AVR-Chat

--- In AVR-Chat@yahoogroups.com, "syberraith" <syberraith@...> wrote:
>
> I am designing a guitar pedal effect and need a MCU to sample the signal, perform a non-linear function, then generate a control current.
> 
> The project requires one ADC and one DAC these can be separate devices.  
> 
> The non-linear function can be performed without a FPU using CORDIC routines.  These would take a significant number instruction cycles to perform.  
> 
> The function could also be performed with a look up table, which would require significant memory.
> 
> I would like to have a sample rate as high as possible, 200K samples per second would be the highest desired, with 46K being the absolute lowest required.  
> 
> I have been looking at 16 bit devices in the 30 MIPS range and up.  Most of the ones I have seen with sufficient speed have been excessive elaborate.
> 
> So, does anybody know on a simple device with enough speed for my project?
> 
> Regards,
> 
> Fred
>


Fred,

Look at what others have done, this will give you insight as to the problems others have fought.

http://www.circuitcellar.com/microchip2007/winners/DE/MT1518.html

What do you mean by "excessive elaborate" ?

You will need MIPs do preform any kind of algorithm.

Will any AVR do 30MIPS ??

don