[sdiy] Found the SoundBite demo app

[Paul Schreiber]

>>Now I have to figure out why it is outputting 913Hz. Maybe they thought
>>"well, it's CLOSE to 1Khz!"
>>
>
> Not looking very professional IMO.
>

a) it's obviously rushed out the door, because some engineer had a Q4 2007 
goal of "ship dev board in 2007". So he did :)

b) a VERY quick pass through the sine gen code (in glorious DSP56K assembly) 
hints the frequency resolution of the NCO is 93Hz, so that would be 1 count 
'off' or I should have got 1006Hz out. It appears the NCO is an 8-bit MAC 
(ack!) that was thrown together.

c) for a REAL treat, download the Blinky_LED.c code and read the 
comments....at least he was honest :)

d) there is reference in the read-me about a 'Jon Dattorro' paper (Jon is a 
well-known audio DSP guru) but no direct reference cited. Guessing this 
classic AES paper:

http://www.stanford.edu/~dattorro/EffectDesignPart3.pdf


Paul S.