Audio encoder / decoder chip

hello all,

I am designing an application where I have an MP3 (music) decoder
along with a speech encoder (not music quality). The encoder should
preferably be able to store a file in audio format on a SD-card.

I am looking to find a single chip / chipset with minimal number of
components for my design.
I did find some encoder/decoder chips from a few manufacturers
(Micronas MAS3587F, VLSI VS1001K, ST STA 013), but I couldn't find a
"that's it" one. Has anyone used any of these chips before? Any
comments / suggestions on the pros/cons of some currently available
chips would be most welcome.

thanks,
Karthick

badader wrote:

> hello all,
> 
> I am designing an application where I have an MP3 (music) decoder
> along with a speech encoder (not music quality). The encoder should
> preferably be able to store a file in audio format on a SD-card.
> 
> I am looking to find a single chip / chipset with minimal number of
> components for my design.
> I did find some encoder/decoder chips from a few manufacturers
> (Micronas MAS3587F, VLSI VS1001K, ST STA 013), but I couldn't find a
> "that's it" one. Has anyone used any of these chips before? Any
> comments / suggestions on the pros/cons of some currently available
> chips would be most welcome.

I've looked closely at the Micronas IC while ago, and it seemed 
attractive for several reasons. I even put the schematics together, 
however it didn't make into the prototype. So I can't comment how well 
it works in the reality.


Vladimir Vassilevsky
DSP and Mixed Signal Design Consultant
http://www.abvolt.com