Mark,
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.
Cheers,
Dominic
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
>>support.
>
>
> 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
> it.
>
> 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.
>
> Mark
>
>
>>>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.
>>>
>>>My setup:
>>>Quicksilver G4 tower
>>>OS X 10.1.5
>>>QT 5.0.2
>>>640MB RAM
>>>No USB/FireWire devices attached except the Apple Pro Keyboard
>>>
>>>What am I doing wrong?
>>>
>>>Mark
>>
>
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