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Lesson 3.01 Part 1

Understand Principles of Audio

TermDefinition
Sounds are vibrations that travel through the air or some other medium
Sound Wave an audible vibration that travels through the air or water
Decibles the loudness or intensity of sound is measured in Decibels (dB)
Crest the point that exhibits the maximum amount of upward displacement from the rest position
Through the point that exhibits the minimum amount of downward displacement from the rest position
Wavelength the distance from crest to crest
Amplitude the distance from rest to crest or from rest to through
Frequency the number of waves to pass a point in one second
Pitch the quality of sound determined by the rate of vibration
Analog is a continuous phenoms, such as microphones, video cameras
Sample Rate the number of samples taken per second, often measured in Kilohertz (kHz)
Bit Rate the number of computer bits process per unit of time
Waveform a visual representation of a audio signal
Clip a short segment of audio.
Track an area upon which audio moves.
Trim removes everything from the left and right of selected audio
Amplify to change the volume of selected audio.
Capture to record audio, video, or still images as digital data in a file
WAV Large file size, developed by Microsoft and IBM
AIFF Large file size, developed by Apple
MP3 compressed file size
.avi (Audio Video Interleave) created by Microsoft, it stores audio and video files
.ogg (Ogg Vorbis) compressed format, popular for gaming
Created by: Colin -19-
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