Re: Pitch & fundamental frequency


Subject: Re: Pitch & fundamental frequency
From: Philippe-Aubert Gauthier (Philippe-Aubert.Gauthier@USherbrooke.ca)
Date: Tue Sep 06 2005 - 11:26:51 EDT


Hello

Maybay it is possible to relate it the the "missing-fundamental" effect: with a
set of harmonics (an example: the third, forth and fifth partials of a given
tone but without the fundamental) will produce a sensation of pitch
(fundamental), which is not really their. Its because pitch seems to be so much
related to harmonic relations more than the fundamental presence (see Bregman,
Auditory Scene Analysis). I suppose that if you got a set of high harmonics
which are in conflict with a real fundamental (not exactly the fundamental of
the higher harmonics), the harmonics might win in the pitch-decision so that
pitch did not equal to the fundamental of the whole "timbre".

I am not sure if this is really related to your question. For more details, take
a look at the Bregman's section on pitch detection in its famous and so much
inspiring "Auditory Scene Analysis" on MIT Press ...

Bye!

Phil.-A.

Selon Greg Eustace <g_eustac@alcor.concordia.ca>:

> I have heard of cases where the pitch of a pitched sound is not characterized
> by
> the fundamental frequency. To reiterate, I am concerned only with those
> sounds
> having a discernable pitch which is not in obvious one-to-one correspondence
> with the fundamental. Can anyone elaborate on this, as it seems
> counterintuitive
> to me? It is quite possible that I misunderstood the statement being made.

%====================================================================
% Philippe-Aubert Gauthier, ing. jr , M.Sc.
% Étudiant au doctorat en reproduction de champs acoustiques
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