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Re: kStereoMixerParam_PreAveragePower

Yes. The audio is going through the mixer and is put into a ring buffer. From there it is encoded and saved to a file. All of the audio comes through mixed as expected.

The mixer is in an AUGraph. I get the AudioUnit for the mixer node with:

AUGraphGetNodeInfo(mVOGraph, mixerNode, NULL, NULL, NULL, &mixerUnit);

Dominic Feira / Code Monkey / Ambrosia Software, Inc.

On Feb 17, 2005, at 3:05 PM, email@hidden wrote:

Dominic, when you are getting the parameter value are you currently
rendering and
supplying input sample frames which are non-zero? The parameter value is meant
to give a measurement on the power of the input you're giving to the mixer.

Chris Rogers
Core Audio
Apple Computer

Hello. I am trying to get kStereoMixerParam_PreAveragePower from a
stereo mixer.
I'm doing the following:


mLeftLevel = 0.0;
error = AudioUnitGetParameter(mixerUnit,
kStereoMixerParam_PreAveragePower + 0,
kAudioUnitScope_Input,
0,
&mLeftLevel);

Every time this runs I mLeftLevel comes back as -120.0.
AudioUnitGetParameter isn't returning an error. Any idea? Perhaps
I don't understand something.

Dominic Feira / Code Monkey / Ambrosia Software, Inc.


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