Denis Smalley has introduced this term as a means of describing the levels, or degrees, to which listeners perceptually relate sounds to real or imagined physical and gestural sources within an acousmatic listening situation. Surrogacy may describe the recognition of familiar instrumental or vocal production when reproduced in recorded form. As the degree of surrogacy becomes more remote, listeners may ascribe imagined causes to sounds and their spectromorphological evolution, or apprehend the sound as 'abstract'. Smalley terms these varying levels as 'orders of surrogacy'.

Denis Smalley a introduit ce terme afin de décrire les niveaux ou les degrés à partir desquels les auditeurs d'une situation d'écoute acousmatique relient les sons à leurs gestes originels réels ou imaginaires. Ce terme peut ainsi désigner la reconnaissance de voix ou d'instruments familiers lorsqu'ils sont perçus sous la forme d'enregistrement. À mesure que le degré de surrogacy diminue, les auditeurs peuvent attribuer des causes imaginaires aux sons et à leurs évolutions spectromorphologiques ou appréhender le son d'une manière abstraite. Denis Smalley nomme ces niveaux de reconnaissance orders of surrogacy.

Denis Smalley introduce questo termine per descrivere i vari livelli, o gradi, con i quali un ascoltatore collega percettivamente un suono a una fonte reale o immaginaria, fisica o gestuale, in una situazione di ascolto acusmatico. La surrogacy può descrivere il riconoscimento di un suono vocale o strumentale quando riprodotto in un supporto registrato. Quando il grado di surrogacy diventa remoto, l'ascoltarore può ascrivere il suono e la sua evoluzione spettromorfologica a cause immaginarie, o comprendere il suono come ‘astratto'. Smalley definisce questi vari livelli come ‘ordini di surrogacy' (orders of surrogacy).

Denis Smalley has introduced this term as a means of describing the levels, or degrees, to which listeners perceptually relate sounds to real or imagined physical and gestural sources within an acousmatic listening situation. Surrogacy may describe the recognition of familiar instrumental or vocal production when reproduced in recorded form. As the degree of surrogacy becomes more remote, listeners may ascribe imagined causes to sounds and their spectromorphological evolution, or apprehend the sound as 'abstract'. Smalley terms these varying levels as 'orders of surrogacy'.

Denis Smalley introdujo este término como medio para describir el nivel o grado de relación perceptiva entre los sonidos y las fuentes físicas o gestuales, reales o imaginadas, que establece el oyente dentro de una situación de escucha acusmática. La sustitución (surrogacy) puede describir al reconocimiento de la producción instrumental o vocal ya conocida cuando es reproducida en forma grabada. A medida que el grado de sustitución se torna más remoto, los escuchas pueden atribuir causas imaginadas a los sonidos y a su evolución espectromorfológica, o pueden percibir el sonido como "abstracto". Smalley denomina a estos diversos niveles como "órdenes de sustitución".