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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
 

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
 

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
 

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
 

Audio Engineering Exam Questions

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
 

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

 
 
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