Re: Pitch & fundamental frequency

Subject: Re: Pitch & fundamental frequency
From: Dennis Bathory-Kitsz (
Date: Tue Sep 06 2005 - 13:18:40 EDT

At 11:08 AM 9/6/05 -0400, Greg Eustace wrote:
>I have heard of cases where the pitch of a pitched sound is not characterized
>the fundamental frequency. To reiterate, I am concerned only with those
>having a discernable pitch which is not in obvious one-to-one correspondence
>with the fundamental. Can anyone elaborate on this, as it seems
>to me?

By one-to-one, are you eliminating octaves?

One anecdotal example of the missing fundamental or misperceived
fundamental is the so-called "cambiata" voice of girls and boys just at the
biological change. The octave in which the voice sounds is sometimes
unclear, as it's rich with sounds that can suppress the apparent fundamental.

I haven't examined this for at least 30 years, so I'm not sure if this is
what you're asking, nor (since it predated any sound analysis tools at my
disposal!) how the sound actually falls out in proportion of harmonics and
masking of the fundamental.


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