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Case: 1:17-cv-03078 Document #: 901-3 Filed: 08/12/20 Page 595 of 609 PageID #:48611
Page 15
Calibration for Video Codec
It is important to maintain "standard transmission levels" to be compatible with other systems.
The following illustration details the targeted send level.
-20
-15
-10
0
+5
+10
+15
FS-400/800 provides
Ideal noise floor – noise should not
Ideal speech level – adjust send
exceptional signal to
be detected at the distant end if the
level so average speech peaks at
noise ratio
ambient noise floor is under -12dB
+8 to +10
Dynamic range goal = >20dB
Some codecs have an audio meter that displays the transmission level.
Ideally the output level of the mixer should be adjusted so voices peak between +5 to +10 dB.
CTG technical support can assist in determining the proper send level over a video call.
During calibration, the volume control indicator of the video codec should be set at about mid-
range. Typically the video codec will display an on screen graphic that will indicate the incoming
audio level when a volume key is pressed.
15
PGR2020-00079
Shure v. ClearOne
Page 16 of 26
ClearOne Ex. 2169
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