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Matrix SPARSH VP710 User Guide
To configure AEC via web user interface:
•
Click on
Settings->Voice
.
•
Select the desired value from the
ECHO
list.
•
Click
Confirm
to save the change.
Background Noise Suppression (BNS)
Background noise suppression (BNS) is designed primarily for hands-free operation and reduces background
noise to enhance the communication in noisy environment.
Automatic Gain Control (AGC)
Automatic Gain Control (AGC) is applicable to hands-free operation and is used to keep the audio output at nearly
a constant level by adjusting the gain of signals in certain circumstances. This increases the effective user-phone
radius and helps with the intelligibility of soft-talkers.
Voice Activity Detection (VAD)
Voice Activity Detection (VAD) is used in speech processing to detect the presence or absence of human speech.
When detecting period of “silence”, VAD replaces that silence efficiently with special packets that indicate silence is
occurring. It facilitates speech processing and deactivate some processes during non-speech section of an audio
session. VAD can avoid unnecessary coding or transmission of silence packets in VoIP applications, saving on
computation and network bandwidth.
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