[PD] feedback control

[B. Bogart]

I've used the getner before, and have been exposed to the vortex. These
are in the class of "echo suppression" do deal with a lag between the
input and the output (mics and speakers). Often used in video
conferencing and other open mic/speaker setups.

they are HELL to configure and expensive...

I think McGill or UQAM are working on software echo-suppression stuff.... ?

B>

sven wrote:
> I know some because I did a
> http://www.google.com/search?q=%22feedback+suppressor%22&sourceid=opera&num=0&ie=utf-8&oe=utf-8
>
> just a few minutes ago...
> sven.
>
>> That strategy seems like it'd be good for a piece of dedicated
>> hardware to do. Do you know of any?
>>
>> -Ian
>>
>> sven wrote:
>>
>>> hi robert,
>>> feedback suppression should be quite easy to achive w/ the vasp
>>> external.
>>> fft the incoming signal. check if there are 1 or 2 bands which are
>>> much louder than their neighbours.
>>> if so multiply that bands which an adjustable value <1 and than take
>>> the ifft.
>>> feedback noise is a pure sine (until it's getting so loud that it'
>>> distorts) so
>>> they don't have overtones and cause a significant peak in at most 2
>>> neighbouring bands.
>>> sven.
>
>
>
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