Sound waves in air are represented by the air pressure alternating between:
- a) Compression and Ratification
- b) Compression and Rarefaction
- c) Compression and refraction
- d) Compression and Release
Audio Engineering Exam Questions
Audio Engineering Questions
The distance between two consecutive positive maximum peaks on a sine wave is equal to:
- a) 1 wavelength
- b) 1/2 wavelength
- c) 1 Hertz
- d) 1/2 Hertz
Theory of Sound Questions
Doubling the wavelength of a wave but maintaining it’s velocity will
- a) Halve the frequency
- b) Double the frequency
- c) Not affect the frequency
- d) Reduce the frequency by 2
Sound Engineering
If two identical waves have a phase difference of 180 degrees, they are said to be:
- a) Half-matched
- b) Perfectly out of phase
- c) Perfectly separated
- d) Reinforcing each other
Question 5
If two waves are perfectly in phase what will be the result of their combination:
- a) The total amplitude will be zero
- b) The total amplitude will be the same as the individual amplitudes
- c) The total wavelength will double
- d) The total amplitude will be the sum of the individual amplitudes
Signal Processors
An effect created by combining a signal with short, modulated delay with the same undelayed signal inducing a series of sweeping phase cancellations is:
a) reverb
b) flanging
c) phasing
d) chorusing
Signal Processors
The threshold of a noise gate sets the level:
a) at which the side chain is attenuated
b) below which the signal is amplified
c) above which gain reduction takes place
d) below which gain reduction takes place
Signal Processors
For compression to commence at 0 VU on a professional piece of equipment you would set the threshold at:
a) 0 dBu
b) +8 dBu
c) -4 dBu
d) +4 dBu
Signal Processors
A compressor has the threshold set at +5 dB and a 2:1 ratio. An input signal of +15 dB would be output at:
a) +5 dB
b) +15 dB
c) +10 dB
d) 0 dB
Signal Processors
The threshold setting on a compressor defines the level:
a) above which gain reduction takes place
b) below which gain reduction takes place
c) above which noise is reduced
d) below which expansion takes place
Signal Processors
If you use a compression ratio of 8:1, set your threshold at +4 dBu (O VU) and apply a signal of +20 dBu, what will be the output level?
a) O VU
b) +2 dBu
c) +6 dBu
d) +8 dBu
Signal Processors
In a typical limiting situation you would:
a) set threshold so that the programme is always subject to gain reduction and use a low ratio
b) set threshold so that only peaks are subject to gain reduction and use a low ratio
c) set threshold so that programme is always subject to gain reduction with a high ratio
d) set threshold so that only peaks are subject to gain reduction and use a high ratio
Signal Processors
The release time on a compressor:
a) is useless if signals never drop below threshold
b) determines how quickly gain reduction commences
c) determines how much gain reduction occurs
d) helps maintain an even dynamic range over the entire range
Signal Processors
A broadband de-esser:
a) filters the presence range from the program
b) compresses the presence range
c) compresses the program when the presence range exceeds a threshold
d) compresses the presence range when the program exceeds a threshold
Signal Processors
A downward expander has an input signal that ranges from -10 dB to +10 dB. The threshold of expansion is set at 0 dB and the ratio is 1:4.5, what would the output dynamic range equal?
a) 45 dB
b) 50 dB
c) 55 dB
d) 65 dB
