Re: What is the AudioStreamBasicDescription(asbd) for a wav file
Re: What is the AudioStreamBasicDescription(asbd) for a wav file
- Subject: Re: What is the AudioStreamBasicDescription(asbd) for a wav file
- From: Sanoj Nambi <email@hidden>
- Date: Fri, 9 Jul 2010 15:16:11 -0500
I used
anASBD.mSampleRate = 44100.0;
anASBD.mFormatID = kAudioFormatLinearPCM;
anASBD.mFormatFlags = kAudioFormatFlagsAudioUnitCanonical;
anASBD.mBytesPerPacket = sizeof(AudioUnitSampleType)*2;
anASBD.mFramesPerPacket = 1;
anASBD.mBytesPerFrame = sizeof(AudioUnitSampleType)*2;
anASBD.mChannelsPerFrame = 2;
anASBD.mBitsPerChannel = 8 * sizeof(AudioUnitSampleType);
anASBD.mReserved = 0;
anASBD.mFormatFlags = kAudioFormatFlagIsSignedInteger |
kAudioFormatFlagsNativeEndian | kAudioFormatFlagIsPacked;
and it is creating a wav file.I can also see the size of the file is 5 MB.But I am unable to play.
I dont want to use some other framework unless i have no other option.
Regards,
Nambiar
On Fri, Jul 9, 2010 at 10:03 AM, Paul Sanders
<email@hidden> wrote:
> I use the EAFWrite class from the iPhone version of
the DIRAC LE
> project (first link on
http://www.dspdimension.com/download/). This
> works perfectly for all
popular file formats and you can interface
> with it using float arrays
instead of ABLs.
>
> just my 2 cents
> --th
I am, however, extremely pleased to be directed to some
decent, free, pitch-shifting code. That is very cool, thank you
th.
What's an ABL? ... OK, I got it: AudioBufferList. Yeah,
they're a bit of a nuisance. Read and write from a simple buffer is what
most people want at that level. I just have a little wrapper class
(trivial, almost) of my own to hide that stuff. Maybe I just reinvented
the wheel there.
Regards,
Paul Sanders.
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