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Discussion Groups

Discussion Groups | Freescale DSPs | Codec driver

Technical discussions about Freescale (Motorola) DSPs (including the DSP56000, DSP56300, DSP56600, 56800 DSPs).

  

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Codec driver - Kenneth Ciszewski - Nov 7 21:20:00 2004



I am using Code Warrior 6.0 for DSP56800E evaluation board and have been looking at the Codec.mcp project.  This is being compiled using SDK libraries (subdirectory "nos" )that were updated for CW 6.  In looking at this briefly, I don't see an obvious way to split out the left and right audio channels coming out of and going back into the codec, which will be requiredto do any actual filtering or other processing of the two separate audio channels.  Has anyone dealt successfully with this problem who would share their solution?


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RE: Codec driver - Louis Loving - Nov 8 14:23:00 2004

Message
The sampled data from the codec should be interleaved 16 bit words.  Sample Right, Sample Left, Sample Right, etc.  You could write a routine to separate the channels or write the filter to operate on every other sample.
 
Hope this helps,
Louis
-----Original Message-----
From: Kenneth Ciszewski [mailto:k...@swbell.net]
Sent: Sunday, November 07, 2004 3:20 PM
To: m...@yahoogroups.com
Subject: [motoroladsp] Codec driver

I am using Code Warrior 6.0 for DSP56800E evaluation board and have been looking at the Codec.mcp project.  This is being compiled using SDK libraries (subdirectory "nos" )that were updated for CW 6.  In looking at this briefly, I don't see an obvious way to split out the left and right audio channels coming out of and going back into the codec, which will be requiredto do any actual filtering or other processing of the two separate audio channels.  Has anyone dealt successfully with this problem who would share their solution?


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