Yamaha DME32, Руководство пользователя, Страница: 142 / 296

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Chapter 8—Component Guide Part I
DME32—Owner’s Manual
input signal level. A 45-degree line means that the input signal level equals the output
signal level, in other words, the Expander is having no effect. The output meter displays
the level of the output signal.
SIDECHAIN —When SIDECHAIN is off, the Expander is triggered by the input signal.
On the Stereo Expander, the trigger signal is derived by mixing the signals from both
inputs, so the higher of the two input signals will activate the Expander. When
SIDECHAIN is on, the Expander is triggered by the signal connected to the sidechain
input.
THRESHOLD —This determines the level of the trigger signal required to activate the
Expander. Trigger signals above the threshold cause the Expander to pass the input sig-
nal through unaffected. Trigger signals below the threshold level cause the Expander to
expand the input signal by the amount specified using the Ratio parameter.
RATIO —This determines the amount of expansion. That is, the change in output sig-
nal level relative to the change in trigger signal level. For a 2:1 ratio, for example, a 5 dB
change in trigger level (below the threshold) results in a 10 dB change in output level.
For a 5:1 ratio, a 2 dB change in trigger level (below the threshold) results in a 10 dB
change in output level. With a Ratio setting of Infinity:1, the Expander functions just
like a gate.
KNEE —This determines how expansion is applied at the threshold point. When set to
hard, expansion at the specified ratio is applied as soon as the trigger signal level falls
below the specified threshold. For knee settings from 1 to 5 (5 being the softest), how-
ever, expansion is applied gradually before the trigger falls below the specified thresh-
old, creating a more natural sound.
Parameter Range Description
MUTE ON/OFF Mutes the output
ON/OFF ON/OFF Turns the component on and off
SIDECHAIN ON/OFF Selects the sidechain input as the trigger source
THRESHOLD –54 dB to 0 dB Adjusts the threshold level
RATIO 1:1 to Infinity:1 Adjusts the expander ratio
KNEE HARD, 1, 2, 3, 4, 5 Adjusts the Expander’s “hardness”
ATTACK 0 ms–120 ms Adjusts the attack time
RELEASE
1
1. 5 ms–42.3 sec (fs = 48 kHz), 6 ms–46.0 sec (fs = 44.1 kHz)
Adjusts the release time
GAIN 0.0 dB to +18.0 dB Adjusts the output gain
–70
–60
–50
–40
–30
–20
–10
0
+10
+20
–70 –60 –50 –40 –30 –20 –10 0 +10 +20
Input Level (dB)
Output Level (dB)
Threshold = –10dB
Knee = hard
Expansion ratio = 2:1
–70
–60
–50
–40
–30
–20
–10
0
+10
+20
–70 –60 –50 –40 –30 –20 –10 0 +10 +20
Input Level (dB)
Output Level (dB)
Threshold = –20dB
Knee = 5
Expansion ratio = 2:1