Cisco TelePresence SX20 Codec Reference Manual page 31

Cisco TelePresence SX20 Codec
Contents Introduction
Audio configuration
xConfiguration Audio Input HDMI [1] Mode
If you are connecting a Cisco camera with an integrated microphone to the codec's HDMI input, you
can enable/disable audio input on the port; if you are using any other camera, the audio input will be
disabled regardless of this setting.
If you are going to use the integrated microphone, this setting must be On (default value).
Whenever you are connecting a Cisco Table Microphone 20 to any of the codec's external
microphone inputs, the integrated microphone will be disabled regardless of this setting.
Requires user role: ADMIN
Value space: <Off/On>
Off: Disable audio on the HDMI input.
On: Enable audio on the HDMI input.
Example: xConfiguration Audio Input HDMI 1 Mode: On
xConfiguration Audio Input Line [1] VideoAssociation VideoInputSource
It is possible to associate an audio source with a video source, and further to determine whether to
play or mute audio depending on whether the video source is presented or not. By default, audio is
not muted.
Use the Audio Input Line [n] VideoAssociation VideoInputSource setting to define which video
source to associate the audio source with. Use the Audio Input Line [n] VideoAssociation
MuteOnInactiveVideo setting to define whether to play or mute audio when not presenting the video
source.
Requires user role: ADMIN
Value space: <1/2>
Range: Select one of the video input sources.
Example: xConfiguration Audio Input Line 1 VideoAssociation VideoInputSource: 2
SX20 Codec API Reference Guide TC7.3, OCTOBER 2015.
D14949.13
About the API xConfiguration xConfiguration
xConfiguration Audio Input Line [1] VideoAssociation MuteOnInactiveVideo
xConfiguration Audio Input Microphone [1..2] EchoControl Mode
xConfiguration Audio Input Microphone [1..2] EchoControl NoiseReduction
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xCommand
It is possible to associate an audio source with a video source, and further to determine whether to
play or mute audio depending on whether the video source is presented or not. By default, audio is
not muted.
Use the Audio Input Line [n] VideoAssociation VideoInputSource setting to define which video
source to associate the audio source with. Use the Audio Input Line [n] VideoAssociation
MuteOnInactiveVideo setting to define whether to play or mute audio when not presenting the video
source.
Requires user role: ADMIN
Value space: <Off/On>
Off: The audio source is not associated with a video source. The audio will be played locally and to
far end regardless of whether the video source is presented.
On: The audio source is associated with a video source. The audio will be played (locally and to
far end) when the associated video source is presented. The audio will be muted when the video
source is not presented.
Example: xConfiguration Audio Input Line 1 VideoAssociation MuteOnInactiveVideo: Off
The echo canceller continuously adjusts itself to the audio characteristics of the room and
compensate for any changes it detects in the audio environment. If the changes in the audio
conditions are very significant the echo canceller may take a second or two to re-adjust.
Requires user role: ADMIN
Value space: <Off/On>
Off: Echo Control should be switched Off if external echo cancellation or playback equipment is
used.
On: Echo Control is normally set to On to prevent the far end from hearing their own audio. Once
selected, echo cancellation is active at all times.
Example: xConfiguration Audio Input Microphone 1 EchoControl Mode: On
The system has a built-in noise reduction which reduces constant background noise (for example
noise from air-conditioning systems, cooling fans etc.). In addition, a high pass filter (Humfilter)
reduces very low frequency noise. Requires the Echo Control Mode to be enabled for the
microphone.
Requires user role: ADMIN
Value space: <Off/On>
Off: Turn off the Noise Reduction.
On: The Noise Reduction should be enabled in the presence of low frequency noise.
Example: xConfiguration Audio Input Microphone 1 EchoControl NoiseReduction: On
API Reference Guide
xStatus Appendices
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