Multimedia Systems

Provide the reasons behind the usage of compression techniques for continuous media  as it require ___________ and __________ when compared to uncompressed data.

• high bandwidth, high storage space

• less bandwidth, low storage space

• high efficiency,less bandwidth

• consume more time,high bandwidth

The most important compression techniques are________.

• JPEG

• H.263

• MPEG

• all the mentioned choices

______________ is an usecase that belongs to dialogue mode application.

• videoconferencing

• picture transmission

• both a and b

• audiovisual information system

_____________ is the requirement for dialogue mode applications.

• end to end delay not to exceed 150ms

• Fast forward  and fast rewind

• random access limit to less than half a second

• decompression of continuous media without interpreting preceding  data

    _______ is  a lossy process.

• source coding

• entropy coding

• hybrid coding

• none

  __________ preserves sequence of digital data values and their semantics are ignored.

• source coding

• entropy coding

• hybrid coding

• none

_________ are defined  as the maxima in the voice spectrum.

• boundaries

• extrema

• formants

• deviations

________  replaces the repeated byte sequences with number of occurrences to reduce the size of data blocks.

• zero suppression

• vector quantization

• pattern substitution

• run length coding

What will happen once a file is compressed?

• it has a better quality

• it takes up less space for storage

• it cannot be delivered to the client more quickly

• none

Compression ratio is the ratio of ___________.

• the original file size to the size of the compressed file

• the number of pixels in a frame of the original size to those in a frame of the compressed file

•  compressed file size to the original file size

• none