[linux-audio-dev] Mixing signals

Richard Spindler richard.spindler at gmail.com
Mon May 23 09:44:53 UTC 2005


On 5/23/05, Erik de Castro Lopo <erikd-lad at mega-nerd.com> wrote:
> >                 if (*p_A<0 && *p_B<0) {
> >                         *p_output =(*p_A+1)*(*p_B+1)-1;
> >                 } else {
> >                         *p_output =2*(*p_A+*p_B+2)-(*p_A+1)*(*p_B+1)-3;
> >                 }
> 
> Why? What is this supposed to achieve and what's wrong with:
> 
>         *p_output = *p_A + *p_B;

It's some evil black magic that tries to avoid disortion. I'm not sure
whether it's the right way to do, but I was inspired by some website,
but i don't have the link anymore.
The original code-snippet performed a similar operation on integer-data.

-Richard




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