Re: VoiceProcessingIO : intermittent startup difficulties
Re: VoiceProcessingIO : intermittent startup difficulties
- Subject: Re: VoiceProcessingIO : intermittent startup difficulties
- From: William Stewart <email@hidden>
- Date: Wed, 13 Oct 2010 13:54:59 -0700
Hi Zach
Can you file a bug report (bugreporter.apple.com) - we aren't aware of this problem. If you can attach some code that will help us get to the bottom of it.
Thanks
Bill
On Oct 13, 2010, at 6:37 AM, Zachary Kulis wrote:
> I am using the VoiceProcessingIO for recording, as it seems to boost the
> input gain on the microphone and deliver a higher SNR than the RemoteIO
> unit. I am also using the PlayAndRecord category and an AUGraph with a
> mixer connected.
>
> My problem is that occasionally, after starting the AU graph, my input
> callback is never called. The output (render) callback is called
> normally, but I never get a notification that recorded samples are
> ready! Also, when this issue occurs, a red flashing bar often appears at
> the top of the screen, and there is no way to dismiss it (with the
> exception of rebooting the device).
>
> If I disable the VoiceProcessingIO unit and use the RemoteIO unit
> instead, the issue does not occur -- my input callback is called
> normally. Also, I never observe the problem when using the simulator
> (VoiceIO or RemoteIO). This leads me to believe that the issue is not
> with my code.
>
> I was just wondering if anyone has ever run into this (or a similar)
> issue while using the VoiceProcessingIO unit with the PlayAndRecord
> category. I'm developing/testing with the iOS4.0 SDK and running my app
> on an iPod Touch 2G.
>
> Thanks,
>
> Zach
>
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