# fundamental frequency

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Related to fundamental frequency: harmonics

## fun·da·men·tal fre·quen·cy

the principal component of a sound, which has the greatest wavelength, hence the lowest tone in a sound; sounds are composed of a fundamental tone and overtones or higher tones. See: harmony, noise.

## fun·da·men·tal fre·quen·cy

(F0) (fŭn'dă-men'tăl frē'kwĕn-sē)
1. acoustics The basic frequency of a vibrating object or sound as opposed to its harmonics, or the principal component of a complex sound wave.
2. The frequency of vocal fold vibration at the glottis, unaffected by resonance.
References in periodicals archive ?
Having in mind that this signal was acquired in Spain the fundamental frequency is expected to be 50 Hz, estimation by the proposed methodology solved it as 50.0209 Hz.
Finally use [[tau].sub.0] to calculate the instantaneous frequency to(t), and get the fundamental frequency F0 by (23), (24), and (25):
It is found that the energy of the signal concentrates around the 10x fundamental frequency, which is close to the peak at the 2[f.sub.i] + f frequency in the spectral diagram.
the modal analysis provide fundamental frequency which has already been discussed and helps in providing serviceability criteria for bridges.
This could cause an increase in the radiated emissions of the fundamental frequency. Therefore, it is necessary for us to study ways to eliminate radiated emissions problems.
They do need to accurately determine the fundamental frequency so that the voltage and current RMS values can be calculated.
Standard deviation of fundamental frequency (SD F0) can be taken as an indicator of regularity of pitch of voice.
Figure 9 shows the predicted coherence at the fundamental frequency. It is presented that the distributions of the coherence predicted with the original width are in good agreement with those with the double width.
The integer multiple of fundamental frequency is called harmonic which is 50 Hz in our case.
The fundamental frequency of joists and girders became a focus in Dolan et al.
Therefore, there is the need to identify the fundamental frequency and the intensity, the energy spectrum, LPC (Linear Predicting Code), the formants, signal-to-noise ratio (S/N), the signal spectrogram, time percentage of the presence of the voice inside the recording and the gender, required in the analysis of the behavior of the voice, which give the proper characteristics of each speaker.

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