PSB4860 Ver la hoja de datos (PDF) - Siemens AG
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PSB4860 Datasheet PDF : 250 Pages
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PSB 4860
2.1.3
Echo Suppression
The echo suppression unit can be in one of three states:
• transmit state
• receive state
• idle state
Functional Description
In transmit state the microphone signal drives the line output while the line input is
attenuated. In receive state the loudspeaker signal is driven by the line input while the
microphone signal is attenuated. In idle state both signal paths are active with evenly
distributed attenuation.
idle state
microphone
loudspeaker
line out
line in
transmit state
microphone
loudspeaker
line out
line in
receive state
microphone
loudspeaker
Figure 14 Echo Suppression Unit - States of Operation
line out
line in
Semiconductor Group
30
10.97
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