Hector,

  Any possible way to improve the sound to a better
quality*like phone quality*? I don mind changing the
MCU. DSP does better?

John


--- Hector Martin <hector@marcansoft.com> wrote:

> engineer@neomailbox.com wrote:
> > more than a few of us have tried this BTC idea
> without any success. My  
> > research seemed to indicate that at least 3 bits
> are needed to cover  
> > the dynamic range needed for almost any viable
> sound.
> 
> I've built it (1.5bit version), runs fine. The sound
> quality isn't 
> awesome, but it's good enough to be intelligible
> without any problems. 
> You do need an amp, and it does help if you tweak
> the filter circuit.
> 
> -- 
> Hector Martin (hector@marcansoft.com)
> Public Key: http://www.marcansoft.com/marcan.asc
> 
> -- 
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> 



 
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