Specifies, for the condition of equal loudness and certain other stated conditions, relationships between sound pressure levels and frequencies of pure continuous tones. These are expressed by means of a bilinear equation for the preferred frequencies in the one-third octave series from 20 to 12500 Hz. A graphical illustration is included.
BS 3383:1988
Original price was: $190.50.$95.00Current price is: $95.00.
Specification for normal equal-loudness level contours for pure tones under free-field listening conditions
BSI Group , 02/29/1988
Pages: 12
