mean fundamental frequency

2011 11 13
2 个回答
更新时间：2016 11 17
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hi, how can i estimate the mean fundamental frequency of a vowel sound with a known sampling frequency. thanks in advance

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Naz
Naz 2011-11-13
Are there any assumptions in relation to sampling rate and the frequency content of the sound? The frequency distribution or the envelope of the frequency spectrum?
deji
deji 2011-11-14
the only things that i got from the sound are the 3formant frequencies, the lpc coefficients of of period nd some figures, but i avnt seen anything that links to the fundamental frequency

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回答（2 个）

Walter Roberson
Walter Roberson 2011-11-14

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When you know the number of samples and the sampling frequency, then you can assign a frequency to each fft bin. Pick out the fft bin that has the largest absolute magnitude, convert bin number to frequency, and you have a start at the problem.
But only a start, because the largest absolute value does not necessarily occur at the zero'th harmonic of the fundamental. You can do searches like looking to see if there is non-trivial energy one octave down, but there can be cases where the fundamental frequency is absent even though harmonics are present.

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deji
deji 2011-11-14
can this be obtained using formant frequencies instead of assigning frequencies?

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Greg Dionne
Greg Dionne 2016-11-17

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If you have a recent copy of the Signal Processing Toolbox, you can search for "meanfreq"

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提问:

deji
deji
2011-11-13

回答：

Greg Dionne
Greg Dionne
2016-11-17

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