Xcommand Audio Equalizer Update; Xcommand Audio Microphones Mute; Xcommand Audio Microphones Unmute - Cisco TelePresence System Codec C90 Reference Manual

Cisco TelePresence System Codec C90
Contents Introduction

xCommand Audio Equalizer Update

The system has eight user defined equalizers, each made up of six second order IIR sections. Each
of the eight equalizers can be applied to one or more of the audio input and output connectors on the
codec. Each IIR section can be modified independently.
There are five filter types, and the frequency response variations dependent on some of the
parameter variations. The Q-value for low pass, high pass, low shelf and high shelf filters should be
set to 1/sqrt(2) in order to get maximally flat responses. The Q-value (or Q-factor) is defined as Q=f0/
bw. Where f0=resonance frequency in Hz; and bw=filter bandwidth in Hz.
To switch off one of the six equalizer sections; set the second order section to have a flat frequency
response. This can be done by setting the filter type to "none" or by setting the filter type to
"peaking" and the gain to "0" (zero).
We recommend using the TC Console tool, with the embedded equalizer GUI, to modify the
equalizers. The TC Console software is found on the Developer Zone web page. Go to: http://
developer.tandberg.com/web/guest/tools/integrators/audio-console.
Requires user role: USER
Parameters:
EqualizerId(r): <1..8>
Section(r): <1..6>
FilterType(r): <HighPass/HighShelf/LowPass/LowShelf/None/Peaking>
Frequency(r): <S: 0, 32>
Q(r): <S: 0, 32>
Gain(r): <S: 0, 32>
Example:
xCommand Audio Equalizer List EqualizerId: 1 Section: 1 FilterType: Peaking
Frequency: "100" Q: "4" Gain: "0"
*r AudioEqualizerListResult Equalizer 1 Section 1 FilterType: "Peaking"
*r AudioEqualizerListResult Equalizer 1 Section 1 Frequency: "100"
*r AudioEqualizerListResult Equalizer 1 Section 1 Q: "4"
*r AudioEqualizerListResult Equalizer 1 Section 1 Gain: "0"
*r AudioEqualizerListResult Equalizer 1 Section 2 FilterType: "Peaking"
*r AudioEqualizerListResult Equalizer 1 Section 2 Frequency: "200"
*r AudioEqualizerListResult Equalizer 1 Section 2 Q: "4"
*r AudioEqualizerListResult Equalizer 1 Section 2 Gain: "0"
*r AudioEqualizerListResult Equalizer 1 Section 3 FilterType: "Peaking"
*r AudioEqualizerListResult Equalizer 1 Section 3 Frequency: "500"
*r AudioEqualizerListResult Equalizer 1 Section 3 Q: "4"
*r AudioEqualizerListResult Equalizer 1 Section 3 Gain: "0"
*r AudioEqualizerListResult Equalizer 1 Section 4 FilterType: "Peaking"
*r AudioEqualizerListResult Equalizer 1 Section 4 Frequency: "1000"
*r AudioEqualizerListResult Equalizer 1 Section 4 Q: "4"
*r AudioEqualizerListResult Equalizer 1 Section 4 Gain: "0"
*r AudioEqualizerListResult Equalizer 1 Section 5 FilterType: "Peaking"
D14641.06 Codec C90 API Reference Guide TC5.0 November 2011.
© 2010-2011 Cisco Systems, Inc. All rights reserved.
About the API xConfiguration

xCommand Audio Microphones Mute

xCommand Audio Microphones Unmute

72
xCommand xCommand
*r AudioEqualizerListResult Equalizer 1 Section 5 Frequency: "2000"
*r AudioEqualizerListResult Equalizer 1 Section 5 Q: "4"
*r AudioEqualizerListResult Equalizer 1 Section 5 Gain: "0"
*r AudioEqualizerListResult Equalizer 1 Section 6 FilterType: "Peaking"
*r AudioEqualizerListResult Equalizer 1 Section 6 Frequency: "5000"
*r AudioEqualizerListResult Equalizer 1 Section 6 Q: "0"
*r AudioEqualizerListResult Equalizer 1 Section 6 Gain: "0"
** end
Mute all microphones.
Requires user role: USER
Example:
xCommand Audio Microphones Mute
*r AudioMicrophonesMuteResult (status=OK):
** end
Unmute microphones.
USER
Requires user role:
Example:
xCommand Audio Microphones Unmute
*r AudioMicrophonesUnmuteResult (status=OK):
** end
API Reference Guide
xStatus Appendices
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