Sound and Audio MCQ Quiz - Objective Question with Answer for Sound and Audio - Download Free PDF

The correct answer is option 4.

Important PointsMP3, in full MPEG-1 Audio Layer 3, a data compression format for encoding digital audio, most commonly music.

Key Points

•  PA (Public Address) system is an electroacoustic system, in which sound is first converted into electrical signals by a microphone.
• The electrical audio signals are amplified, processed, and applied to another transducer the loudspeaker, which converts the audio signals into sound waves.

Additional Information

• A public address system (or PA system) is an electronic system comprising microphones, amplifiers, loudspeakers, and related equipment. It increases the apparent volume (loudness) of a human voice, musical instrument, or other acoustic sound source or recorded sound or music.
• PA systems are used in any public venue that requires that an announcer, performer, etc. be sufficiently audible at a distance or over a large area.
• Typical applications include sports stadiums, public transportation vehicles and facilities, and live or recorded music venues and events.
• A PA system may include multiple microphones or other sound sources, a mixing console to combine and modify multiple sources, and multiple amplifiers and loudspeakers for louder volume or wider distribution.

Key Points

 Surround sound is an extension of stereo sound.

The two stereo sound signals obtained from the audio section of a TV receiver or a DVD player are processed to create different sound outputs as picked up by separate microphones.

A 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.

Additional Information Today, there are two primary sources for home theater surround-sound formats -- Dolby Laboratories and Digital Theater Systems.

• DTS encoding uses less compression than Dolby encoding. This means that the DTS sound is more precise and sharper.
• However, DTS encoding is also less commonly used on DVDs and television broadcasts.
• Most DVDs have some Dolby sound options, and some also offer choices for DTS sound.

Concept:

Streaming: After the downloading process has begun, a user can still listen to (or watch) the content if it is being streamed.

Explanation:

The first category is called streaming stored audio/video, and it involves compressing the files before storing them on a server.

The data are downloaded into a client's computer via the internet. On-demand music and video is another name for this service in some circles.

Hence, Streaming stored audio/video refers to on-demand requests for compressed audio/video files.

Concept:

Streaming: After the downloading process has begun, a user can still listen to (or watch) the content if it is being streamed.

Explanation:

The first category is called streaming stored audio/video, and it involves compressing the files before storing them on a server.

The data are downloaded into a client's computer via the internet. On-demand music and video is another name for this service in some circles.

Hence, Streaming stored audio/video refers to on-demand requests for compressed audio/video files.

Key Points

•  PA (Public Address) system is an electroacoustic system, in which sound is first converted into electrical signals by a microphone.
• The electrical audio signals are amplified, processed, and applied to another transducer the loudspeaker, which converts the audio signals into sound waves.

Additional Information

• A public address system (or PA system) is an electronic system comprising microphones, amplifiers, loudspeakers, and related equipment. It increases the apparent volume (loudness) of a human voice, musical instrument, or other acoustic sound source or recorded sound or music.
• PA systems are used in any public venue that requires that an announcer, performer, etc. be sufficiently audible at a distance or over a large area.
• Typical applications include sports stadiums, public transportation vehicles and facilities, and live or recorded music venues and events.
• A PA system may include multiple microphones or other sound sources, a mixing console to combine and modify multiple sources, and multiple amplifiers and loudspeakers for louder volume or wider distribution.

Concept:

Streaming: After the downloading process has begun, a user can still listen to (or watch) the content if it is being streamed.

Explanation:

The first category is called streaming stored audio/video, and it involves compressing the files before storing them on a server.

The data are downloaded into a client's computer via the internet. On-demand music and video is another name for this service in some circles.

Hence, Streaming stored audio/video refers to on-demand requests for compressed audio/video files.

Key Points

 Surround sound is an extension of stereo sound.

The two stereo sound signals obtained from the audio section of a TV receiver or a DVD player are processed to create different sound outputs as picked up by separate microphones.

A 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.

Additional Information Today, there are two primary sources for home theater surround-sound formats -- Dolby Laboratories and Digital Theater Systems.

• DTS encoding uses less compression than Dolby encoding. This means that the DTS sound is more precise and sharper.
• However, DTS encoding is also less commonly used on DVDs and television broadcasts.
• Most DVDs have some Dolby sound options, and some also offer choices for DTS sound.

The correct answer is option 4.

Important PointsMP3, in full MPEG-1 Audio Layer 3, a data compression format for encoding digital audio, most commonly music.