Sound - GCSE OCR

What is the process of converting sound into digital form called?

• Sampling

• Amplifying

• Modulating

• Filtering

How can a short sound file be represented in digital form?

• In binary

• In hexadecimal

• In decimal

• In octal

What term describes the number of samples taken per second in a sound file?

• Sample rate

• Bit depth

• Frequency

• Amplitude

What does bit depth refer to in digital sound?

• The number of bits used to represent each sample

• The number of samples per second

• The frequency of the sound

• The amplitude of the sound

What does a computer use to represent data?

• Binary 1s and 0s

• Decimal numbers

• Hexadecimal codes

• Morse code

What type of signals are analogue sound signals?

• Continuous

• Discrete

• Random

• Intermittent

What is the purpose of converting sounds into a digital form?

• To store and process by a computer

• To make sounds louder

• To change the pitch of sounds

• To reduce noise

What is the function of a Digital to Audio Converter (DAC)?

• Converts digital signals to outputs

• Converts inputs to digital signals

• Amplifies digital signals

• Reduces digital noise

What is a sound sample?

• A measurement of frequency of a sound wave at a given time

• A measurement of amplitude of a sound wave at a given time

• A measurement of wavelength of a sound wave at a given time

• A measurement of speed of a sound wave at a given time

In what unit is the sample rate measured?

• Decibels (dB)

• Watts (W)

• Hertz (Hz)

• Amperes (A)