R – Which audio format would be the best

avaudioplayeriphoneiphone-sdk-3.0openal

I was using AVAudioPlayer to play multiple audio clips back to back but there was always a small silence between tracks and then i came to know of Finch, a library which uses OpenAL to play audio. with this the silence problem seems to be solved theoretically but then i found that it doesn't play m4a or any other compressed formats.

Now i am looking for an uncompressed audio format which would have relatively less file size (though uncompressed means that all of them should have almost same size) and a method to convert, i am also googling on afconvert in a mean while.

Best Answer

CAF files work great for this. I've built an application that loops audio files, and I was impressed with the relatively small file size.

Check out this question for more info on converting to CAF.

Related Solutions

IPhone SDK – OpenAL, ‘Beat Box’ style sound engine

Are you polling the source to see when it has used up a buffer?

ALuint freeBuffer;
ALint processed;
alGetSourcei (myALSource, AL_BUFFERS_PROCESSED, &processed);
while (processed > 0) {
  // remove spent buffer
  alSourceUnqueueBuffers(myALSource, 1, &freeBuffer);
  // refill buffer with samples, if they're going to be different this time
  // ...
  // re-queue buffer on source
  alSourceQueueBuffers(myALSource, 1, &freeBuffer);
  // check again for more processed buffers
  alGetSourcei (myALSource, AL_BUFFERS_PROCESSED, &processed);
}

You'll need to keep doing this polling to check for spent buffers... I used a simple NSTimer.

Ios – Using Finch to play sounds on iphone

Latest Finch now checks whether OpenAL is initialized when you initialize a new Sound. If current OpenAL context is not set because you forgot or failed to initialize Finch, you get a better error message. Give it a try, it might be the case that your initialization code is buggy.

Best Answer

Related Solutions

IPhone SDK – OpenAL, ‘Beat Box’ style sound engine

Ios – Using Finch to play sounds on iphone

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