日本音響学会誌
Online ISSN : 2432-2040
Print ISSN : 0369-4232
音声のピッチ抽出に関するシンポジウム : ピッチ抽出器試作結果
永田 邦一加藤 康雄
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1960 年 16 巻 4 号 p. 277-279

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An instrument has been developed as a part of a formant-vocoder for smoothly detecting wide-range voice pitch frequencies. Speech signals from a conventional telephone are cross-modulated, low-passed, frequency-inverted, and frequency-analyzed. Analyzed signals are discriminated separately, and their DC output voltages are compared in a simple diode adder in order to select the most significant voltage which indicates the pitch frequency. The voltage-versus-frequency characteristic is closely linear, and the response time is comparatively small. The temperature characteristic, however, is not satisfactorily good yet.

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© 1960 一般社団法人 日本音響学会
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