Microphones
Waveform Characteristics
Signal Levels
Signal Processing
A/D Conversion
100
This is a device that converts one type of energy or physical attribute to another for various purposes, including measurement or information transfer
What is a transducer
100
Doubling the intensity of sound pressure creates a gain of this
What is 6 decibels
100
This is an electronics term which measures the amount of opposition a device has to an alternating current
What is Impedance
100
When using a time based processor set up through an auxiliary, the "Mix" setting should be set at this
What is 100%
100
This states that in order to produce an accurate representation of a given frequency of sound, each cycle must be sampled a minimum of two times
What is The Nyquist Theorem
200
This shows how well a microphone will produce particular frequencies
What is frequency response
200
This can be described as a time delay between two or more waveforms
What is Phase
200
This is needed to convert a high impedance signal to a low impedance one, suitable for a microphone preamp
What is a Direct Box
200
These are the two main examples of time based processing
What is Reverb and Delay
200
Of the six common sample rates, these are the two lowest ones
What is 44.1 kHz and 48 kHz
300
This states "Whenever an electrically conductive metal cuts across the flux lines of a magnetic field, a current of specific magnitude and direction will be generated within that metal"
What is the theory of electromagnetic induction
300
This is the wavelength of a 113Hz sine wave
What is 10 feet
300
The output signal of the board must pass through these before reaching the speakers to bring the signal up to speaker level
What are Control Room Amps
300
This setting must be altered on a delay to have the delayed signal delayed again
What is Feedback
300
This is the dynamic range of 16 bit audio
What is 96 dB
400
Early versions of these type of microphones could be damaged by the presence of phantom power
What are Ribbon Microphones
400
This is measured in Hertz
What is Frequency
400
Professional audio equipments line level is this
What is +4dBu
400
This type of equalizer allows the user to adjust center frequency, amplitude and bandwidth
What is Parametric Equalizer
400
This is the dynamic range of 24 bit audio
What is 144 dB
500
These type of microphones use two plates that are oppositely charged to produce a current when the distance between the plates changes
What are Condenser Microphones
500
Any frequencies that exist in addition to the fundamental pitch being played are called this
What are Partials
500
Consumer audio line level is this
What is -10dBv
500
This can be used to undo the over use of compression
What is Expansion
500
When going from a higher bit depth to a lower bit depth, this should be added.
What is Dither
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