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Re: kStereoMixerParam_PreAveragePower

Subject: Re: kStereoMixerParam_PreAveragePower
From: Chris Rogers <email@hidden>
Date: Wed, 16 Feb 2005 13:03:03 -0800
Delivered-to: email@hidden
Delivered-to: email@hidden

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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References:
	>kStereoMixerParam_PreAveragePower (From: Dominic Feira <email@hidden>)

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