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When to Use the Channel and Automix Equalizers
Apply Automix EQ to make system-wide changes, such as a treble boost to improve speech clarity. Use Channel EQ to make
adjustments to a specific channel. For example, to reduce unwanted noise picked up by only one channel.
Equalizer Applications
Conferencing room acoustics vary based on room size, shape, and construction materials. Use the guidelines in following ta
ble.
EQ Application
Treble boost for improved speech intelligibility
HVAC noise reduction
Reduce flutter echoes and sibilance
Reduce hollow, resonant room sound
EQ Contours
Use the built-in equalizer contours to quickly apply EQ changes to all channels. EQ contours are separate from the per-channel
EQ settings. Applying both EQ contours and per-channel EQ has a cumulative effect, meaning that the EQ changes stack on
top of each other.
To enable a contour, open the web application and select a contour in the device options section.
Off: Turns off any active EQ contours
High Pass (default): 300 Hz low-cut filter
Low Shelf: 960 Hz, -10 dB low-shelf filter
Multi-Band: 200 Hz low-cut filter, parametric 450 Hz, -10 dB, 2.87 Q, ½ octave parametric, 900 Hz, -10 dB, 2.87 Q, ½ octave
parametric
Click Bypass all EQ to quickly bypass any EQ contours or channel EQ settings.
Suggested Settings
Add a high shelf filter to boost frequencies greater than 1
kHz by 3-6 dB
Add a low cut filter to attenuate frequencies below 200 Hz
Identify the specific frequency range that "excites" the room:
1.
Set a narrow Q value.
2.
Increase the gain to between +10 and +15 dB, and
then experiment with frequencies between 1 kHz and
6 kHz to pinpoint the range of flutter echoes or sibi
lance.
3.
Reduce the gain at the identified frequency (start be
tween -3 and -6 dB) to minimize the unwanted room
sound.
Identify the specific frequency range that "excites" the room:
1.
Set a narrow Q value.
2.
Increase the gain to between +10 and +15 dB, and
then experiment with frequencies between 300 Hz
and 900 Hz to pinpoint the resonant frequency.
3.
Reduce the gain at the identified frequency (start be
tween -3 and -6 dB) to minimize the unwanted room
sound.
Shure Incorporated
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