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3.01 Audio Key Terms

Sounds vibrations that travel through air
Sound Wave An audible vibration that travels through water or air
Decibels loudness or intensity of a sound
Crest The maximum upward displacement of the wave
Trough The maximum downward displacement of the wave
Wavelength Distance from crest to trough
Amplitude Distance from crest to trough
Frequency Number of wave to pass a point in one second
Pitch The quality of the sound determined by the rate of vibration
Analog continuous phenomena, such as microphones, video cameras
Sample Rate rate or frequency at which a sound is sampled to digitize it
Bit Rate The number of computer bits process per unit of time
Waveform visual representation of an audio signal
Clip short segment of audio
Track area upon which audio moves
Trim removes everything from the left and right of the selected audio
Amplify change the volume of selected audio
Capture to record audio, video, or still images as digital data in a file
WAV Waveform file
AIFF developed by apple, lossless high quality
MP3 compressed format, suited for internet
.avi (Audio Video Interleave) Audio interchange file format
.ogg (Ogg Vorbis) open source, compressed format
Created by: BenBT
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