This set of Audio Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Audio Compression, Disk-Based Recording and Digital Audio Broadcasting”.
1. What is the full form of MPEG?
a) Motion picture experts group
b) Moving processor experts group
c) Motion phase experts gathering
d) Moving picture experts group
View Answer
Explanation: The compression standard which is used in most of audio and video systems is MPEG. MPEG (motion picture experts group) is a multimedia standard with specifications for coding, compression and transmission of audio, video and data streams. MPEG audio is a standard for compression and decompression of digital audio.
2. What type of coding is used for weakness of human ears in audio compression?
a) Static
b) Dynamic
c) Perpetual
d) Disk based
View Answer
Explanation: The coding technique used in MPEG audio standard (known as perpetual coding) takes advantage of this perpetual weakness of human ears (psychoacoustic phenomenon). In perpetual coding, the audio spectrum is divided into a set of narrow frequency bands, to reflect the frequency selectivity of human hearing.
3. Which is the ideal medium for editing like cut, copy and paste in disk based recording?
a) Blu-ray
b) Variable method
c) Audio compression
d) Magnetic disk drive
View Answer
Explanation: The ideal medium for editing is a magnetic disk drive. It is evolved from much perfection from the computer industry. It allows quick random access to data. It creates the perfect medium for editing such as cut, copy, paste, read and write data etc.
4. In which type of applications can hard disk based drives are useful?
a) Electronic news gathering
b) Timing errors
c) Low cost
d) High data stream
View Answer
Explanation: The hard disk drive provides periodic data transfer because the head should be repositioned. It clearly depicts that recording time and quality will not compete with full bandwidth tape-based devices. But, this kind of direct acquisition devices results in time saving which are very useful in applications like electronic news-gathering.
5. Which audio storage device is faster in retrieving audio in disk based recording?
a) USB flash drive
b) Magnetic tape
c) Solid state drive
d) Blu-ray disk
View Answer
Explanation: Development of the optical disk was activated by the low cost LASERS. These are available in different types. Some are used for only recording whereas some are erasable and some are removable and can be used as interchangeable media. Alto retrieving is fast in magnetic tape compared to optical disk, optical disks are removable and so can act as interchangeable media.
6. Although digital broadcasting is used for many years, now analog broadcasting is gaining popularity.
a) True
b) False
View Answer
Explanation: Although analog broadcasting is used for many years, now digital broadcasting is gaining popularity. The main reason behind this is that it offers many advantages. It is also known as digital radio or high definition radio. As compared to analog broadcasting we can do compression, digital modulation and apply error correction techniques which results in good and acceptable sound quality in specified bandwidth.
7. Digital audio broadcasting is more immune to noise.
a) True
b) False
View Answer
Explanation: In digital audio broadcasting the multiple receptions are also eliminated. This means that we can easily use Omni directional antennas which are essential for mobile reception. Digital audio broadcasting is more immune to noise also.
Sanfoundry Global Education & Learning Series – Audio Engineering.
To practice all areas of Audio Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers.
