Cisco TelePresence System Codec C40 Reference Manual page 88

Cisco TelePresence System Codec C40/C60
Contents Introduction
Audio commands
xCommand Audio Equalizer List
Shows the current equalizer settings for the codec.
Requires user role: ADMIN
Parameters:
EqualizerId: <1..8>
Example:
xCommand Audio Equalizer List EqualizerId: 1
*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"
*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
D14642.15 Codec C40-C60 API Reference Guide TC7.0, JANUARY 2014.
About the API xConfiguration
xCommand Audio Equalizer Update
88
xCommand xCommand
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.cisco.com/web/telepresence-developer/tools/integrators/tc-console.
Requires user role: ADMIN
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"
API Reference Guide
xStatus Appendices
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