Development of the Frequency Range of the Voice in Children

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Abstract
An investigation concerning the frequency range of the voice and the location of the frequency of the speaking and reading voice in that range was carried out in 126 children. It proved of value of determine the physiological as well as the musical frequency range and to establish a correct distinction between these two vocal qualities. During the development of the child these qualities show very different behavior: even in very young children the physiological frequency range of the voice has a broad, almost "adult" range; the musical frequency range of the voice develops within the limits of the physiological range and increases appreciably with age. The change in the frequency of the speaking voice parallels that of the lowest reachable physiological tone. The mutual separation of these qualities remains practically constant and amounts to an average of 4.3 half-tone intervals.

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