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
Noise in the audio frequency range, having subjective characteristics analogous to prolonged sibilant sounds. (188) Note: Noise in which there are no pronounced low-frequency components may be considered as hiss.