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Re: Getting distorted sound from AU
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Re: Getting distorted sound from AU


  • Subject: Re: Getting distorted sound from AU
  • From: Jokke Heikkila <email@hidden>
  • Date: Mon, 26 Jul 2010 13:55:39 +0300

On 26 July 2010 13:02, tahome izwah <email@hidden> wrote:
> ...not sure if this is the cause of your problems though...

I moved the line inside the loop, but as you suspected the problem still exist.

> are you
> sure that the format of the audio buffer is what you think it is? This
> could be another source of problems...

Spot on. I changed my ASBD from

desc.mBytesPerPacket = 4;
desc.mFramesPerPacket = 1;
desc.mBytesPerFrame = desc.mBytesPerPacket * desc.mFramesPerPacket;
desc.mChannelsPerFrame = 2;
desc.mBitsPerChannel = 16;

to

desc.mSampleRate = hardwareSampleRate;
desc.mFormatID = kAudioFormatLinearPCM;
desc.mFormatFlags      = kAudioFormatFlagsCanonical;
desc.mBytesPerPacket = 2;
desc.mFramesPerPacket = 1;
desc.mBytesPerFrame = desc.mBytesPerPacket * desc.mFramesPerPacket;
desc.mChannelsPerFrame = 1;
desc.mBitsPerChannel = 16;

and its working now. Thanks! Now I just need to understand the ASBD better...

jokke
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  • Follow-Ups:
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      • From: tahome izwah <email@hidden>
References: 
 >Getting distorted sound from AU (From: Jokke Heikkila <email@hidden>)
 >Re: Getting distorted sound from AU (From: tahome izwah <email@hidden>)
 >Re: Getting distorted sound from AU (From: Jokke Heikkila <email@hidden>)
 >Re: Getting distorted sound from AU (From: tahome izwah <email@hidden>)
 >Re: Getting distorted sound from AU (From: tahome izwah <email@hidden>)

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