Re:Re: How to implement quick-playing and slow-playing of sound file?
Re:Re: How to implement quick-playing and slow-playing of sound file?
- Subject: Re:Re: How to implement quick-playing and slow-playing of sound file?
- From: null <email@hidden>
- Date: Tue, 24 Mar 2009 10:14:20 +0800 (CST)
Hi I am Mac. Anyway ,I should say "Thank you" to both of you. Thank you for you help. Mac
在2009-03-24，"mm w" <email@hidden> 写道：
Hello, it depends if you have time to learn, using AudioUnits is a
long way to go before beeing statisfy, I don't know your background, I
am only an hobbyist musician and doing hobbyist stuff with CoreAudio,
for instance
you have to learn to use AU Lab or create your testing View-tool, + do
you use AUGraph? , + sure it depends on what kind of sound/music...
with QT, if the final pitch is too high or low, it will be
auto-regulate (don't burn everything:)) and you may obtain some
unwanted results, anyway I recommend you to subscribe to the
core-audio mailing list.
Cheers!
On Mon, Mar 23, 2009 at 9:30 AM, I. Savant <email@hidden> wrote:
> On Mar 23, 2009, at 3:25 AM, ldl0313036 wrote:
>
>> I am developing an application which implement the playing of sound file.
>> Now I want to change the rate of the sound when it is playing.In other words
>> ,I want to implement quick-playing and slow-playing of the sound file.Is
>> there any API for the function? Or can any one tell me any clue about it.
>> Please help me in solving this query. Any pointers would be appreciated.
>
> Look into QTKit and its documentation. There are ways to either change the
> rate (that's a good search keyword) or AudioUnits (via CoreAudio) to change
> the speed without bending the pitch.
>
> --
> I.S.
>
>
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--
-mmw
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