[sdiy] Microchip DSP kit $60

[Thomas Dave]

Scott Gravenhorst schreef:
> "Barry Klein" <Barry.L.Klein at wdc.com> wrote:
>   
>> Supposedly new DSP dev. kit for $60.
>> Looks like a decent kit for that much $$.
>> Anyone doing anything with it?
>> http://microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en534506
>>     
>
> Barry,
>
> Thank you for this.  
>
> DSP people - is 16 KB RAM big/small/midsize?  
>
> What sort of applications can we fit in this? 
>
> Also, what does this mean:
>  "Low cost audio capture and play back circuitry using the 12 bit ADC and PWM Audio"
>   
My guess the low cost audio playback is made with a 1-bit Sigma Delta 
modulator and it will shure need some filtering. Its easely done in an 
FPGA and is a cheap solution for a DAC.
This offcourse doesnt mean it isnt any good :-) . 1-bit can give you 
16-bit resolution wich is nice.
> Specifically, "PWM" - pulse width modulation - is that how they make audio out?  Not sure
> what the implications for that are with respect to things like aliasing, noise and
> distortion.
>
> Max sample rate of 48KHz isn't stellar, but it's usable.
>
> -- ScottG
>
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>
> -- Scott Gravenhorst
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