Stereo- Sound that is directed through two or more speakers so that it seems to surround the listener and to come from more than one source; stereophonic sound.
Channel- A "channel" in audio is just one separate stream of audio information. Mono audio sources have one channel.
Track- Audio tracks contain digitally sampled sounds.
Frequency- Abbreviated as AF, audio frequency represent the range of signals that are audible to the human ear. The range of audio frequencies is usually considered to be in the region between 20 and 20,000 hertz.
Hertz- Hertz is what frequency is measured in.
Decibel- the amplitude of a signal compared with the maximum which a device can handle before clipping occurs.
Wav, Mp3, Aiff- These are different types of audio file formats. The one used the most out of the three is MP3 which is used on most portable media players (example iPods)
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