On Jul 16, 2008, at 12:17 PM, Olin Lathrop wrote:

>> it needs to be of fairly descent quality.
>
> Now that's a totally useless statement.
> There is no point suggesting schemes until you know what you want.

Does anyone have numbers to go with:
ISD quality.  Telephone Quality (56kbps!)  AM radio quality.  FM  
Radio Quality.

The "standard" scheme is serial flash memory of some type and an A-D  
converter.  You get to pick and trade bits and sample rate to get  
more or less quality with more or less memory.  At some point, you  
start looking at consumer "flash cards" for storage rather than  
chips.  Here's an open source design (and kit) designed to be used  
with AVR:

http://www.adafruit.com/index.php? 
main_page=product_info&cPath=17_21&products_id=94

BillW

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