This set of Video Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Surround Sound Stereo Receiver”.
1. Which device is used to separate sound outputs picked up by separate microphones in a TV receiver or a DVD player in surround sound stereo receiver?
a) Decoder
b) Encoder
c) Multiplexer
d) Transformer
View Answer
Explanation: Surround sound is an extension of stereo sound. The two stereo sound signals that are obtained due to the audio section of a TV receiver or a DVD player are processed to create different sound outputs as picked up by separate microphones. Decoder is used for carrying out the separation. It has circuits to distinguish between sounds of relative delay times due to different pick-up points.
2. Which is one of the main components of any home theatre system?
a) Satellite Off-Air tuners
b) Digital video recorder
c) Surround sound stereo system
d) DLP rear projection
View Answer
Explanation: A surround sound stereo receiver act as a connection hub for a huge variety of audio/video sources. Nowadays receivers can connect anything from over-the-air radio broadcasts to the smartphone in the pocket. One of the main components of any home theatre is surround sound stereo receiver.
3. In which year Dolby laboratories introduced Dolby surround sound?
a) 1965
b) 1956
c) 1982
d) 1996
View Answer
Explanation: In 1982, Dolby Laboratories introduced Dolby surround that has surround sound signal onto a stereo source through a process called matrix encoding. After few years, Dolby came with Pro-logic surround and since then many advanced surround sound systems are introduced to the point where as many as 11 speakers can be used to enable listeners experience a truly natural sound.
4. How many ordinary and effects channel are there in a stereo receiver with Dolby digital decoder?
a) 5, 1
b) 3, 5
c) 2, 6
d) 4, 5
View Answer
Explanation: The most popular digital surround sound format is the Dolby digital format. For having this format the stereo receiver must have Dolby digital decoder. It is also called as 5.1 format in which 5 indicate five ‘ordinary’ channels and 1 indicates one ‘effects’ channel. The speakers are positioned in such a way that more precise sound can be heard to the listener i.e. right and left of the listener.
5. When DVDs came out in 1999, Dolby Digital was the default surround format.
a) True
b) False
View Answer
Explanation: The above statement is false. When DVDs came out in 1997, Dolby Digital was the default surround format. Even now, Dolby digital 5.1 is considered by many to be surrounding sound standard and is included on most Blu-ray discs.
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