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" <openspec...@gmail.com> 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 <idiotsavant2...@gmail.com> 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. > > > _______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/cocoa-dev/openspecies%40gmail.com > > This email sent to openspec...@gmail.com > -- -mmw _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
