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Re: [sc-users] Re: How to fix pulsating distortion



Problem solved.

I set inDevice and outDevice to my soundcard ASIO ("ASIO : Creative SBZ Series ASIO") and rebooted the server, and the sound is clean. I guess it had to do with MME after all.

Thanks for your help!

-Nathan


On Tuesday, December 20, 2016 5:52 PM, ddw_music <jamshark70@xxxxxx> wrote:


On December 21, 2016 01:30:45 tsunavesti evandrescu <balticelegy@xxxxxxxxx>
wrote:

> Yes, the clean file was created with s.record, and then imported into
> Audacity. It also sounds clean in VLC media player.

Ok, that's good, that eliminates a whole class of possible bugs.

> To get the "dirty" file that I uploaded to soundcloud, I executed
> {SinOsc.ar}.play in SC, then recorded the audio in Audacity with the "What
> U Hear (Sound Blaster Z)" option ()

So scsynth is generating a correct signal internally, and it's getting
corrupted when it leaves scsynth via the PortAudio layer -- or possibly in
the MME layer (I don't know where exactly Audacity's "what you hear" option
is tapping into the signal).

Unfortunately my knowledge of SC/Windows usage of PortAudio is ... nil.

One other test would be to try a different driver framework (e.g. ASIO). If
the signal is bad in all drivers, it would point to PortAudio as the cause.
If it's bad in MME but fine elsewhere, then it's the particular interaction
between scsynth and MME (which also isn't happening on everybody's machine,
so it's hard to troubleshoot -- I have a student using SC 3.8 in Windows, no
similar problem :\ ).

hjh



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