[hpsdr] Blackfin

[Bob McGwier]

All of the code I wrote for the AEA DSP1232/2232 in 1989 and the TAPR 
DSP project before that was fixed point.  It had all of the 
normalization stuff done.  After the FFT is optimized,  I do NOT view 
this as the end of the world to accomplish.   The need for more dynamic 
range than 16 bits in some applications and depending on the hardware 
design (where is the agc done for example) may mitigate in favor of 
using a wider fixed point or floating point.  The AEA box was 24 bit 
DSP56001.

Bob
N4HY


Ramakrishnan Muthukrishnan wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> On 7/11/07, Lyle Johnson <kk7p at wavecable.com> wrote:
>   
>> Sasquatch is not happening very quickly, and isn;t on the front burner
>> around here (K3 has consumed my life) :-(
>>
>> Anyway, this sounds like a great idea, and probably should be pursued.
>>     
>
> One thing I over looked (thanks to Steve KA6S) is that, there is going
> to be a huge software effort to port/rewrite dttsp in fixed point.
> Sasquash does not have that problem. TI C67xx floating point tools can
> be used to cross compile DTTSP for C67xx and some C-level
> optimizations can be done specific to C67xx without even writing any
> assembly code for it.
>
>   


-- 
Robert W. McGwier, Ph.D.
Center for Communications Research
805 Bunn Drive
Princeton, NJ 08540
(609)-924-4600
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