COMP1 - Sound

Question 1

Analogue Data

Answer 1

Data that varies in a continuous manner - as a wave.

Question 2

Digital Data

Answer 2

Data that takes form of discrete values - either on or off.

Question 3

Nyquist’s Theorem

Answer 3

Sample at a frequency at least twice the rate of the highest frequency in the sampled signal.

Question 4

Sampling Resolution

Answer 4

Number of bits used to code each sample.

Question 5

Sampling Rate

Answer 5

Samples per second (Hz).

Question 6

Pulse Code Manipulation

Answer 6

Used to digitally represent sampled analogue signals.

Question 7

Quantization

Answer 7

Difference between original amplitude and its sampled value.

Question 8

MIDI

Answer 8

Music Instrument Digital Interface - used for controlling devices and represents sounds made by an instrument.

Question 9

Synthesised Sound

Answer 9

Uses digital means to generate audio signals resembling instrument sounds.

Question 10

Essential Software in the Main Memory for recoding

Answer 10

1) Sound Recorder

2) Operating System