I'm glad to hear that you were able to get it to work by
resampling. It's surprising, but Mac OS 9 will support
any sample rate (and resample in software at the OS level)
but OS X requires programs to output sample rates that the
sound card supports.
For the past few months we've been spending 90% of our effort on
Audacity 1.1, which can do automatic resampling. The beta version
we've released so far is unfinished and not stable, but you can see
that we've added a lot of the missing features in Audacity 1.0
already, such as this. When this version is finished, it
should always "do the right thing" regarding sample rates.
Mark Lipawen wrote:
> On Sat, 22 Jun 2002, Dominic Mazzoni wrote:
>>The one other thing to try is to make sure you're using a standard
>>sample rate, like 44100. Mac OS X doesn't seem to support automatic
>>resampling, so it may refuse to play files at sample rates it doesn't
> Thanks for the reply. This turned out to be the problem with the OS X
> version. The file I had imported was 32 kHz, which doesn't seem to be
> among the default project presets. Based on your suggestion, I converted
> the file to 44.1 kHz with QT Pro before importing, and then it played
> from the timeline fine.
> The OS 9 version plays back 32 kHz files directly, and I find it hard to
> believe that 32 kHz is non-standard, considering that it's also the sample
> rate used by more than a few consumer DV camcorders for their audio
> recording. I'm trying to use Audacity in tandem with the OS X version of
> iMovie to do some basic editing. If iMovie can support 32 kHz audio
> directly, I'm surprised that the OS X version of Audacity has trouble with
> At this point, the desire to avoid booting into OS 9 is stronger than the
> desire to avoid an intermediate step with QT Pro, so I guess I can live
> with this workaround for now. :-) But please consider adding 32000 to the
> default sample rates, or at least a checkbox in the Import dialog that
> gives the user the opportunity to convert to a default rate during the
> import. Isn't sample rate conversion what people turn to audio programs
> for? Not everyone forks out the dough for QT Pro.
>>>I just downloaded both the OS 9 and OS X versions of 1.0.0. The OS 9
>>>version works as advertised, but I can't get the OS X version to do
>>>something basic: play sound from the timeline. This is the error message
>>>I get (when I click the play button or hit the spacebar):
>>>Error opening audio device.
>>>(Change the device in the Preferences dialog.)
>>>I don't have any special audio hardware on this machine, so my only
>>>option (in both the Audacity prefs and OS X System prefs) is the built-in
>>>audio controller. I'm running both the OS 9 and OS X versions on the same
>>>machine, just on different partitions. No problems at all with the OS 9
>>>version with the exact same hardware.
>>>Quicksilver G4 tower
>>>OS X 10.1.5
>>>No USB/FireWire devices attached except the Apple Pro Keyboard
>>>What am I doing wrong?