CDB6420 Cirrus Logic Inc, CDB6420 Datasheet - Page 34
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CDB6420
Manufacturer Part Number
CDB6420
Description
Development Kit
Manufacturer
Cirrus Logic Inc
Datasheet
1.CDB6420.pdf
(52 pages)
Specifications of CDB6420
Silicon Manufacturer
Cirrus Logic
Application Sub Type
Speakerphone
Kit Application Type
Audio / Video / TV
Silicon Core Number
CS6420
Kit Contents
Board
Kit Features
Analog And Digital Patch Area
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
GLOSSARY
Echo
Network Echo
Acoustic Echo
Reverberation
Near-End
Far-End
Transmit Path
Receive Path
Full-Duplex
Half-Duplex
Supplementary Echo Suppression
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A signal that returns to its source after some delay.
Echo resulting from signal reflection due to an impedance mismatch in a 2-to-4 wire converter
(hybrid).
Echo created by signal propagation in a room from a speaker to a microphone.
Local information that bounces around the room before it reaches the microphone. An example
of reverberation is when your back is to the speakerphone, and your voice bounces off the wall
before it reaches the microphone.
The location with the acoustic interface (speaker and microphone).
The location connected to the network interface.
The signal path from Near-End input to Far-End output.
The signal path from Far-End input to Near-End output.
The state when both Transmit and Receive paths are simultaneously active.
The state when either Transmit or Receive path is active.
Dynamic attenuation placed in the opposite path of the active path to mask residual echo. For
example, if the receive path is active, the transmit path is attenuated. When both paths are
simultaneously active, the suppression attenuation is removed. See the section on Suppression
in Design Considerations for more details.
CS6420
DS205PP2