Analogue & Digital

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.

ALL sounds are caused by 

• the vibration of objects or materials
• sudden changes in temperature
• air currents
• electrical currents in the air

Digital soundwaves can be easily interpreted by computers

• True

• False

Analogue signals can vary in amplitude or frequency

• True

• False

A continuous sound signal

• Analogue
• Digital

The height of a sound wave is called its frequency.

• True
• False

What piece of hardware would you use to input sound into a computer? (1-3)

• Speaker
• Analogue to digital converter
• Microphone
• Digital to analogue converter

The amplitude of a sound wave is....

• How high the wave is from the crest or trough
• The frequency at which it is sampled
• The speed at which it travels through air