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Frank Szendzielarz

Member Since 20 Aug 2013
Offline Last Active Aug 28 2013 12:26 PM
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Posts I've Made

In Topic: Audio sampling

22 August 2013 - 01:11 PM

Just thought I'd post this here in case anyone ends up searching for the same stuff: http://www.iar.com/G...4_MCU_part1.pdf

 

Cortex M4 has DSP instruction set and there are libraries available. 

 

Also - I found this: http://www.micromint...bambino200.html

 

It is a .NET Gadgeteer compatible board with a multi core ARM Cortex .


In Topic: Audio sampling

21 August 2013 - 01:54 PM

Hi

 

Thanks for the response. The 2Ms is more than sufficient. I did not see that on the data sheet when I looked before.

 

I think the size of the data stream might not be so important as the latency will be low enough to allow for short buffers. Also, the real work might end up in filtering (low pass, hi pass), which I could end up doing electronically. Well, in any case, I think that with some determination and playing around, I would probably eventually manage to overcome these restrictions one way or another and learn something on the way.

 

However, I am more concerned about how things work if I wanted to get the high sampling rate you mentioned done in native code, while at the same time running managed code.  How does that all work? It has been a long time since I did low level programming. Is it possible to have the native code reading the samples, by interrupts, using a timer, while at the same time feeding the results of this to a parallel executing managed thread?


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