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Data representation - Sound

Total questions: 12

Worksheet time: 6mins

Name

Class

Date

What is bit depth?

The number of bits used to store each sample

The number of times a wave is sampled

How loud a sound is

How quiet a sound is

What is the sample rate?

The number of times a sound wave is sampled per second

The number of bits used to store each sample

How loud a sound is

The size of the sound wave

What is sample rate measure in?

Bits

Hertz

amps

What is used to convert a sound wave in to a digital format?

A sound wave converter

A router

An amplitude to digital converter

Analogue to digital converter

What is the formula for calculating the size of a sound file?

size = rate * bits * seconds

size = rate * bits * minutes

size = amplitude * bits * seconds

size = sample * frequency * bits

What is amplitude?

Number of samples taken

The number of bits per sample

The height of the sound wave

The pitch

The most common sampling rate for sound files is 44.1 khz.

True

False

Identify a false statement:

Higher bit rates usually improve the sound quality and result in smaller file size.

Higher bit rates usually improve the sound quality but result in larger file size.

To record a sound into binary format, ADC will be applied rather than DAC.

How is sound caused?

By playing it through a hi-fi with speakers

Vibrations travelling through air, water or metal.

10.

What is the difference between analogue and digital data?

Analogue is continuous data, whereas digital signals have two values, 0 and 1.

Analogue has two values 0 and 1, whereas digital is continuous data.

11.

A continuously changing wave such as natural sound.

Analogue

Digital

Binary

Fluid

12.

If you increase the bit depth of an audio file then you increase the quality?

true

false

Reset

Data representation - Sound

Total questions: 12

Worksheet time: 6mins

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