[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Phd copy request (Weintraub 1985)



Hi Marc,
Unfortunately, I don't have any copy of Weintraub's Ph.D. However, I think  you
can  order it from Stanford Library.
Anyway, the resynthesis you are talking about is straightforward. Since the
gammatone filterbank used by Guy Brown and Martin Cooke is Infinite Impulse
Response (IIR) , the phase delay introduced in each channel is different and
not the same over the filterbank. Therefore, to compensate for those delays,
you need to invert the signals from the synthesis stage or equivalently invert
the gammatone filters (more specifically their impulse response) at the
resynthesis stage so that the phase delays cancel out. You should then
re-invert the reconstructed signal to regenerate the sound in the correct
sequence.
Hope this can help.
Regards,
Ramin


**************************************************************************
Ramin Pichevar, Ph.D.
Research Scientist  | Chercheur scientifique
Advanced Audio Systems Lab |  Lab. de systèmes audio de pointe
Communications Research Centre Canada | Centre de recherches sur les
communications Canada
3701 Carling Ave. | 3701, avenue Carling
PO Box 11490, Station H | CP 11490, succursale H
Ottawa ON K2H 8S2 | Ottawa (Ontario) K2H 8S2
Tel: (613) 949-6451 | Fax:  (613) 993-9950 |  Ramin.Pishehvar@xxxxxx
http://www-edu.gel.usherb.ca/picr1601
Government of Canada | Gouvernement du Canada

*****************************************************************************
Quoting Marc Vinyes <marcl@xxxxxxxx>:

> Dear all,
>
> I am looking for a copy of the following PhD:
> Weintraub, M., 1985, A theory and computational model of auditory monaural
> sound separation, Ph.D.
> Dissertation, Stanford University Department of Electrical Engineering.
>
> To see the details of the resynthesis method used by Guy J. Brown and Martin
> Cooke 1994 in
> "Computational auditory scene analysis" (apparently inverting the output of
> the gammatone filters).
>
> I can't have access to it through the net and the libraries of my town...
> Does anybody know where this phd might be accessible?
>
> Thanks in advance,
>
> Marc Vinyes Raso
> http://m.drwx.org
>
>