Operating Manual for Digital Sound Processor (DSP) V3.0
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channel mute instead of auto gain and channel fader. Channels suitable for fixed volume like the
channel of background music need to keep at a fixed level without being controlled by automix. For
example, it shall keep microphone at normal open. Meanwhile, its gain will not be influenced by
automix. At this point, users may directly adjust the output of the channel in output matrix route as
well as turn off automix button of the channel. Its gain will not be adjusted and gains at other channels
will not be influenced by the signal level at the channel.
There are two groups of control parameters in automix module: main control parameters and channel
control parameters.
(1) Main control parameters
Cl
ick the bottom button to open or close automix
Gain: control main output volume of aumomix
Slope: The slope control influences the attenuation of lower level. If the slope
is higher, the attenuation of lower level channel will rise. The slope control and
the ratio control at the expander have the same working mode. It is suggested
that the value be set at or around 2.0. if it is set at 1.0, the effect equals to
closing automix at all channels. if it is set at 3.0, the action will result in larger
gain adjustment, which may bring unnatural effect. The bigger the value, the
more the channel is opened and the more the total attenuation. When the
slope is set at 2.0, ideal gain share may be realized, so it is the preferred value
in use.
Response Time: Faster response time may ensure head letters of speeches
not be cut off. Slower response time allows smooth operation. Practices show
that the best effect will be produced when response time is between 100ms
and 1000ms. The design of auto gains aims to faster microphones turning on
than turning off. Therefore, head letters of speeches will not be cut off even
the response time is 100ms. If it is set at several seconds, then there will be a
longer hold time of the response time of automixer, previous active channel
will be saved at open status in several seconds.
(2) Channel control parameters
Auto Mix: Each channel has an automix on/off button which must be
turned on for channels need to participate in automix. It may also be
closed, and then the channel will not participate in automix.
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