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Re: iPhone Audio Woes
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Re: iPhone Audio Woes


  • Subject: Re: iPhone Audio Woes
  • From: Timothy Larkin <email@hidden>
  • Date: Mon, 30 Mar 2009 17:31:27 -0400

I would be happy to share code. Perhaps you can be more specific about your interest.

I am adjusting the kHALOutputParam_Volume on the audio unit that gets returned for the subtype kAudioUnitSubType_RemoteIO. Specifically, I use

AudioUnitSetParameter(rioUnit, kHALOutputParam_Volume, kAudioUnitScope_Global, 0, level, 0)

Using the output scope, which I have also tried, has the same (non)result.

I did not enable metering on the multi-channel mixer. I'm reading microphone power from an audio queue object that is set up to do recording.

--

Timothy Larkin

Abstract Tools

Caroline, NY


On Mar 30, 2009, at 4:19 PM, Andrew Nalband wrote:

Hi Tim,

I'm thrilled to find someone else working on this.

Care to share your current audio code on something like pastie.org so I can have a look?

For what audio unit are you adjusting kHALOutputParam_Volume?  Have you set the scope and element (bus) properly?  See page 41 of the audio unit programming guide for an overview of scope and element.  

Have you enabled metering on the multichannel mixer?


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References: 
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 >Re: iPhone Audio Woes (From: Andrew Nalband <email@hidden>)

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