Forums

what is gated response

Started by elvi...@hotmail.com June 24, 2009
Hi~

I saw a function in a loudspeaker measurement program called "Gated Response" but there is no explaination. Could someone tell me what is that?
What does "Gate Response" do in audio aquisition?

Many many thanks!
Alvis
Hi Alvis,

"Gated" means that not all of the impulse response is is measured but only its part, gated by some enable signal. You can find the definition of the "gated response" test on this page:
http://www.claudionegro.com/swacoustic/farfield/farfield.html

--
Alexander

Hi~
>
>I saw a function in a loudspeaker measurement program called "Gated Response" but there is no explaination. Could someone tell me what is that?
>What does "Gate Response" do in audio aquisition?
>
>Many many thanks!
>Alvis
Alvis-

> I saw a function in a loudspeaker measurement program called "Gated
> Response" but there is no explaination. Could someone tell me what
> is that?
> What does "Gate Response" do in audio aquisition?'

I believe it has to do with a time limit in when the measurement program "looks" for
the response. The idea is to avoid reflections when calculating frequency response.
For example if your acquisition equipment is set up 25m away from the speaker, the
measurement program might limit the acquisition period to 15 msec or so after the
output stimulus has completed.

-Jeff