usage of AUTimePitch in an AUGraph
usage of AUTimePitch in an AUGraph
- Subject: usage of AUTimePitch in an AUGraph
- From: "thomas rettich" <email@hidden>
- Date: Sat, 27 Aug 2005 23:38:32 +0200
Hi,
I have a problem with the construction of an augraph that includes the
Autimpitch converter unit.
I am fairly new to core audio but I'd highly appreciate any help.
what I want to do in my application is play an mp3 file from disk and use
the autimepitch au to modify the rate of the audio in real time (without
affecting the pitch). I've used the aufileplayer au to play the file and
connected it the default output which worked fine. but when I try to add a
node for autimepiotch in the graph (bewteen the fileplayer and the ouput
units) it wouldn't work (i.e. aufileplayer -> autimepitch -> outputunit).
can anybody help ?? do I have to set a different format for the input bus of
the output unit since autimepitch converts the format.. if so what exactly
do I have to do ?
one more thing I was trying to figure out ... if an audio unit is using a
callback to obtain audio data and in the callback function the data is
retrieved from an audio file, which buffer do i have to write the data into,
where do I have to allocate the memory for the buffer and what size should
it be ?
I hope someone can help.
thanks,
thomas
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