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: An electric circuit that acts as a path for a signal
Track: Vary in frequency in the same way as another circuit or component, so that the frequency difference between them remains constant
Frequency:The rate at which a vibration occurs that constitutes a wave, either in a material (as in sound waves), or in an electromagnetic field (as in radio waves and light), usually measured per second
Hertz: The unit of frequency; one hertz has a periodic interval of one second
Decibel: A unit used to measure the intensity of a sound or the power level of an electrical signal by comparing it with a given level on a logarithmic scale
Wav: The WAV sound file format, also known as 'wave', 'movie sound file' and 'Windows sound format', is a video file used to save and record short sound clips. They are normally not used for recording and saving long pieces of music or sound
mp3: MP3 is an audio file format, based on MPEG (Moving Picture Expert Group) technology. It creates very small files suitable for streaming or downloading over the Internet.aiff: udio Interchange File Format (AIFF) is an audio file format standard used for storing sound data for personal computers and other electronic audio devices
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