Re: kAudioDevicePropertyHogMode and NSSpeechSynthesizer...
Re: kAudioDevicePropertyHogMode and NSSpeechSynthesizer...
- Subject: Re: kAudioDevicePropertyHogMode and NSSpeechSynthesizer...
- From: "Paul Sanders" <email@hidden>
- Date: Fri, 4 Jun 2010 15:23:02 +0100
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> I can hear the voice begin to speak for just a split
second now, but
> then it gets cut off in the middle of the first word of
the sentence.
> If I add a little NSThread sleep after I play the
NSSound, I can hear a
> little more. If I increase the sleep to a
long enough interval, I can
> hear the whole thing. My guess is
that it has to do with returning to
> the runloop.
I know you have now moved away from this, for the moment
at least, but are you / were you autoreleasing your
NSSound object (or using GC)? If so, I think your problem might be this
(taken from the overview section of the NSSound documentation):
"You should retain NSSound objects before initiating playback
or make sure you have a strong reference to them in a garbage-collected
environment. Upon deallocation, a sound object stops playback of the sound (as
needed) so that it can free up the corresponding audio resources. If you want to
deallocate a sound object immediately after playback, assign a delegate and use
the sound:didFinishPlaying: method to deallocate it."
I suspect that what is happening is that your NSSound
object is being deallocated (or garbage collected) when you return to the
runloop and therefore stops playing at that point. Knowing that, a
solution should not be hard to find.
Regards,
Paul Sanders.
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