Newsgroups: comp.speech
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From: simonk@cstr.ed.ac.uk (Simon King)
Subject: Re: Q : LPC - Spectrum
Message-ID: <Cov32s.G02@aisb.ed.ac.uk>
Sender: news@aisb.ed.ac.uk (Network News Administrator)
Organization: Centre for Speech Technology Research, Edinburgh University
References: <kordmann.766763181@ldv01> <2p2poa$bol@infa.central.susx.ac.uk> <2p3fpb$bd@dr-pepper.East.Sun.COM> <1994Apr21.184043.3229@uk.ac.swan.pyr>
Date: Tue, 26 Apr 1994 10:13:40 GMT
Lines: 10


|> I think the most efficient way of evaluating the spectrum of an LPC
|> filter is to first calculate the spectrum of the *whitening* filter.
|> As this is an FIR filter the impulse response will only be a few
|> samples long and these samples are equal to the LPC coefficients,
|> i.e.  1, a(1), a(2), ... a(n), 0, 0, 0....

Why the name "whitening" filter ?  ^-- this is the _inverse_ filter.

Simon
