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Hi all,
     I'm trying to  estimate the impulse response of the room by playing a 4 sec white noise
speech file from one end of the room and recording it at the other end. I'm told to estimate
the impulse response of the room by using Recursive Least Squares method. Please help how to
get this done, any help in this regard will be greatly appreciated.
   
  Thanks,
   
  Abhishek
Abhishek Agarwal

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Hi all,
>     I'm trying to  estimate the impulse response of the room by playing a 4 > sec white
noise speech file from one end of the room and recording it at  
> the other end. I'm told to estimate the impulse response of the room by 
> using Recursive Least Squares method. Please help how to get this done, any 
>help in this regard will be greatly appreciated.

"white noise speech file"?  what is that?

Anyway, there are programs for room response measurement

mlssa (commercial)

http://drc-fir.sourceforge.net/doc/drc.html (open source)

and others (just google!)

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I recommend to use *MLS* (maximum length sequence) signals for measurement
of Impulse response as they have a very wide frequency spectrum,so the
results are going to be much more accurate.

u can get some software which can synchronisedly record n play. or use a
command-line recording tool like recordpad so that u can fire a batch scrip=
t
n do that.

there are matlab plugins also available for room-ir measurement.i came
across an Australian Student's BTech project work in which he had coded a V=
B
application to measure room-ir.i'll have to search my old disk drive to loo=
k
for it.if u need further info or that software, get back to me.

U can also use *Sample Champion* (a free 30 days trial version is
downloadable from net) to measre room's impulse response.that also uses MLS
sequences for measurement.

I'm not an expert in all this, but was required to do a similar work for my
BTech project.

On 5/16/06, b...@web.de <b...@web.de> wrote:
>
> Hi all,
> >     I'm trying to  estimate the impulse response of the room by playing
> a 4 > sec white noise speech file from one end of the room and recording =
it
> at
> > the other end. I'm told to estimate the impulse response of the room by
> > using Recursive Least Squares method. Please help how to get this done,
> any
> >help in this regard will be greatly appreciated.
>
> "white noise speech file"?  what is that?
>
> Anyway, there are programs for room response measurement
>
> mlssa (commercial)
>
> http://drc-fir.sourceforge.net/doc/drc.html (open source)
>
> and others (just google!)
>

=20

=20

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