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Re: support for two's complement 24 bit audio
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Re: support for two's complement 24 bit audio


  • Subject: Re: support for two's complement 24 bit audio
  • From: William Stewart <email@hidden>
  • Date: Wed, 24 Sep 2008 10:30:37 -0700


On Sep 23, 2008, at 7:13 PM, Jeff Moore wrote:

Two's complement is just another way of saying signed linear PCM, isn't it?


So, I think we are understanding your question, and yes, core audio's audio converter supports 24 bit (what we call signed) int formats:


>>
We do support 8-bit (signed and unsigned), 16-, 24- and 32-bit (signed) integer formats. (if not packed, high-aligned only)
>>


For this the 24bit format is supported both as packed and as high- aligned within a 32bit word

Bill


Begin forwarded message:

From: Tommy Schell <email@hidden>
Date: September 23, 2008 7:47:40 AM PDT
To: email@hidden
Subject: support for two's complement 24 bit audio

Hi,

I posted this question on the Quicktime list, but perhaps it is more appropriate here.
Does support exist for 24 bit two's complement audio in Quicktime files?


I found that 16 bit support is available for two's complement, but I can't find it for 24
(or even extended to 32 bit) two's complement.


Can you please advise, and if it does not exist what might you recommend to convert the two's complement
to a supported audio format in 24 bit?


Thanks a lot,
Tommy Schell
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--

Jeff Moore
Core Audio
Apple



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References: 
 >support for two's complement 24 bit audio (From: Tommy Schell <email@hidden>)

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