Bedienungsanleitung Yamaha 01X (Seite 123 von 156) (Englisch)

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Before UsingBasics SectionAppendix Getting StartedReference

01X Owner’s Manual

123

Parameter Lists

● Expander (EXP) parameters:

Threshold (THRESH) determines the level of input signal

required to trigger the expander. Signals above the threshold

pass through unaffected. Signals at and below the threshold

level are attenuated by the amount speciﬁed using the Ratio

parameter.

Ratio controls the amount of expansion — the change in output

signal level relative to change in input signal level. With a 2:1

ratio, for example, a 5 dB change in input level (below the

threshold) results in a 10 dB change in output level. For a 5:1

ratio, a 2 dB change in input level (below the threshold) results in

a 10 dB change in output level.

Attack controls how soon the signal is expanded once the

expander has been triggered. With a fast attack time, the signal

is expanded almost immediately. With a slow attack time, the ini-

tial transient of a sound passes through unaffected.

Release determines how soon the expander returns to its nor-

mal gain once the trigger signal level drops below the threshold.

Out Gain (GAIN) sets the expander’s output signal level.

Knee sets the transition of the signal at the threshold. With a

hard knee, the transition between unexpanded and expanded

signal is immediate. With the softest knee, knee5, the transition

starts before the signal reaches the threshold and gradually

ends above the threshold.

● CompanderH (CPH) and CompanderS (CPS)

parameters:

Threshold (THRESH) determines the level of input signal

required to trigger the compander. Signals above the threshold

pass through unaffected. Signals at and below the threshold

level are attenuated by the amount speciﬁed using the Ratio

parameter.

Ratio controls the amount of companding — the change in out-

put signal level relative to change in input signal level. With a 2:1

ratio, for example, a 10 dB change in input level (above the

threshold) results in a 5 dB change in output level. The hard

compander (CPH) has a ﬁxed ratio of 5:1 for expansion and the

soft compander (CPS) has a ﬁxed ratio of 1.5:1 for expansion.

Attack controls how soon the signal is companded once the

compander has been triggered. With a fast attack time, the sig-

nal is companded almost immediately. With a slow attack time,

the initial transient of a sound passes through unaffected.

Release determines how soon the compander returns to its nor-

mal gain once the trigger signal level drops below the threshold.

Out Gain (GAIN) sets the compander’s output signal level.

Since the gain or level of the sound increases depending on the

Threshold and Ratio settings, use this to adjust the overall

sound output.

Width is used to determine the distance, in decibels, between

the expander and the compressor. With a width of 90 dB, the

expander is effectively switched off and the compander is simply

a compressor-limiter. With a smaller width (30 dB) and a high

threshold (0 dB), the compander is an expander-compressor-

limiter.

Compander

-70

-60

-50

-40

-30

-20

-10

+10

+20

-70 -60 -50 -40 -30 -20 -10 0 +10 +20

Input Level

Output Level

Threshold

Width

A compander is a compressor-expander — a combination of signal compres-

sion and expansion. The compander attenuates the input signal above the

threshold as well as the level below the width. For very dynamic material, this

program allows you to retain the dynamic range without having to be concerned

with excessive output signal levels and clipping. This functions as a limiter when

the input level exceeds 0 dB.

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