[linux-audio-user] Re: Decent reverb

Marije Baalman nescivi at gmail.com
Wed Feb 2 05:43:16 EST 2005


Steve Harris wrote:

>On Tue, Feb 01, 2005 at 12:45:53 -0800, davidrclark at 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.


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