Cannot change sample rate on 10.6 (Snow Leopard)


#1

I cannot change sample rate on JUCE demo and our JUCE application.
This behaviour seems to occur on only Mac OS X 10.6(Snow Leopard).

  1. Open Built-in Output. (sample rate = 44.1kHz)
  2. Change sample rate to 48kHz.
  3. Message “Couldn’t change sample rate/buffer size” is shown,
    and device is closed.
    (But sample rate shown in Apple’s “Audio MIDI Setup” is 48kHz.)
  4. Reopen Built-in Output.
  5. Now sample rate is 48kHz.

#2

Yes, I’ve noticed this myself on 10.6, but can’t figure out what it is that they’ve changed. The device seems to be behaving very strangely when you tell it to change rate - I’ll need to do some more experimentation to try to find a workaround.


#3

FYI I’ve checked in some changes that should fix this (hope it doesn’t break any other devices though!)

Seems to be a bug in the drivers - you tell them to change rate, which they do correctly, but they carry on reporting their old rate.


#4

I had this error too, took the tip and it was fixed. Now, after updating to 10.6.2 from 10.6.1, the little devil is back sigh… Any news?

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#5

Ooops, terribly sorry… It appeared to be a problem with Mac OS X. I noticed that I didn’t get any clicks when changing volume, and preview of audio files was also silent. I did some changes of which audio interface I am using, and that seemed to cure everything. It seems Apple is slacking off a bit on their previously rock-steady handling of everything… Alas.

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