core-audio

Anybody successfully done offline rendering using core-Audio.? I had to mix two audio files and apply reverb(used 2 AudioFilePlayer,MultiChannelMixer,Reverb2 and RemoteIO). Got it working. and i could save it while its previewing(on renderCallBack of RemoteIO). I need to save it without playing it (offline). Thanks in advance. Offline rendering Worked for me using GenericOutput AudioUnit. I am sharing the working code here. core-audio framework seems a little though. But small-small things in it like ASBD, parameters ...etc are making these issues. try hard it will work. Don't give-up :-).

Any one help to me to record and play audio Simultaneously in Iphone. You can play and record simultaneously on iOS devices (except the 1st gen Touch) using either the Audio Unit RemoteIO or the Audio Queue API. These are lower level APIs where you have to handle the incoming buffers of outgoing and incoming PCM samples yourself. See Apple's aurioTouch sample app for example code. You can get a use from AVFoundation framework. It has AVAudioPlayer to play audio files and AVAudioRecorder to record. You have to bear in mind that Recorder will record with the use of mic only. So with the

I reading song from iPod library using assetUrl (in code it named audioUrl) I can play it many ways, I can cut it, I can make some precessing with this but... I really don't understand what I gonna do with this CMSampleBufferRef to get data for drawing waveform! I need info about peak values, how I can get it this (maybe another) way? AVAssetTrack * songTrack = [audioUrl.tracks objectAtIndex:0]; AVAssetReaderTrackOutput * output = [[AVAssetReaderTrackOutput alloc] initWithTrack:songTrack outputSettings:nil]; [reader addOutput:output]; [output release]; NSMutableData * fullSongData = [

I have a children's iPhone application that I am writing and I need to be able to shift the pitch of a sound sample using Core Audio. Does anyone have any example code I could look at where this is done. There are many music and game apps in the app store that do this so I know I am not the first one. However, I cannot find any examples of it being done. you can use dirac-2 from dsp dimension for pitch shifting on the iphone. quote: - "DIRAC2 is available as both a commercial object library offering unlimited sample rates and phase locked multichannel support and as a free single channel, 44.1