[dorkbotpdx-blabber] Microcontroller + RAM.. recording/playback

[Donald Delmar Davis]

It's funny.

  If I remember right the only pins that aren't really exposed on the  
teensy++ are the xmem interface control lines.
You can easily add up to 64k of native xmem (more if you bank them) to  
that olimex board I gave you a while back.
I don't know what data rates you can get with the sd cards but they  
are cheap and easy to interface.

Don.


On Jul 23, 2009, at 1:54 PM, Alex Norman wrote:

> I'm looking to build a very simple audio/control voltage  
> recorder/"sampler" with
> a micro-controller.  I realize a DSP might be the best thing for  
> this but I'm
> curious if I can do it with a micro-controller for cheap.   
> Basically, the piece
> that is the major problem is finding a reasonably large memory  
> device which I
> can quickly read and write single bytes at a time.  Obviously this  
> calls for
> RAM.  I'm hoping that I can read bytes at at least 88.2khz and write  
> at the same
> rate, at the same time.  500KB would be ideal but as little as 64KB  
> would be fun
> to work with.
>
> As usual I try to stick with DIP as much as I can, but maybe this  
> won't be
> possible..
>
> Anyone have any recommendations or experience with this sort of thing?
>
> I've been thinking that I could actually do this with eeprom if I  
> make it so
> that the device doesn't 'record' and 'playback' at the same time..  
> but it would
> be ideal if I could do both..
>
> -Alex
>
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