| a) frequency band within which the loudness of a band of continuously distributed sound of constant sound pressure level is independent of bandwidth
b) frequency band of sound, being a portion of a continuous-spectrum noise covering a wide band, that contains a sound pressure level equal to that of a continuous pure tone centred in the critical band and just audible in the presence of the wideband noise
NOTE – Ву "just audible" is meant audible in a specified fraction of the trials, for a specified manner of listening.
|