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Digital Audio 1

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Sound is made up of

a)

Compression waves

b)

Mexican waves

c)

Tranverse waves

d)

Noise waves

2.

The number of waves that pass per second is called the?

a)

Frequency

b)

Amplitude

c)

Wavelength

d)

Markov Chain

3.

The height of the wave is known as the...

a)

Amplitude

b)

Frequency

c)

Wavelength

d)

Tallitude

4.

An individual measurement of the height of a wave is called a...

a)

Sample

b)

Pixel

c)

Blob

d)

Byte

5.

The frequency of a wave affects the...

a)

Pitch

b)

Volume

c)

Quality

d)

Chances of the listener being crowned emperor of the universe

6.

The amplitude of the wave affects the...

a)

Volume

b)

Pitch

c)

Quality

d)

Amount of money you will find tonight down the back of the sofa

7.

The sampling frequency of a wave means...

a)

The number of times per second that the amplitude is measured

b)

The number of times per second that the frequency is measured

c)

The number of times per minute that the amplitude is measured

d)

The number of dogs per crocodile that the space-robots are demolished.

8.

Sampling frequency is measured in...

a)

Hertz

b)

Hurts

c)

Metres per second

d)

Herts

9.

What effect would reducing the sampling frequency have on the quality of the sound?

a)

Reduces the quality

b)

Increases the quality

c)

No effect

d)

Makes every wave sound like a crocodile

10.

This waveform is sampled at 14Hz. How many samples will there be in TWO seconds of audio

a)

13

b)

14

c)

28

d)

255