4.4.2 The fixed point of the notch filter is mainly used to capture the inherent howling point of the
sound field; the dynamic point is used for the howling point formed after the sound field changes.
When the fixed point of the notch filter is full, the captured howling point will be set as the dynamic
point. According to the actual sound field environment of the scene, you can set the corresponding
fixed point/dynamic point of the notch filter.
4.4.3 If both the notch filter and the frequency shifter are set to "Enable", the frequency shift
function will only be enabled when the fixed and dynamic points of the notch filter are full. The
frequency shift function is always enabled when the notch filter is set to "off" and the frequency
4.4.4 Parameter information
Notch On and Off: Turn this function on or off.
Reset Notch Point: Clear the detected fixed and dynamic points.
Fixed Point: The maximum number of fixed notch points of the notch filter. When the server is
powered on again, it will resume capturing the fixed howling point before power off.
Dynamic Point: The maximum number of dynamic notch points of the notch filter. When the server
is powered on again, it will capture the dynamic howling point and clear it.
Notch Amplitude: The maximum amplitude (db) of the dynamic notch points of the notch filter. If
the value is set less than -9db, the notch amplitude of the notch point captured for the first time is
-9db. If the notch point is captured again, the depth of the notch point will gradually increase. If the
maximum notch amplitude is greater than -9db, the notch amplitude of the notch point captured
for the first time is the set value.
Notch Q value: The notch filter Q value.
Frequency Shifter On and Off: Turn this function on or off. If set to "On", this function will be
automatically enabled only when the fixed and dynamic notch points are full.
Frequency Shift Intensity: Overall audio movement (HZ), range: -10~10Hz.
4.5 Dante Interface
1. Support Dante channel input/output signals for a certain gain. The audio input by Dante
interface will be mixed with the audio of the MIC and output from the LineOut interface; only the
MIC audio will be mixed and output to the Dante channel.
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