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Arrsyx / soundflower

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Changing the sample rate affects Soundflower's frequency response #106

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago 
1. Select a sample rate of 44.1 kHz or 48 kHz in Audio MIDI Setup
2. Listen to music
3. Select a sample rate of 88.2 kHz or 96 kHz
4. Listen to more music

The output has a noticeably different frequency response with the higher 
sampling rates. (much more low end and much less midrange)

I'm using the Soundflower 1.5.2 on OS X Lion 10.7. I'm actually using it with 
Audio Hijack Pro, as it doesn't support Lion yet with its own system audio 
capture, so this *might* be an Audio Hijack Pro problem, but it doesn't seem 
like it to me.

Either way, it seems rather odd to me that it'd have anything but a truly 100% 
neutral frequency response, since as far as I'm aware Soundflower doesn't 
actually do any processing to the audio…

Original issue reported on code.google.com by cybr...@gmail.com on 23 Jul 2011 at 2:24

GoogleCodeExporter commented 8 years ago 
audio highjack has been updated. do you still have this problem?

Original comment by shanet...@gmail.com on 26 Jul 2011 at 4:12

GoogleCodeExporter commented 8 years ago 
Soundflower just copies samples.  It does not do any sample rate conversion or 
PLL compensation or anything else.  So if the two apps are not synchronized at 
exactly the same sample rate then there could be discrepancies in the output.  
Soundflower won't try to compensate for it.  This is currently the domain of 
the users and other apps.

There is a feature request to add this functionality @ 
https://github.com/tap/Soundflower/issues/5

Original comment by t...@electrotap.com on 1 Feb 2012 at 4:20