D14128.03—JULY 2009
134
Codec C90
System Integrator Guide
Contents
Introduction
Getting Started
Interfaces
About the API
xConfiguration
xCommand
xStatus
Cameras
Appendices
Contact us
The equalizer
The system has 8 user defined equalizers, each made up of
6 second order IIR sections, see the illustration below.
There is a set of experimental API commands for the
audio equalizer and audio input/output. The experimental
commands can be used ‘as is’ and is documented in the
xConfiguration section and the xCommand sections.
NOTE!
The experimental commands WILL change.
z
-1
a1
a2
b1
b2
b0
Section 1
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-1
a1
a2
b1
b2
b0
Section 4
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-1
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-1
a1
a2
b1
b2
b0
Section 5
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-1
z
-1
a1
a2
b1
b2
b0
Section 6
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-1
z
-1
a1
a2
b1
b2
b0
Section 3
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-1
z
-1
a1
a2
b1
b2
b0
Section 2
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-1
z
-1
IIR FILTER
8 equalizers are shared by the input and output connectors. Each
equalizer filter has 6 sections and each section has five parameters
(a1, a2, b0, b1, b2)
Equalizer IIR filter
Contents
Introduction
Getting started
Interfaces
About the API
xConfiguration
xCommand
xStatus
Cameras
Appendices
Contact us
Appendices
