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The expander will add dynamic range to the input according to needs of the user. When the
signal input is less than “threshold”, the expander amplifies and outputs the signal input by
the “ratio” set. Level output = threshold–(threshold–level input)/ratio; when the signal
input is more than “threshold”, it is output by 1:1. Level output = level input, when the ratio
is adjusted by the maximum value (∞), the expander becomes a noise gate.
Bypass:
the signal input is bypassed and the signal will go directly to the next processing
module. If it is pressed the expander will not be enabled; otherwise, the expander will be
enabled.
Ratio:
the dB of dynamically changed signal input of the expander/the dB of dynamically
changed signal output of the expander.
Attack time:
less than the time needed of the signal input of “threshold” of the expander
from the entering into the expanding status to output by the setting of expanding ratio.
Release time:
the time needed for the signal input returning to the original non-expanding
status from the expanding status.
All reset:
all parameters are reset to the factory settings.
7.2.2.7 Speaker Manager
There are function modules, such as parameter equalizer, frequency divider, delayer and