The application of a function to alter the pitches of sounds, most commonly changing their duration as well. Pitch-shifting without this side-effect is related to time-stretching. In some machines this function can be controlled by oscillators, by hand-drawing or even by dynamic envelopes extracted from the sound itself or from other sounds. The expression designates only the effect on pitched sounds, but such a process can also be applied to non-periodic, non-pitched sounds or whole events. (Source - Rodolfo Caesar (1992). The Composition of Electroacoustic Music. PhD Thesis, University of East Anglia.)

Utilisation d'une fonction permettant d'altérer les hauteurs des sons et aussi, généralement, leur durée. La transposition sans ce dernier effet est liée au time-stretching. Dans certains appareils, cette fonction peut être contrôlée par des oscillateurs, par un dessin manuel ou même par l'enveloppe dynamique extraite du son lui-même ou d'un autre son. Le terme désigne uniquement un effet appliqué à des sons possédant une hauteur. Toutefois, cette technique peut aussi être appliquée à des sons non périodique, sans hauteur définie ou à un événement dans son ensemble. (Source - Rodolfo Caesar (1992). The Composition of Electroacoustic Music. Thèse de doctorat, Université d'East Anglia.)

Applicazione di una funzione che altera l'altezza di un suono, spesso cambiandone anche la durata. La trasposizione in altezza senza questo effetto collaterale viene invece chiamata time-stretching (espansione temporale). In alcuni sistemi, la funzione può essere controllata da oscillatori, oppure disegnata manualmente, oppure tramite inviluppi dinamici estratti sal suono stesso o da altri suoni. Il termine indica solitamente l'effetto ottenuto su suoni ad altezza determinata, tuttavia può essere applicato anche a suoni non periodici, a suoni ad altezza indefinita o ad interi eventi sonori. (Fonte - Source - Rodolfo Caesar (1992). The Composition of Electroacoustic Music. PhD Thesis, University of East Anglia).

The application of a function to alter the pitches of sounds, most commonly changing their duration as well. Pitch-shifting without this side-effect is related to time-stretching. In some machines this function can be controlled by oscillators, by hand-drawing or even by dynamic envelopes extracted from the sound itself or from other sounds. The expression designates only the effect on pitched sounds, but such a process can also be applied to non-periodic, non-pitched sounds or whole events. (Source - Rodolfo Caesar (1992). The Composition of Electroacoustic Music. PhD Thesis, University of East Anglia.)

La aplicación de una función para alterar las alturas de los sonidos, usualmente cambiando también su duración. La transposición o pitch-shifting sin este efecto secundario está relacionada con la expansión temporal o time-stretching. En algunos equipos esta función puede ser controlada con osciladores, "dibujando", o incluso mediante envolventes dinámicas extraídas del mismo u otro sonido. Esta expresión solo hace referencia al efecto sobre sonidos con altura definida, pero el proceso puede ser aplicado a sonidos de altura indefinida, aperiódicos, o a eventos completos.

(Fuente: Rodolfo Caesar (1992). The Composition of Electroacoustic Music. Tesis de doctorado, University of East Anglia)