[LAU] Feedback Cancellation Plugin

[Giso Grimm]

On 10/22/2016 08:19 PM, Fons Adriaensen wrote:
> On Sat, Oct 22, 2016 at 10:49:11AM -0700, Len Ovens wrote:
> 
>> The polarity of the FOH/monitor speakers does matter in this case.
> 
> Maybe if mic and speaker are close. But consider a mic that is
> 5 meters from a FOH speaker. That's 14 ms at the speed of sound.
> In each 70 Hz frequency interval there will be one frequency
> which returns exactly in phase, no matter what polarity. And
> that's considering only the direct path.

And this is without any delay in signal processing. Any additional delay
in the signal processing will increase the density of in-phase
frequencies, thus minimizing the processing delay might increase stability.


- Giso

> 
> Ciao,
>