Re: Setting the quality of AUTimePitch unit
Re: Setting the quality of AUTimePitch unit
- Subject: Re: Setting the quality of AUTimePitch unit
- From: William Stewart <email@hidden>
- Date: Tue, 25 Oct 2005 11:33:28 -0700
You'll also notice a big difference between Medium and Low - when we
take the quality of the time pitch to Low we go to a time domain
algorithm that is substantially cheaper (just a couple of percent
CPU) the quality of course is not as good, more apt to produce
artefacts, but its still reasonable if you aren't in too demanding a
situation.
Bill
On 24/10/2005, at 10:11 PM, Brad Ford wrote:
I believe the property you want to set on the AUTimePitch unit is
kAudioUnitProperty_RenderQuality (from AudioUnitProperties.h).
The payload is a UInt32:
enum {
kRenderQuality_Max = 0x7F,
kRenderQuality_High = 0x60,
kRenderQuality_Medium = 0x40,
kRenderQuality_Low = 0x20,
kRenderQuality_Min = 0
};
-Brad Ford
QuickTime Engineering
On Oct 24, 2005, at 9:07 PM, Jeremy Sagan wrote:
Tiger's AUTimepitch unit is a very nice format converter audio
unit but it requires a bit too much processing, in its default
state on some slower machines, to be useful in real-time. However
I have discovered that setting the preset to 'complex' (from
universal) and/or setting the quality to 'medium' produces pretty
good results. The only problem is that I cannot find a way to do
this programatically, only through the built-in editor. How do I
do it?
Jeremy
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