Acoustics Glossary


A-Z list of terminology commonly used within acoustics.

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




J

Jerk: the rate of change of acceleration.

Joule (J): unit of energy; the amount of energy used in 1 second by a source of energy delivering power at a rate of 1 watt.

Just noticeable difference (JND): a concept used in psycho-acoustic measurement; the difference between two (acoustic) stimuli, which is just noticeable in some defined condition.