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MAWD lesson 3.01

Understanding Principles of Audio

Sound Vibrations that travel through the air or another medium and can be heard when they reach the person's or animal's ear
Sound wave Wave of compression and refraction, by which sound is propagated in an elastic medium such as air
Decibels Unit 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
Crest Point on a wave with the maximum value of upward displacement of the medium is at a maximum
Trough Lowest point the medium sinks to
Wavelength Distance between 2 identical positions in the cycle or wave
Amplitude Size of the vibration , determines how loud the music is
Frequency Speed of the vibration, determines the pitch of the sound
Pitch How high or low the note is
Analog Actual, continuous sound waves generated by the artists and their equipment
Sample rate How many times per second a sound is sampled
Bitrate Number of bits, or the amount of data that is processed over a certain amount of time
Waveform depiction of the pattern of sound pressure variation in the time domain
Clip Film or video rendition of a recorded song, often showing the musicians performing or showing images that illustrate the lyrics or mood of the song
Track One pf several songs or pieces pf music on a recording
Trim Knob used to adjust the level of input signal as it enters the home recording sound mixer
Amplify Make music louder by strengthening electrical signals
Capture Physical record of a musical performance that can then be played back, or reproduced
WAV Files that are lossless uncompressed broadcast CD quality music files
AIFF Audio file format standard used for storing sound dara for personal computers and other electronic audio devices
mp3 Compressed audio file format developed by the moving pictures experts group
.avi Computer file format that contains audio and video data and is used to play back the audio and video data simultaneously
.ogg Free, open container format created under unrestricted software parents by the foundation
Created by: 5174454257



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