Operating Manual for Digital Sound Processor (DSP) V3.0
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background music from speaker, then it is possible for them to mask channels with lower priority
even the former is not used. It will get worse if the slope is higher. If the issue happened during
installation and commissioning, users may consider installing a noise gate or expander between
automixers at the highest priority channels. Meanwhile, they shall set threshold at the level that it
won’t be opened by the noise gate or expander.
Also add a threshold type automatic mixer option:
The threshold automatic mixer is based on the noise gate development, each channel has a noise
gate, which is either open or closed.
Gain: the overall output gain of the automatic mixer.
Hold time: the Hold function can adjust the length of time the channel remains open after the
speaker stops speaking. This function ensures that a brief pause between words and phrases does
not cause the channel to close.
off gain： When the sound cannot pass through the threshold, the set value of off gain will be added
to the sound signal.
Sensitivity: sensitivity control, when the channel above the adaptive noise threshold must be
conducted on the channel. If the value of this setting is increased, the channel is easily switched on
at very quiet noise.
NOM Atten：NOM attenuation push can affect the magnitude of attenuation of all channels when
more microphones are opened. This parameter reflects the attenuation when two microphones are
switched on, and the additional attenuation that will increase after each double number of open
microphones. When set to 3 dB, for example, opening two microphones attenuates 3 dB,6 when
opening four dB,9 when opening eight By the same token, the number of microphones turned on
doubles, and the output attenuation increases by 3 dB.
NOM Limit： set the maximum number of open microphones
Noise threshold: greater than this value open, less than this value attenuation
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