I've been looking at the dsPICs 30F series and the link below lists a digital filter software suite.
http://www.microchip.com.tw/PDF/dsPICDEM.pdf
Does anyone have experience of these dsPIC's ?
http://www.microchip.com.tw/PDF/dsPICDEM.pdf
Does anyone have experience of these dsPIC's ?
The 16 bit data path is insufficient for audio. It's very marginal for FIRS, and completely unusable for IIRs. I use Motorola DSPs at work, and even with 24 bit data paths we need to be quite careful about dynamic range issues.
At work, we use a dsPIC 30F series chip as the brain of a VCM/ECM (Vehicle/Engine Control Module), but that certainly isn't an audio application. Geek gave you enough reason as to why it probably isn't a good choice for your intended application.
Thank you for your replies.
Do you have any recommendations for a starter DSP evaluation board and entry level books?
Do you have any recommendations for a starter DSP evaluation board and entry level books?
I just bought the "DSP Filter Cookbook" from audioXpress. It's a good book to get started in digital filters without the heavy math. It DOES however go into programming skeletons of the filter routines in C++, but I guess that's necessary if you really want to go into that stuff. If you know basic fourier and programming it's a good source. It doesn't give you hardware implementation recipes though.
Jan Didden
Jan Didden
http://www.analog.com/processors/learning/training/dsp_book_index.html
I'm currently working my way through this DSP primer.
I'm currently working my way through this DSP primer.
TI makes a cute little starter kit for their floating point DSPs:
http://focus.ti.com/docs/toolsw/folders/print/tmdsdsk6713.html
It has analog ins & outs so you don't have to mess with building ADC/DAC stages, although they might not be the last word in audiophile-approved circuitry, and the floating point math helps you avoid most of the internal dynamic range issues of fixed-point DSPs.
That should get you started in DSP. It's a fair bit of work, but the first time you hear your code do something nice is really cool, and the feeling never goes away.
http://focus.ti.com/docs/toolsw/folders/print/tmdsdsk6713.html
It has analog ins & outs so you don't have to mess with building ADC/DAC stages, although they might not be the last word in audiophile-approved circuitry, and the floating point math helps you avoid most of the internal dynamic range issues of fixed-point DSPs.
That should get you started in DSP. It's a fair bit of work, but the first time you hear your code do something nice is really cool, and the feeling never goes away.
FYI
I have a DSP starter kit for sale in the trading post section.
It could be a low cost entry into the DSP programming world.
I have a DSP starter kit for sale in the trading post section.
It could be a low cost entry into the DSP programming world.
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