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The upper pitch range of the human voice is, on average, about half as high in males as in females. [3] Even after controlling for body height and volume, the male voice remains lower. Charles Darwin suggested that the human voice evolved through intersexual sexual selection, [ 4 ] via female mate choices.
The voiced speech of a typical adult male will have a fundamental frequency from 90 to 155 Hz, and that of a typical adult female from 165 to 255 Hz. [3] Thus, the fundamental frequency of most speech falls below the bottom of the voice frequency band as defined.
Adult men and women typically have different sizes of vocal fold; reflecting the male-female differences in larynx size. Adult male voices are usually lower-pitched and have larger folds. The male vocal folds (which would be measured vertically in the opposite diagram), are between 17 mm and 25 mm in length. [ 10 ]
Males and females have different vocal fold sizes. Adult male voices are usually lower-pitched due to longer and thicker folds. The male's vocal folds are between 1.75 cm and 2.5 cm (approx 0.75" to 1.0") in length, [3] while females' vocal folds are between 1.25 cm and 1.75 cm (approx 0.5" to 0.75") in length. The vocal folds of children are ...
"A series of distinct, consecutive, homogeneous vocal tones that can be maintained in pitch and loudness throughout a certain range." [6] A register consists of the homogeneous tone qualities produced by the same mechanical system, whereas registration is the process of using and combining the registers to achieve artistic singing.
Mezzo-soprano range: The mezzo-soprano voice is the middle-range voice type for females; [3] it lies between the soprano and contralto ranges, over-lapping both of them. The typical range of this voice is between A 3 (the A below middle C) to A 5 (two octaves higher).
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During puberty, changes in the larynx typically result in a decrease in pitch in both males and females. On average, the male voice deepens by one octave while the female voice lowers by a few semitones. [7] The fundamental frequency (pitch) of an adult female typically falls between 165 and 255 Hz and an adult male between 85 and 180 Hz. [8]