Operating Manual for Digital Sound Processor (DSP) V3.0
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(b) Set up parameters for the feedback inhibition module. Also, decrease the panic threshold to
reduce the feedback level.
(c) Open all microphones, and slowly increase system gain until the feedback occurs. Stop
increasing system gain when the feedback occurs.
(
d)
Wait for the feedback inhibition module to take effect; after the feedback disappears,
continue to increase gain.
(e)
R
epeat the operation until the system reaches the required gain or until all filters are fully
distributed
(f)
C
hange the panic threshold to a maximum level just higher than the expected non-feedback
signal.
A
t this time, if needed, you may set Fixed mode for each filter or save the dynamic status to deal
with possible feedback during the performance period. Additionally, you may copy the filter to the
notching filter module (such as equalizer). In this way, you may add more filter capacity.
If a speaker is included among the devices used, it is recommended to use a compressor/limiter
module for additional protection. You may set an appropriate limiter to make sure that the speaker
will not get damaged even if all notching filters are used up or the feedback inhibitor cannot
effectively control the feedback, such as in the case of excessive system gain.
3.4.8 Noise Gate
Noise gate: the main purpose of a noise gate is to attenuate signals below the threshold, and this
attenuated signal is usually noise.
Threshold: greater than pass, less than attenuation
Depth: attenuation, which determines how much the signal below the threshold is attenuated.
Start time: start time refers to the speed at which the noise door opens.
Release time: the release time is opposite to the start time, which refers to the speed of the noise
door closing.
Keep time: keep time is like this, when the signal is below the closing threshold, normally, the
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