Quiz 8 Speakers Headphones Module 9

The symbol for impedance is

• I

• R

• Z

• O

Generally speaking professional microphones are low impedance.

• true

• false

Impedance is measured in the same units as;

• Hertz

• Voltage

• Current

• Resistance

Which of these types of microphones require phantom power?

• Dynamic

• Condenser

• Cardioid

• Parabolic

The three to one rule means that the subject (person) must be three times as far from their microphone as they are from another subject (person).

• true

• false

Which of the following uses a shockmount system for the microphone?

• Holding the mic in your hand

  
  

• Blimp/Zepplin on a boom pole

  
  

• Lav mic clipped to clothing

  
  

• Microphone clip on a stand

When you are planning the positions of two people on set, each  wearing a lav mic, you should observe the three to one rule. This means that;

• Person 1 must be three times as far from their lav microphone as they are from person 2

  
  

• Person 1 must be three times as far from person 2 as they are from their lav microphone.

  
  

• Person 2 must have their lav microphone 3 times further from their mouth as person 1 does.

A speaker is basically a linear ____________

• Transformer

• Slide

• Motor

  
  

• Generator

Noise reduction works by recording the ambient sound containing noise and then processing that sound. What principal is used to reduce the noise?

• Phase split

  
  

• Phase oscillation

  
  

• Phase cancellation

  
  

• Phase compensation

When an audio wave peak is added to an audio wave trough, the resulting is increased amplitude of the resulting combined audio wave.

• true

• false