Audio electronics

The decibel (symbol: dB) is a relative unit of measurement equal to one tenth of a bel (B). It expresses the ratio of two values of a power or root-power quantity on a logarithmic scale. Two signals whose levels differ by one decibel have a power ratio of 101/10 (approximately ) or root-power ratio of 101/20 (approximately ).

engineer who operates recording, mixing, sound reproduction equipment

audio equipment that amplifies the signal strength of a device such as a CD player or an electric guitar, typically for feeding loudspeaker boxes connected to it

howling caused by a circular path in an audio system

electronic manipulation of audio signals

type of electronic filter circuitry for audio applications, especially for loudspeaker boxes; thereby mostly analog, very seldom digital

device that processes encoded sound

technology related to music

relative unit of frequency in terms of doublings

electrical power transferred from an audio amplifier to a loudspeaker

implementation of electronic circuit designs to perform conversions of sound/pressure wave signals to electrical signals, or vice versa

piezoelectric earphone, producing sound by using a piezoelectric crystal