Hiho, Steve Harris wrote: >On Tue, Feb 01, 2005 at 12:45:53 -0800, davidrclark@xxxxxxxxxxxxx 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
