Audio signal
An audio signal is a representation of sound, typically as an electrical voltage.
Contents
Description
Audio signals have frequencies in the audio frequency range of roughly 20 to 20,000 Hz (the limits of human hearing).
Audio signals may be synthesized directly, or may originate at a transducer such as a microphone, musical instrument pickup, phonograph cartridge, or tape head.
Loudspeakers or headphones convert an electrical audio signal into sound.
Digital representations of audio signals exist in a variety of formats.
An audio channel or audio track is an audio signal communications channel in a storage device, used in operations such as multi-track recording and sound reinforcement.
Connectors
- Phone connectors, also known as phone jacks, audio jacks, jack plugs
- RCA connector -- commonly found on stereo turntables
Connecting a home stereo to a computer
Use two cables, for Line In and Line Out.
Type of cable: stereo miniplug to RCA connector.
Keep the RCA ends plugged into your home stereo stack.
For use with a laptop or other mobile device, leave the stereo miniplug ends convenient for plugging and unplugging.
See also
External links
- Audio signal @ Wikipedia
