Re: AUConverter crackling
Re: AUConverter crackling
- Subject: Re: AUConverter crackling
- From: John Stiles <email@hidden>
- Date: Tue, 13 Jan 2004 11:33:56 -0800
How does this compare to k3DMixerParam_PlaybackRate?
(When was this added, BTW? If a user has installed QuickTime 6.5, can
we rely on it being there in 10.2.x?)
On Jan 12, 2004, at 3:44 PM, William Stewart wrote:
Yes indeed that does sound like the same problem. The AC's resampler
is NOT about dynamic adjustment (that's why to get a different sample
rate you have to make a new audio converter) and also why we have the
varispeed AU.
Bill
On 12/01/2004, at 7:21 AM, Hugues Pisapia wrote:
Well,
I went back into this thread and it seems to be also a problemk I am
experiencing... I'm using the HAL through Java to access the
recording (and playback) facilities. I want to perform resampling on
the fly and get crackling sound, apparently, between each chunk of
audio that go throught the AC.
Is that the same problem, and do I have to use the AudioUnits as
well? If so... What is the AC for?
Hugues
Stefan Werner wrote:
Hi,
To: email@hidden
From: Chris Rogers <email@hidden>
Subject: Re: AUConverter crackling
The AudioConverter is not designed to change sample-rate on the fly
like
this. The AUVarispeed AudioUnit should be perfectly adapted to this
application by tweaking the "rate" parameter on the fly.
OK, I'll try that. Is it using FFT or is it doing simple resampling?
I need the latter, that's why I tried the AUConverter. To me,
AUVarispeed sounded more like timestretching than resampling.
I suppose there's no other documentation than the WWDC presentation
Bill mentioned?
Stefan
http://www.hdm-stuttgart.de/~sw19/audiospace/
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