[hpsdr] HPSDR / PowerSDR hardware selection

[Michael White]

Hi

Ah of course I forget, it only has a fixed point math core.

Although I seem to remember it has a few bits of overflow headroom in  
the result register bank.

That might explain why a well known commercial TRX seems to have a  
good few DSP issues to iron out.

73

Michael
G3WOE



On 25 May 2008, at 19:14, Lyle Johnson wrote:

>> I know the Analog Devices Blackfin processor is running uClinux as  
>> a viable OS for DSP,. That  could be a really good open source  
>> platform for Sasquatch with all the free toolchains.
>
> But is a 16-bit fixed point processor.  Used very carefully, it can  
> do a lot.  But you end up focusing on the details of the chip  
> instead of the objective of the algorithm.  If you want more than 96  
> dB of at-the-instant dynamic range, it won't do it -- and the 96 dB  
> implies lots of quantization noise for low level signals which adds  
> it own artifacts to the recovered audio
> 73,
>
> Lyle KK7P
>


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