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1 Replies Last post: Jun 18, 2009 2:00 PM by Kaushal Sanghai  
Martin Wagner Member
Martin Wagner
1 posts since
Jun 18, 2009
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Jun 18, 2009 10:57 AM

Blackfin MP3 Decoder - Sample Rate Conversion necessary?

I'm intending to use the BF_MP3_DECODER core to decode 10 MP3 channels simultanously on a BF537@533MHz.

 

The Audio Sink is 32kHz Sampling Rate, Mono. Do I need a dedicated Sample Rate Conversion when using MP3s encoded with e.g. 44.1kHz oder 48kHz? How would you estimate the additional processor load for this?

 

Regards...

Kaushal Sanghai Analog Employee  
Kaushal Sanghai
49 posts since
Jan 21, 2009
Currently Being Moderated
1. Jun 18, 2009 2:00 PM in response to: Martin Wagner
Re: Blackfin MP3 Decoder - Sample Rate Conversion necessary?

Hi Martin,

 

Yes, based on your description you would need a sample rate conversion.

 

ADI does provide a SRC code. Check out the following link for all the optimized algorithms for Blackfin:

 

http://www.analog.com/en/embedded-processing-dsp/blackfin/content/blackfin_software_modules/fca.html

 

The SRC is the very first example. The MIPS information is included in the documentation for the software code.

 

Hope this helps.

 

Thanks,

 

Kaushal

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