From AudioUnitParameters.h:

// Parameters for the AUSampler unit
CF_ENUM(AudioUnitParameterID) {
                // Global, dB, -90->12, 0
        kAUSamplerParam_Gain                            = 900,

                // Global, Semitones, -24->24, 0
        kAUSamplerParam_CoarseTuning                    = 901,

                // Global, Cents, -99->99, 0
        kAUSamplerParam_FineTuning                      = 902,

                // Global, -1.0->1.0, 0
        kAUSamplerParam_Pan                             = 903
};

> On Jun 3, 2016, at 1:31 AM, Brad Howes <[email protected]> wrote:
> 
> Hi,
> 
> I’m looking for a way to dynamically change the octave or transpose setting 
> for the AUSampler AudioUnit. Is this possible? If so, what are the magic 
> parameter constants? Thanks!
> 
> Brad
> 
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