Dynamic Range Compression - Types

Types

Upward compression

Downward compression reduces loud sounds over a certain threshold while quiet sounds remain unaffected. Upward compression increases the loudness of sounds below a threshold while leaving louder passages unchanged. Both downward and upward compression reduce the dynamic range of an audio signal.

An expander performs the opposite function, increasing the dynamic range of the audio signal. Expanders are generally used to make quiet sounds even quieter by reducing the level of an audio signal that falls below a set threshold level. A noise gate is a type of expander.

Read more about this topic:  Dynamic Range Compression

Famous quotes containing the word types:

    “He types his laboured column—weary drudge!
    Senile fudge and solemn:
    Spare, editor, to condemn
    These dry leaves of his autumn.”
    —Robertson Davies (b. 1913)

    “He’s one of those know-it-all types that, if you flatter the wig off him, he chatter like a goony bird at mating time.”
    —Michael Blankfort. Lewis Milestone. Johnson (Reginald Gardner)

    “Our major universities are now stuck with an army of pedestrian, toadying careerists, Fifties types who wave around Sixties banners to conceal their record of ruthless, beaverlike tunneling to the top.”
    —Camille Paglia (b. 1947)