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A duplex theory of pitch perception is an article written by the person known as J.C.R. Licklider. The article has as its specific subject, the nature of human pitch perception, and generally falls under the classification of auditory theory. He is credited with originating a model known as ''autocorrection'' (AC model), as a composite element of his formulation of the duplex model, during the year 1951, and later developed during the years 1956, 1959 and 1962. The duplex model served as a basis for models created at a later time, by; Brown & Puckette (1989), Slaney & Lyon (1990), Meddis & Hewitt (1992), Patterson ''et al'' (1995), Meddis & O'Mard (1997), de Cheveigné (1998). ''Slaney & Lyon'' constructed a pitch detector to serve as a mimic of the anatomical functioning of the human ear, and the perception of sound by a human. The representation formed by the detector is known as the correlogram, which showed two factors, the ''spectral content'' and the ''time structure'' of any particular sound transmitted for detection.〔 The word duplex has the definition, ''having two parts'', and in the specific context of systems of communication, for example computers, it is known to possess the meaning ''allowing the transmission of two signals moving simultaneously in contrary directions''.〔Oxford Dictionary - (''definition'' ) published by OUP (2015-08-08 )〕 ==See also== *Hearing *Primary auditory cortex *Sound *Transmission 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「A duplex theory of pitch perception」の詳細全文を読む スポンサード リンク
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