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90 Cards in this Set
- Front
- Back
- 3rd side (hint)
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A-B'ing
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Comparing two programs by setting them up next to each other and switching between them
i.e. two mics at one source |
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Active Device
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Network or circuit that supplies power or voltage gain to a signal
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Alignment
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Adjusting a device into conformance with published specs
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Ambient Noise
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Long term sounds existing in the background
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Anechoic Chamber
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Room designed to provide a reflective free environment
Used for testing audio equipment |
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Attack Time
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Time it takes the signal processor to change in response to the input signal.
Compressors, gates, limiters all have this |
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Attenuation Pad
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Resistive network designed to lower the signal usually by a fixed number of dB's
Found on microphones |
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Baffle
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Partition designed to be an obstruction to sound
GOBO or a flat |
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Balance
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Related levels of two or more signals
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Balanced Line
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Two signal lines and the ground
Two signal lines are equal, potential and opposite polarity |
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Bandwidth
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The arithmetic difference between upper and lower frequency cutoff of a device
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Basic Tracks
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Bed tracks
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Bi-Amplification
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Separating the audio signal into lows and highs, amplifying each separately
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Bias
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Very high frequency applied to an analog tape to make the tape transfer linear
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Bouncing The Tracks
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Transferring pre-recorded tracks to one or two tracks to free up space on a multi-track
In the UK this is known as a "reduction mix" |
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Direct Injection
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Using a matching transformer for connecting an instrument to a console
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Diaphragm
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Moving membrane of a mic that responds to vibration
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Delay Line
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Device that introduces a delay between input and output
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De-Gauser
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Used for demagnetizing heads on an analog tape recorder
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De-Esser
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Compressor designed to reduce sibilance
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Decibel
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Measure of signal amplitude
Expresses a ratio interference to a fixed quantity |
1/10th of a Bel
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Q-System
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Part of a console by which an engineer routes headphones or monitor to the musician
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In the UK known as a fold-back line or monitor mix
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Breathing
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An audible rising and falling of background noise when using a compressor
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Bus
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Common signal line or junction at which signal paths are combined into a console
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Cancellation
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Severe attenuation that occurs when a signal is combined with an opposite polarity copy of itself
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Centre Frequency
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The highest frequency at which a filter effects the signal
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Cocktail Party Effect
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Ability of the brain to pick out one conversation out of several, one sound out of several
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Coloration
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Distortion in frequency response when a signal passes through a device
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Compressor
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Amplifier whose output gain decreases as an input gain increases
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Cross-Talk
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In a signal path it is the unwanted presence from an audio track
i.e. track one bleeds into track two |
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dBFS
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How a computer measures decibels
Can only be measured in negative quantities 0 is maximum |
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dBM
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0 dB = 0.775 volts on a 600Ω load
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dBU
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0.775 volts
regardless of impedance |
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dBV
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0 dB = 1 volt
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Direct Sound
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Sound that reaches the listener first
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Distortion
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Unwanted change when signal passes from one place to another
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Distortion, Harmonic
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Integer multiples
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Distortion, Inter-Modulation
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Sum and difference tones
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Doubling
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Slightly delayed line played with a dry line which simulates two people
40-60 ms |
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Drop-Out
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On a tape a momentary drop in signal caused by imperfections on the oxide coating or in wireless audio systems
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Dynamic Range
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In an audio system this applies to the amplitude
The distance between the noise floor and distortion point |
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ECHO
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A repetition of sound that is distinguishable from the original
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EQualization
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An internal modification of an audio systems frequency response
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fader
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Variable level control in a signal path
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feedback
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Return of a portion of the output signal into the systems input
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flutter
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High frequency speed variation caused by imperfections in the tape path
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flux
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Magnetic lines of force
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frequency response
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A graph that shows amplitude over frequency
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generation
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Refers to a copy of the master
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harmonic
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Integer multiples of a fundamental frequency
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headroom
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Difference between 0 vu and 3% distortion
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image shift
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Undesired change in the apparent location of a sound system
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isolation
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Acoustic separation from one sound source to another
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leader tape
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The clear bit on tape used for splicing
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leakage
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Unwanted sound of one instrument into the mic of another instrument
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masking
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Sound becoming inaudible due to presence of another sound of equal frequency and opposite polarity
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master
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Completed recording used to make all other copies
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noise gate
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Expander used to attenuate or completely remove low level signal
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oscillator
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Wave generating device
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oxide
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Magnetic particles suspended in a binding agent that data is stored on
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pan pot
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Used to vary proportion in two or more outputs
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passive device
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Circuit that requires no external power source
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patch bay
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Series of fundamental input/output jacks used in conjunction with patch cables for routing
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polar pattern
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Pattern that designates where a mic picks up sound and where it does not pick up sound
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pop filter
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Exceptionally transparent filter designed to reduce plosives
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presence
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EQ boost upper to mid-upper frequency range
2KhZ to 5KhZ creating a close up effect |
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protection copy
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Backup of a Master
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proximity effect
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With a directional mic, a low frequency boost is created when the mic is too close to the sound source
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psycho acoustics
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The study of the brains perception and reaction to sound
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punching in
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The practice of recording in small increments over an already recorded track
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reflected sound
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Sound waves that reach the listener after direct sound
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release time
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The time it takes for a device to return to its normal gain once the applied effect has been removed or attenuated
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saturation
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Exceeding the tapes magnetic capacity
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shield
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A physical device to reduce the affect of spurious electrical or electro-magnetic fields
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shock mount
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Suspension on a mic stand to reduce vibrations
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sibilance
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Hissy type of distortion from S-sounds
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signal processing device
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Audio system used to modify some characteristics of the sound passing through it
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signal to noise ratio
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Ratio of amplitude to noise inherent in the system
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slap back
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An audible echo from a reflecting surface
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slating
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The recording of an announcement of the take number at the beginning of a recording
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splice
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Point at which two tapes are joined together
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standard operating level
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0 vu = +4 DBM’s
0 vu = -10 DBV’s |
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standing wave
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Bouncing wave or reflections that reinforce and cancel
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sync head
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Playback head used during overdubbing
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test tape
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MRL tape containing a series of test tones for calibration purposes
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threshold
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The point at which a dynamic processor begins operating
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transient
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A relatively high amplitude decaying peak signal
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unbalanced line
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A line consisting of a signal and a ground
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wet sound
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Subjective description of a sound with effects
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wow
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Low frequency fluctuation in tape speed causing audible WOW sound
More noticeable on sustained low frequencies |
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