22
The HUSH
®
function is accessible in all presets - regardless of the configuration currently
recalled.
HUSH is a patented single-ended noise reduction system. The HUSH system contained in
the UTOPIA G100, though modeled after the latest analog HUSH design, is a fully digital imple-
mentation achieved through Digital Signal Processing (DSP).
The low level expander of the HUSH system operates like an electronic volume control. The
analog version of the HUSH utilizes a voltage-controlled amplifier (VCA) circuit which can control
the gain between the input and the output from unity to 30, 40 or even 50(dB) of gain reduction.
When the input signal is above the user preset threshold point, the VCA circuit remains at unity
gain. (This means that the amplitude of the output signal will be equal to that of the input signal.)
As the input signal level drops below the user preset threshold point, downward expansion
begins. At this point the expander acts like an electronic volume control and gradually begins to
decrease the output signal level relative to the input signal level. As the input signal drops further
below the threshold point, downward expansion increases. A drop in the input level by 20(dB)
would cause the output level to drop approximately 40(dB) (i.e., 20(dB) of gain reduction). In
the absence of any input signal, the expander will reduce the gain so that the noise floor be-
comes inaudible.
HUSH
®
Function
The HUSH I/O parameter simply determines whether the HUSH® circuit
is active for the current preset.
The HUSH THRESHOLD parameter determines the level at which
downward expansion begins. For example, if the HUSH THRESHOLD
was set at -20(dB) and the input signal dropped below -20(dB),
downward expansion would begin.
HUSH I/O
HUSH THRESH
The HUSH circuit is located after the A/D converter in the signal chain to reduce any noise
generated from the guitar and the A/D converter. This ensures a quiet input signal to the preamp
section. Because the preamp section of the UTOPIA G100 is digital, it is virtually noise-free (even
for the high-gain channels). Therefore, a quiet input signal to the preamp will result in a quiet output
signal.
The PARAMETER SELECT knob will allow you to access these Hush parameters:
Summary of Contents for UTOPIA G100
Page 1: ...1 ...
Page 6: ...6 2 Quick Reference ...
Page 8: ...8 3 UTOPIAG100 Top and Back Panels ...
Page 11: ...11 4 Connections Standard Connection with a Guitar Amplifier ...
Page 12: ...12 Connection to a Stereo Power Amplifier 4 Connections continued ...
Page 13: ...13 Connection in Stereo to Two Guitar Amplifiers 4 Connections continued ...
Page 14: ...14 Connection to a PA System 4 Connections continued ...
Page 15: ...15 Connection to a Computer 4 Connections continued ...
Page 16: ...16 Connection to a Recording Workstation 4 Connections continued ...
Page 36: ...36 PRE CHR DL REV Configuration Preamp Chorus Delay Reverb 6 UTOPIAG100 Configurations ...
Page 39: ...39 PRE FLA DL REV Configuration Preamp Flanger Delay Reverb ...
Page 42: ...42 PRE TRE DL REV Configuration Preamp Tremolo Delay Reverb ...
Page 45: ...45 PRE PSH DL REV Configuration Preamp Pitch Shift Delay Reverb ...
Page 48: ...48 WA PRE DL REV Configuration Wah Wah Preamp Delay Reverb ...
Page 51: ...51 PHA PRE DL REV Configuration Phaser Preamp Delay Reverb ...
Page 70: ...70 ...
Page 71: ...71 ...
