Cisco TelePresence SX20 Codec Reference Manual page 29

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 1 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 Microphone [1..2] EchoControl Mode
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
xConfiguration Audio Input Microphone [1..2] EchoControl NoiseReduction
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
SX20 Codec API Reference Guide TC7.0, JANUARY 2014.
D14949.08
About the API xConfiguration xConfiguration
xConfiguration Audio Input Microphone [1..2] EchoControl Dereverberation
xConfiguration Audio Microphones Mute Enabled
xConfiguration Audio SoundsAndAlerts KeyTones Mode
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xCommand
The system has built-in signal processing to reduce the effect of room reverberation. Requires the
Echo Control Mode to be enabled for the microphone.
Requires user role: ADMIN
Value space: <Off/On>
Off: Turn off the dereverberation.
On: Turn on the dereverberation.
Example: xConfiguration Audio Input Microphone 1 EchoControl Dereverberation: On
Determine whether audio-mute is allowed or not. The default value is True.
Requires user role: ADMIN
Value space: <True/InCallOnly>
True: Muting of audio is always available.
InCallOnly: Muting of audio is only available when the device is in a call. When Idle it is not
possible to mute the microphone. This is useful when an external telephone service/audio system
is connected via the codec and is to be available when the codec is not in a call. When set to
InCallOnly this will prevent the audio-system from being muted by mistake.
Example: xConfiguration Audio Microphones Mute Enabled: True
The system can be configured to make a keyboard click sound effect (key tone) when pressing a
key on the remote control, or when typing text or numbers on the Touch screen control panel.
Requires user role: USER
Value space: <Off/On>
Off: No key tones will be played when you type.
On: You will hear a key tone when you press a key or type text.
Example: xConfiguration Audio SoundsAndAlerts KeyTones Mode: Off
API Reference Guide
xStatus Appendices
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