Lpc2000

Hi All,

 

I'm facing a new challenge that I haven't tried to solve before and I would
like some input if anyone has tried this before. I need to record and
playback voice/sound from a microphone and store it on a Secure Digital card
with FAT16 file format, which is no problem, but what I would like some
input on is what "front end" IC I could use to maybe do the MP3 encoding so
that I only have to "cheat" and store the pre encoded signal on the SD card
and be able to play it back again.

 

I was thinking of using maybe a IC like this:
http://www.analog.com/UploadedFiles/Data_Sheets/76229755AD73311L_a.pdf
although it does not have the capacity to encode/decode MP3, I could use it
for both encoding and decoding my raw audio signal, but what I can't
determine is if I'm able to store the data as fast as it samples with
64/32KHz onto the SD card.

 

I know that Micronas makes some kind of MAS de/encoder for MP3 but have
anyone had success with it? 

 

Best regards

Lasse Madsen

 

/My current knowledge doesn't enable me to use DSP processors as I've never
worked with them before and now is not the time to start unfortunately.



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