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Edexcel A Level Music Technology > Compression > Flashcards

Flashcards in Compression Deck (9)
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1

What is a compressor?

An automated method for reducing the dynamic range of music

2

What is noisegate?

An extreme expander
• high ratio - reduction of low level noise to silence
• used with drums to cut out the bleed from the rest of the drum kit

3

What is the threshold?

The pre-set point at which, ONCE PASSED, a compressor or gate starts working, e.g. 50 dB

5

What is the ratio?

The amount the signal is reduced by once the threshold has been passed.

6

What is the attack?

The time taken for the compressor to act after the threshold has been passed.

8

What is the release?

The time it takes for the compressor to STOP reducing the signal after the volume falls below the threshold again.

9

What can be used to boost the whole signal after the dynamic range has been reduced?

Output/make-up gain

10

What is a limiter and what are some key features of one?

A limiter is a compressor with extreme settings.
• sharply cuts off once it reaches the threshold
• extremely short attack & release
• very high ratio (15:1 +)
• mostly used for ear & equipment protection

13

What is an expander and what is it user for?

Opposite of a compressor- REDUCES signal levels below set threshold, expanding the dynamic range
• commonly used as a noise reduced for vocalists to get rid of background noise when they're not singing