Re: Getting PCM data from MP3/AAC/ALAC File
Re: Getting PCM data from MP3/AAC/ALAC File
- Subject: Re: Getting PCM data from MP3/AAC/ALAC File
- From: "Hamish Allan" <email@hidden>
- Date: Sat, 20 Dec 2008 16:22:08 +0000
On Sat, Dec 20, 2008 at 3:08 PM, William Bates
<email@hidden> wrote:
> For better or worse, the designers of Core Audio picked floats as the
> "natural" representation.
That doesn't seem to be the case on the iPhone. From "Core Audio Overview":
"The canonical formats in CoreAudio are as follows:
- iPhone OS input and output: Linear PCM with 16-bit integer samples
- iPhone OS audio units and other audio processing: Noninterleaved
linear PCM with 8.24-bit fixed-point samples
- Mac OS X input and output: Linear PCM with 32-bit floating point samples
- Mac OS X audio units and other audio processing: Noninterleaved
linear PCM with 32-bit floating point samples"
H
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