Sound and Image Processing Quiz

What is amplitude in a sound wave?

• The number of sound waves per second

• The height of the wave indicating loudness

• The direction of the wave

• The time between two wave crests

What does ‘sampling’ mean in sound processing?

• Removing parts of a sound wave

• Storing the wave as it is

• Measuring the amplitude at regular intervals

• Increasing the volume of sound

What is sampling resolution?

• Number of samples taken per second

• Number of audio tracks

• Number of bits used per sample

• Length of the audio clip

What is meant by 'analogue sound'?

• A sound made by a computer

• A sound that changes in steps

• A continuously varying sound wave

• A repeated sound pattern

What does the term 'frequency' refer to in a sound wave?

• The height of the wave

• The brightness of sound

• The number of vibrations per second

• The length of the song

What is an analogue to digital converter (ADC)?

• A device that increases sound quality

• A device that adds effects to music

• A device that compresses sound

• A device that converts analogue signals into digital form

What does colour depth mean in bitmap images?

• The sharpness of an image

• The number of pixels used

• The number of bits used to represent each colour

• The size of the image file

What is meant by image resolution?

• The number of colours in the image

• The amount of memory the image uses

• The number of pixels in an image

• The brightness of the image

What is a pixel?

• A unit of digital sound

• The smallest unit of a digital image

• A data format for storing video

• A type of printer

What does sampling rate refer to?

• Number of bits per pixel

• Number of colours per image

• Number of samples taken per second

• Number of images in a video