WorksheetsSound Representation
Total questions: 12
Worksheet time: 6mins
What is the name of the process of capturing sound and converting it into digital form?
(a)
What is the amplitude of a sound wave?
How loud it is
How fast it travels
How much it changes
How easy it is to record
What is sampling?
The number of bits used to represent the sound
Turning a microphone on and off to only record sound at certain times
Taking measurements of a wave at regular intervals
Combining two sound waves into one
What is sample rate?
The number of bits used for a sample
How many times a sound wave goes up and down
How fast a sound wave moves
How many samples you take each second
What is sample rate measured in?
bits
Hertz
Kbps
Decibels
If the sample rate and sample resolution are increased, what happens to the sound file?
Quality goes up. Size of the file goes up.
Quality goes down. Size of the file goes down.
Quality goes down. Size of the file goes up.
Quality goes up. Size of the file goes down.
What things make a sound recording poor quality? (Tick all that apply)
Not enough bits to record the height of the wave accurately
Not enough samples taken each second
Not enough waves getting to the microphone
Not enough seconds in each sample
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
