0-9 | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
In acoustics, a unit of subjective loudness level equal to the sound pressure level in dB compared to that of an equally loud standard sound. Note: The accepted standard is a 1-kHz pure sine-wave tone or narrowband noise centered at 1 kHz. [From Weik '89]