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32 Cards in this Set
- Front
- Back
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What is Sound? |
Sound is a periodic variation of atmospheric pressure. |
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Compression |
Area of higher than normal atmospheric pressure. |
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Rarefaction |
Area of lower than normal atmospheric pressure. |
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Amplitude |
The Distance above or below the center line. Amplitude is measured in decibels (dB) |
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Frequency |
The amount of waves per second (Or cycles per second). Frequency is measured in Hertz (Hz) |
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C.P.S (Cycles Per Second) |
100 C.P.S = 100 Hz 1000 Hz = 1 Kilo Hz 2500 Hz = 2.5 Kilo Hz 10,000 Hz = 10 Kilo Hz |
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Human hearing range |
Humans can hear 20 Hz --> 20 kHz Humans have a sensitivity to hearing from 1 kHz to 4 kHz. 1. It's the frequency at which babies cry. 2. The intelligibility range of human speech. |
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Phase |
The relationship between 2 identical wave forms. When 2 identical wave forms are perfectly in phase, their combined output doubles. When 2 wave forms are 180 degrees out of sync they are equal to 0 |
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Speed of Sound |
1,130 feet per second 100 Hz measures 11.3ft 1kHz = 1.13ft |
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D.A.W. |
Digital Audio Workstation (Pro Tools) |
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Sample Rate |
The amount of times the computer records the incoming sound per second. |
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Post production standard |
48 kHz 44.1 kHz 96 kHz 48 kHz 192 kHz |
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Nyquist Theorem |
In order to record the highest desired frequency sample rate must be twice as high as that frequency. |
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Bit Depth |
Amplitude component The more Bits the more sound level |
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A|D D|A Converter |
Analog to Digital vice versa. |
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Latency |
The time it takes to record and playback the digital audio. |
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Jitter |
When sample rates aren't spaced evenly |
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Pro Tools has two main windows |
- Edit - Mix |
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Transient Noises |
They clip but don't register. Distortion is above the red mark for a long period of time. Clipping is it taps the red marker. |
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Option |
Is a global modifier |
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Foley |
First person to add sound to movies (multiple tracks) Performed sound effects |
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Timecode |
Smpte |
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Pro Tools 4 main modes of operations |
Shuffle F1 Spot F3 Slip F2 Grid F4 |
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When importing sound |
Always copy/convert never add |
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Shuffle Mode |
Snaps audio files together (Most dangerous mode in the whole wide world. It'll bleep your face) |
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F5 -> 10 |
F5 - Zoom F6- Clipping Tool F7- Select Tool F8- Grab Tool F9- Scubber Tool F10- Pencil Tool |
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B Command, H |
B- Cut Command, H - Heal Cut |
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Pro Tools has 3 main modes of playback |
Timeline insertion follows playback N - on/off Command, K (pre-roll on/off) or command, 1 num pad Link timeline and edit, Shift forward slash |
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Sizing Tracks |
F7 -> hold control -> arrow up or down to size |
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Hard Cut |
jump the cut, 3 frames before and 3 frames after |
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Ambiance |
Should sit in lower 1/3 when mixing |
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Snapping |
Control, click w/grabber -> snaps to beginning of clip Control, command click w/ grabber -> snaps to end of clip |
