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CTAT 131
MIDTERM REVIEW
72
Other
Not Applicable
03/08/2006

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Term
Amplitude
Definition
The strength or height of a sound or radio wave.
Term
Volume
Definition
Loudness.
Term
Decibel
Definition
A measurement to indicate the loudness of sound.
Term
Direct Sound
Definition
Sound that goes straight from a source to a microphone.
Term
Microphone
Definition
A transducer that changes sound energy into electrical energy.
Term
Reflected Sound
Definition
Sound that bounces back to the original source.
Term
Signal Path/Audio Chain
Definition
The path of a particular signal from a piece of equipment through a console, and/or signal processing devices, to a monitor, transmitter or recording device.
Term
Transducers
Definition
Change the form of energy. (Acoustic to electric, electric to magnetic, electric to acoustic etc.)
Term
Standing Waves
Definition
A combination of two identical waves going in opposite directions (out of phase). This phenomenon causes cancellations in parts of the overall sound wave. This is largely an undesirable acoustic characteristic.
Term
Dub
Definition
n. A copy of a particular audio/video program. v. To copy a particular audio or video program.
Term
1KHz - 5KHz (Midrange)
Definition
The most sensitive frequency range in human hearing.
Term
Audible frequencies to the human ear
Definition
20Hz to 20KHz
Term
Automated dialogue replacement (ADR)
Definition
Re-recording of dialogue by actors in a sound studio during post-production, usually performed to playback of edited picture in order to match lip movements on screen.
Term
Foley Artist
Definition
Create props / recreate environment to create sound effects.
Term
Group ADR/Walla
Definition
Group dialogue or background group noise.
Term
Location sound effects
Definition
Sound recorded at a remote location / outside of the studio.
Term
Digital sound effects
Definition
Sounds coming from a sound library - insertion of sound from computer directly.
Term
Sound editing
Definition
Cueing up sounds to match video.
Term
Sound mixing
Definition
Altering or adding to a sound by editing.
Term
Re-recording sound technology
Definition
Recording audio separate from time when recording video, sometimes used in silent era films.
Term
Sound design
Definition
Coined through Apocalypse Now
Term
Binary numbers
Definition
A number system consisting of ones and zeros constituting yes or no.
Term
Sampling
Definition
In digital technology, the process of taking readings from the original sound source to convert to binary data.
Term
Sampling rate
Definition
The number of times per second that a reading of the sound source is taken in order to convert it to binary data. 44.1KHz is the most common stereo sampling rate.
Term
Standard bit rate (SBR)
Definition
The standard type of compression wherein an entire audio file is encoded at the same bit rate, as opposed to variable bit-rate encoding (VBR).
Term
DSP
Definition
Digital signal processing. The process used to alter (usually in real time) an audio or video signal in such a way that it sounds or looks different from the original. Examples of signal processing include: boosting bass, simulating a 3D environment, reverb, chorus, and so on.
Term
Audio card
Definition
A piece of circuitry you can add to your computer that allows it to play and record sound.
Term
Sound file
Definition
Any file which holds sound data.
Term
Waveform display
Definition
A graphical representation of a signal, or electrical current. A waveform graphs the signal's amplitude (strength) over time. The result is a curving line that looks like a wave.
Term
Digital audio workstations (DAW)
Definition
A computer-based system that can create, store, edit, mix, and send out sound in a variety of ways, all within one basic unit.
Term
Standby hand-signal
Definition
Given just prior to going on air by holding one hand above the head with the palm forward.
Term
Cue talent hand-signal
Definition
Meaning, "You're on," given by pointing your index finger (using the same hand that gave the standby singal) at the person who's supposed to go on air.
Term
Cut hand-signal
Definition
Given for stopping a program by drawing the index finger across the throat in a "slitting" motion.
Term
Two minutes left hand-signal
Definition
Hold up index and second finger of one hand in front of you.
Term
Give mic level hand-signal
Definition
Hold one hand out in front of you with the palm down and thumb under the second and third fingers. Open and close the thumb and fingers in a "chattering" motion to indicate that the announcer should talk into the mic so that levels can be checked.
Term
Stretch it out hand-signal
Definition
Pulling hands apart, as if stretching something.
Term
Speed up hand-signal
Definition
Pointing and spinning the index finger in the air.
Term
Thumbs up hand-signal
Definition
Given when everything is going fine.
Term
Three primary functions of an audio console
Definition
To amplify a signal, to route a signal, and to mix two or more signals together.
Term
Amplify
Definition
To make a sound louder.
Term
Route
Definition
Sending the audio signal to another source.
Term
Mix
Definition
Combining audio sources.
Term
Channel / Input selectors
Definition
Select between a microphone or line level signal.
Term
Gain/Trim controls
Definition
Adjust the amount of amplification applied to a given input signal.
Term
Assignment switches
Definition
Assign a channel to a particular left/right output or a submaster output.
Term
Pan Pots
Definition
Place a channel's signal in the L-R spectrum.
Term
Faders (Channel and master)
Definition
Adjust relative amplification for mixing or bringing a signal into a Left/Right mix.
Term
PFL/Solo switches
Definition
Allow for isolated monitoring of a particular signal.
Term
Source selector
Definition
Selects signal source to feed control room monitors.
Term
Control room volume
Definition
Adjusts monitoring level within control room.
Term
On/Off switch
Definition
shut the fuck up
Term
VU Meters
Definition
(moving needle type) measure an average decibel level
Term
LED meters
Definition
Measure decibel level as well as peak level of a signal.
Term
Master fader
Definition
The final output stage of a signal within a console.
Term
Monitoring
Definition
The act of listening to a signal through an audio console; that signal being either program (broadcast) material, or being cued (previewed) for broadcast or recording purposes.
Term
Headphones
Definition
Allow for the monitoring of a signal where a live microphone is in operation. (Purpose - to avoid feedback.)
Term
Fade-in
Definition
To bring sound up from silence to full volume.
Term
Fade-out
Definition
To take sound from full volume silence.
Term
Cross-fade
Definition
To bring up one sound and take down another in such a way that both are heard for a short period of time.
Term
Segue
Definition
To cut from one sound at full volume to another sound at full volume.
Term
Dynamic microphones
Definition
Creates an electrical signal by the movement of a magnet and a moving coil.
Term
Moving coil mic
Definition
Another name for a dynamic mic.
Term
Condenser/Capacitor microphones
Definition
Create an electrical signal through the movement of a diaphragm within an electrically charged field.
Term
Wireless microphones
Definition
Allow for the use of a microphone without a cable through an FM or UHF transmission of the signal.
Term
Shotgun microphones
Definition
A mic capsule is at one end of a tube, or barrel, that is "aimed" like a gun toward the sound source.
Term
Cardioid
Definition
Picking up a sound in a heart shaped pattern.
Term
Unidirectional
Definition
Picking up sound from one direction.
Term
Hypercardioid
Definition
Picking up sound well from the front, but not the sides.
Term
Omnidirectional
Definition
Picking up sound from all directions.
Term
Bi-directional
Definition
Picking up sound from two directions.
Term
Pressure zone microphones (PZM)
Definition
A flat microphone that, when set on a table or other flat surface, uses that surface to collect the sound waves and therefore can pickup audio levels from a fairly widespread area.
Term
Proximity effect
Definition
The phenomenon of increased bass response in a microphone when a sound source is moved closer to it. (directional microphones only)
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