CAF

I am working on audio recording. I am able to record my audio in caf (Core audio format). Now I want to record sound in .mp3 or .amr . I tried a lot of google but didn't found anything. I am not sure if my steps following work: Write that Audio with .caf extention to document dir Read data from that file write the file again with .mp3 or .amr extention I have 100% doubt that this will not going to work as this will just re save file with some other extension. This won't change audio codec. I thought that for converting any format whether it is audio or video we need to change its codecs and

I have used below code to combine two .caf files. NSMutableData *datas = [NSMutableData alloc]; NSData *data1 = [NSData dataWithContentsOfFile:path1]; NSData *data2 = [NSData dataWithContentsOfFile:path2]; NSLog(@"file1 size : %d", [data1 length]); NSLog(@"file2 size : %d", [data2 length]); [datas appendData:data1]; [datas appendData:data2]; NSLog(@"file3 size : %d", [datas length]); [[NSFileManager defaultManager] createFileAtPath:combinedPath contents:datas attributes:nil]; Problem is; I can able to combine two files. But when I try to play the combined file, it is playing only the first

I am working on audio recording. I am able to record my audio in caf (Core audio format).i followed this tutorial Recording Audio on an iPhone with AVAudioRecorder . Now I don't want to record sound in .aac format directly, I need to convert recorded .caf audio file into .aac audio file... any idea how to do this? #import <UIKit/UIKit.h> #import <AVFoundation/AVFoundation.h> @interface recordViewController : UIViewController <AVAudioRecorderDelegate, AVAudioPlayerDelegate> { AVAudioRecorder *audioRecorder; AVAudioPlayer *audioPlayer; UIButton *playButton; UIButton *recordButton; UIButton

I have a directory with about 50 wav files that I need to convert to caf, because AudioServicesCreateSystemSoundID() returns an error for some of them (but not all). Here's an example of the command I've used successfully for a single file: afconvert -f caff -d LEI16@44100 -c 1 whistle.wav whistle.caf How do I do this quickly - not one-by-one for each file? lavinio On Windows, use the %~ni syntax. for %i in (*.wav) do afconvert -f caff -d LEI16@44100 -c 1 %i %~ni.caf Randall Similar approach for bash: for i in *.wav; do afconvert -f caff -d LEI16@44100 -c 1 $i ${i%.wav}.caf; done Ward found

I want to combine two .wav recording files together. Can any one help me figure out how to achieve this.I tried combining the data but the headers are creating problem. Can we do the combining as we do to combine the wave files. This is how i am doing the combine, NSMutableData *datas = [NSMutableData alloc]; NSData *data1 = [NSData dataWithContentsOfFile: [recordedTmpFile1 path]]; NSData *data2 = [NSData dataWithContentsOfFile: [recordedTmpFile2 path]]; NSLog(@"file1 size : %d", [data1 length]); NSLog(@"file2 size : %d", [data2 length]); [datas appendData:data1]; [datas appendData:data2];

I'm building a voice recorder. Recoding and playing works fine on simulator. But on iphone it doesn't work. (I followed the exact steps as mentioned in iPhoneOSProgrammingGuide/AudioandVideoTechnologies ) printf("%s(player)\n",[[self.soundFileURL absoluteString] UTF8String]); AVAudioPlayer *newPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL: self.soundFileURL error: nil]; if([self.soundFileURL isFileURL]){ printf("isFileURL\n"); } self.player = newPlayer; [newPlayer release]; [player prepareToPlay]; [player setDelegate: self]; //recorderLabel.text=@"Playing.."; [player play]; printf(