Roland VS-2000 Appendices page 53

Graphic Equalizer (10-Band Graphic Equalizer)
This Equalizer sets the boost/cut amount by each segment of the frequency divided into ten bands. In performing PA at a live, this
feature is useful to prevent howling by cutting the site-specific resonance frequency.
fig.08-57
Input A
Input B
Preventing howling
While performing PA at a live, follow the steps below to prevent howling. First, identify the site-specific resonance frequency
to cut its gain.
Controlling Channels A and B separately
Setting Link On enables simultaneous control on the 10-Band Parametric Equalizer via Channel B according to the settings
on the Channel A side.
To control Channels A and B separately, turn Link Off.
Parameter (full name)
Lnk (Link):
Link (Link Switch)
GEQA, GEQB (10-Band Graphic Equalizer): Models a 10-band graphic equalizer.
Sw (Switch)
31.2 – 16 k (Gain)
InputG (Input Gain)
Level (Output Level)
Hum Canceler
Eliminates annoying hum (or "surge" sounding "boon").
fig.08-59
Input A
Input B
Removing hum
Hum is a noise with a certain low frequency. Hum is generated mostly due to ingression of part of alternating current into signals
as alternating current is converted into direct current in the power circuit. Sets Frequency (Freq) to that according with the
frequency of the power source (50 Hz/60 Hz), and hum with that frequency and frequencies of its multiples can be removed.
Range Lo and Rage Hi can be used to specify the frequency band of hum to be removed.
Parameter (full name)
HC (Hum Canceler):
Sw (Switch)
Freq (Frequency)
Width (Width)
Depth (Depth)
Thresh (Threshold)
RangeLo (Range Low)
RangeHi (Range High)
NS (Noise Suppressor):
Sw (Switch)
Thresh (Threshold)
Release (Release)
*1: Setting to "Unlimit" means that the frequency that can be played back on this unit is the lower limit.
*2: Setting to "Unlimit" means that the frequency that can be played back on this unit is the upper limit.
Output A
10BAND EQ A
Link
10BAND EQ B
Output B
Setting Function
Makes Channel B follow the settings for Channel A.
On, Off Specifies if Channel B follows or does not follow the settings for Channel A.
On, Off Turns the parametric equalizer on or off.
-12– +12 dB Sets the boost/cut amount at the respective frequencies.
-60– +12 dB Sets the overall volume before passing through the equalizer.
-60– +12 dB Sets the overall volume after passing through the equalizer.
Noise
Hum Canceler
Suppressor
Noise
Hum Canceler
Suppressor
Setting Function
Removes hum.
On, Off Turns the hum canceler on or off.
20.0–800.0 Hz Sets the frequency of hum to be removed.
10–40% Sets the width of the filter which will remove the hum.
0–100 Sets the depth of the filter which will remove the hum.
0–100 Sets the level at which the hum is to be removed.
Unlimit, 20 - 2000 Hz Sets the lower limit of the frequency of hum to be removed.
1.0 - 20.0 kHz, Unlimit Sets the upper limit of the frequency of hum to be removed.
Mutes noise in the silent mode.
On, Off Turns the noise suppressor on or off.
0–100 Sets the level to start muting noise.
0–100 Sets the time over which the volume will drop to 0 after the noise starts being muted.
Output A
Output B
*1
*2
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