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MAWD Lesson 3.01

Understand Principles of Audio

TermDefinition
Sounds Vibrations that travel through the air or some other medium.
Sound Wave An audible vibration that travels through air or water.
Decibels Measurement of the loudness or intensity of a sound; (dB).
Crest Point that exhibits maximum amount of upward displacement from the rest position.
Trough Point that exhibits maximum amount of downward displacement from the rest position.
Wavelength Distance from crest to crest.
Frequency Number of waves to pass a point in one second. (How Fast)
Pitch Quality of a sound determined by the rate of vibration. The degree of highness or lowness of a tone. (How High)
Analog a continuous phenomena, such as microphones, video cameras (continuous-valued voltages)
Sample Rate The rate or frequency at which a sound is sampled to digitize it. Measurements of a sound wave over time measured in Hz (cycles/sec).
Bit Rate Depth; the number of computer bits that are conveyed or processed per unit of time.
Waveform a visual representation of an audio signal.
Clip is a short segment of audio. It can be combined with others to make an audio tack.
Track Channel; an area upon which audio moves.
Trim Removes everything from the left and right of selected audio.
Amplify change the volume of selected audio
Capture to record audio, video, or still images as digital data in a file
WAV Developed by IBM and Microsoft for Windows; High Quality (Lossless) Large File Size
AIFF Developed by Apple; High Quality (Lossless) Large File Size
MP3 Compressed format Popular for music (MP3 Players) Well suited for Internet
.avi (Audio Video Interleave) Developed by Microsoft Stores both Audio and Video Files
.ogg (Ogg Vorbis) Open Source Compressed format Well Suited for Internet Popular with Gaming Industry
Amplitude Distance from rest to crest to trough
Created by: kamerens
Popular Business sets

 

 



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