] with their default settings.

Under GNU/Linux for Audio I'm using JACK2 with QJackCtl or Ubuntu Studio 
Control and JACK back-end = ALSA.
I record from an Audio source (synth, micro, line) with [oggwrite~] and 
then play it back with [oggread~].

As long as I'm using everywhere (Pd, Jack) the same Sample Rate, either 
44100 or 48000, it's all fine - no issue at all.
But if the Play SR changes (voluntary or not in Pd & Jack) vs the Record 
SR, then when playing my Audio song back is running either faster or slower!

I thought that the Audio SR had nothing to do with the playback speed 
but only, among other things, with the sound quality.

What is wrong in my thinking? Any ideas?

Thank you. Best,
Joseph Gastelais



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