File:EB1911 Voice - Pitch range diagram.jpg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 19:10, 1 November 2021 | 985 × 1,096 (256 KB) | Bob Burkhardt | {{Information |description = {{en|1=The ranges of the different varieties of voice are shown in this diagram, where the dotted lines give the range of certain remarkable voices, and the figures represent vibrations per second, taking the middle C of the piano as 256 vibrations per second.}} |date = {{Date context|published|1911}} |source = “Vision,” ''Encyclopædia Britannica'' (11th ed.), v. 28, 1911, p. 174. |author = John Gray McKendrick |permission = {{PD-Britannica}} }}... |
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