2 Feb
2005
2 Feb
'05
6:44 a.m.
Hiho,
Steve Harris wrote:
On Tue, Feb 01, 2005 at 12:45:53 -0800,
davidrclark(a)earthlink.net wrote:
>The "correct" or perhaps "most correct" impulse is a Dirac delta
so-called
>"function." Practically speaking, we cannot generate one.
>Also, I have experienced problems with using one sample impulses (arguably
>the nearest you can get to a Dirac), they dont always produce accurate
>impulses. I found that a Chirp (rapid sinewave sweep) often got good room
>impulses, but theres no ideal excitation impulse in my experience.
>
quite often, maximum length sequence techniques are used to measure room
impulse responses. it is a broadband noise signal of which you know the
spectrum exactly (the signal is semi-random).
Not sure whether there are linux programs available to do such
measurements. I believe the good old MLSSA is still used for it normally.
sincerely,
Marije