Sound

Sound

9th Grade

14 Qs

quiz-placeholder

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Sound

Sound

Assessment

Quiz

Computers

9th Grade

Hard

Created by

Jo Ali

FREE Resource

14 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An audio file has 44,100 samples per second, bit depth of 24-bits and a channel. Estimate the file size for one second?

129.2 bits

129.2 bytes

129.2 KiB

129.2 MiB

Answer explanation

Media Image

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Estimate the file size of a 5-second audio file with 44,100 samples per second, bit depth of 24-bits and a channel.

646 bits

646 bytes

646 KiB

646 MiB

Answer explanation

Media Image

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why are sound signals sampled?

To play sound via speakers or headphones.

To analyse sound quality

To compress sound files

To store in a computer

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is uncompressed file formats?

MP3

WAV

Ogg Vorbis

All of the above

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is bit depth?

Number of bits available for each sample

Number of bits of data used to store data sampled every second.

Number of samples in a second.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following represents the calculation for estimating size of a sound file?

File size (sound) = Sampling rate (Hz) x bit depth (bits) x duration (second) x channels

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is analogue sound?

A sound signal after sampling.

A continuously varying signal.

A sound signal with different pitches.

A signal that can take only certain values.

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