Audio signal

Source: Wikipedia, the free encyclopedia.

An audio signal is a representation of

phonograph cartridge, or tape head. Loudspeakers or headphones
convert an electrical audio signal back into sound.

Digital audio systems represent audio signals in a variety of digital formats.[1]

An audio channel or audio track is an audio signal

sound reinforcement
.

Signal flow

Signal flow is the path an audio signal will take from source to the speaker or recording device. Signal flow may be short and simple as in a home audio system or long and convoluted in a recording studio and larger sound reinforcement system as the signal may pass through many sections of a large mixing console, external audio equipment, and even different rooms.

Parameters

Audio signals may be characterized by parameters such as their

single-ended or balanced
.

Audio signals have somewhat standardized levels depending on the application. Outputs of professional mixing consoles are most commonly at line level. Consumer audio equipment will also output at a lower line level. Microphones generally output at an even lower level, known as mic level.

Digital equivalent

The digital form of an audio signal is used in audio plug-ins and digital audio workstation (DAW) software. The digital information passing through the DAW (i.e. from an audio track through a plug-in and out a hardware output) is an audio signal.

A digital audio signal can be sent over

.

See also

References

External links