Apple

I can change the parameter on the output, but that changes the volume of everything right? I thought that you were supposed to change the volume on the inputs to control the volume of each channel?

Have you tried changing the parameter on the _Output scope? It seems to me that a mixer would always take the input as Unity and the actual attenuation would happen on the output.

_Mark

On Jul 13, 2012, at 11:39 AM, Bob Sabiston <email@hidden> wrote:

Hello again,

So, I am trying to fix my problem by lowering the volumes on my mixer inputs, using this:

OSStatus result = AudioUnitSetParameter (mixerUnit,
   kMultiChannelMixerParam_Volume,
   kAudioUnitScope_Input,
   inputBus,
   newGain,
   0
   );

But it seems that no matter what value I pass for newGain, the volume doesn't change. It seems to play at the loudest volume (unless I am running into the problem from my previous post).

Even if I set the gain to .01 it doesn't get any softer. Any ideas?

Thanks
Bob

References:
	>another volume question (From: Bob Sabiston <email@hidden>)
	>Re: another volume question (From: Mark Pauley <email@hidden>)