TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

PUISSANCE MUSICALE [1 record]

Record 1 2015-02-25

English

Subject field(s)
  • Audio Technology
DEF

The short-term power available from an amplifier for the reproduction of program material. The music power output exceeds the rms power rating to a greater or lesser extent. Its measurement is standardized by the Institute of High Fidelity (IHF) and represents a practical means of stating the actual capabilities of an amplifier for the reproduction of program material.

OBS

This concept has been replaced in the new IHF standard (IHF-A-202, 1978) with that of "dynamic headroom rating". (cf. AUDIO 62(6), 1978, p. 32).

Key term(s)
  • dynamic headroom rating

French

Domaine(s)
  • Électroacoustique
DEF

Puissance d'un amplificateur qui se calcule en fonction de la dynamique (...). Soit, le rapport entre les pianissimo et fortissimo. La puissance moyenne se situant entre les deux et en admettant un certain taux de distorsion (la moyenne audible d'un taux de distorsion est de 5%!), affectant les fortissimo sur un temps très court (pratiquement inaudible), on trouve une puissance musicale supérieure d'environ 20% à 30% à la puissance efficace.

OBS

On a proposé dans une nouvelle norme IHF (1978) de remplacer cette notion par celle de la capacité de surcharge en dB d'un ampli. (cf. NOSON, 22, 1978, p. 276).

Spanish

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