This set of Audio Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Special Microphones”.
1. A small microphone suspended on the upper front part of the body by means of a chord around the neck is called shot-gun microphone.
a) True
b) False
View Answer
Explanation: The above statement is false. A small microphone suspended on the upper front part of the body by means of a chord around the neck is called lavalier microphone. It is a small moving coil type microphone specifically designed to work as lavalier microphone.
2. Which of the following microphone is used for lecture delivery in the class/hall?
a) Lavalier
b) Noise cancelling
c) Shot-gun type
d) Fiber optical
View Answer
Explanation: Lavalier microphone is the small moving coil type microphone. Lavalier microphone has applicability where mobility is necessary for example, for a lecture delivery in the class/hall in order to allow hands-free operations.
3. Which of the following microphone is an electret type small microphone?
a) Fiber optical
b) Shot-gun type
c) Noise cancelling
d) Tie-clip
View Answer
Explanation: Tie-clip is an electret type small microphone which can be clipped on a tie, or any other convenient part of the clothing, hence named as tie-clip microphone. Principle of electret microphone is similar to principle of capacitor microphone.
4. An external amplifier made on a small chip of silicon is used inside the Tie-clip microphone.
a) True
b) False
View Answer
Explanation: Tie-clip microphone is an electret type small microphone. An external amplifier made on a small chip of silicon is used inside the microphone. Even with small amplifier and its cell, it is very light and portable.
5. Which type of microphone is used in sports for oath taking ceremony?
a) Shot-gun type
b) Noise cancelling
c) Fiber optical
d) Radio (wireless)
View Answer
Explanation: Radio (wireless) microphone is useful in sports for oath taking ceremony. Radio microphone uses a small VHF transmitter, so that cable from amplifier to microphone is not needed. The signal is received by a VHF (Very High Frequency) receiver placed at a suitable distance and then amplified and fed to the loudspeakers.
6. In which of the following microphone two matching transducing elements are used?
a) Radio (wireless)
b) Fiber optical
c) Noise cancelling
d) Shot-gun type
View Answer
Explanation: In noise cancelling microphone two matching transducing elements are used. These are mounted a few inches apart in the microphone encasing and are connected together in the opposite phase. Sound which is produced a few inches away from the microphone will actuate both transducers equally.
7. Which microphone is mounted on a long pole and operated by an audio crew member or assistant?
a) Shot-gun type
b) Fiber optical
c) Digital interface
d) Lavalier
View Answer
Explanation: Shotgun microphones get their name from their shape. This type of mic is very much favorite on movies and TV sets and is versatile enough to use in many other situations also. It is mostly mounted on a long pole and operated by an audio crew member or assistant.
8. On which microphone monitoring on headphone is very much important?
a) Lavalier
b) Digital interface
c) Shot-gun type
d) Fiber optical
View Answer
Explanation: As shotgun type of microphone are highly directional, shotgun microphones do a good job of isolating the sound you want to record as far as they are pointed in the right direction. Monitoring on headphones is very important with this type of microphone.
9. Which microphone provides interference free communication in electrically noisy channel?
a) Fiber optical
b) Shot-gun type
c) Lavalier
d) Digital interface
View Answer
Explanation: Interference free communication in electrically noisy environments is provided by the fiber optical microphone. Fiber optical microphone uses a patented optical system that converts acoustic signals directly to a modulated light intensity signal.
10. Which of the following microphones is used in highly explosive areas and nuclear plants?
a) Digital interface
b) Shot-gun type
c) Fiber optical
d) Ribbon
View Answer
Explanation: Fiber optic technology overcomes limitations of traditional electrical technology for electrically noisy environments, hazardous ambient environment and secure data situations where radiated electrical signal cannot be tolerated. Applications of fiber optical microphone are in highly explosive areas, RF and electromagnetic areas and nuclear plants.
11. Which of the following microphone have an integrated circuit (IC) that replaces the JFET in a conventional in an electret condenser microphone resulting in a fully digital output of the electret microphone?
a) Ribbon
b) Fiber optical
c) Shot-gun type
d) Digital interface
View Answer
Explanation: In this modern digital world, almost every audio application will convert the input audio signal into a digital representation to further process the information. Thus, digital interface microphones have an integrated circuit (IC) that replaces the JFET (Junction Field Effect Transistor) in a conventional in an electret condenser microphone resulting in a fully digital output of the electret microphone.
Sanfoundry Global Education & Learning Series – Audio Engineering.
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