Audio Commands; Xcommand Audio Diagnostics Measuredelay - Cisco TelePresence SX80 Reference Manual

Cisco TelePresence SX80
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Introduction

Audio commands

The xCommand Audio LocalInput, xCommand Audio LocalOutput, xCommand Audio
RemoteOutput commands are mainly intended for internal use by the CE Console application. CE
Console provides a graphical interface for the setup and configuration of audio chains.
An audio chain consists of a physical input connector that is assigned to a virtual local input,
which in turn is connected to a virtual local output, to which a physical output connector is
assigned. The commands listed above define the logical connection between the physical
connectors and the virtual input and outputs, and also how the virtual inputs impose such things
as gain, equalization and channel mixing to the signal.
When a call is made, the remote (from the far end) input signal is automatically added to all local
outputs. Likewise, all local inputs are automatically added to the remote (to the far end) output
gate.
Remember that xCommands are not persistent over a reboot. Therefore you have to include the
commands in a startup script in order to make the audio chain configuration persistent. A startup
script is automatically generated and activated if you use CE Console to set up the audio chains.
For more information about startup scripts and CE Console see the video system's Administrator
Guide and the CE Console User Guide.
Cisco TelePresence SX80 API Reference Guide CE9.1, JUNE 2017.
D15317.07
About the API xConfiguration xCommand xCommand

xCommand Audio Diagnostics MeasureDelay

This command will measure the audio delay/latency in a device connected to the video system.
A typical use case it to measure the delay in a TV connected to the video system via the HDMI
connector. If the delay in a TV is too high, the real-time experience of a video call will be
substantially degraded. If the delay is more than 50 ms we recommend the user to find a TV
setting that has shorter delay. Typical TV settings that can reduce the delay are: Gaming Mode
and PC Mode.
This command will measure the delay between output and input (microphone). This means
that if you are using an external acoustic echo canceller or audio mixer, this command will also
measure the delay of these devices.
Requires user role: ADMIN, USER
USAGE:
xCommand Audio Diagnostics MeasureDelay [MeasurementLength: MeasurementLength]
[Output: Output] [Volume: Volume]
where
: Integer (1..100)
MeasurementLength
The length of the measurement in number of seconds. In a noisy environment a longer
measurement time will give a more reliable and robust result.
: HDMI/Line/Internal/All
Output
HDMI: Measure the delay of the device connected to the HDMI output.
Line: Measure the delay of the device connected to the Line output (only available on
video systems that have a Line output).
Internal: Measure the delay of the internal loudspeaker (only available on video systems
that have an internal loudspeaker).
All: Will measure the maximum delay of all outputs.
: Integer (1..50)
Volume
The volume for the test signal. In a noisy environment a higher volume gives more
reliable and robust results.
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