Noise reduction and Echo cancellation
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Transcript of Noise reduction and Echo cancellation
Copyright © SoliCall Ltd.
June 2015
About us
SoliCall is a technology company.
SoliCall develops unique software products for improving audio quality in both the network and the devices.
SoliCall has a proven track record and its technology is used to filter billions of voice chat minutes per month.
Copyright © SoliCall Ltd.
SoliCall’s Technology
Noise Reduction – attenuate ambient noise and noise generated in the network.
Profile-Based Noise Reduction – improve audio quality by focusing on the voice of the speaker.
Echo Cancellation – cancel echo that is generated on local or remote devices and networks.
Automatic Gain Control – keep the voice at a comfortable volume regardless the distance of the speaker from the microphone and phone settings.
Copyright © SoliCall Ltd.
SoliCall’s Products
PBXMate – A plug-and-play solution for SIP based VoIP network.
SDK for Client and Server. OEM solution for manufacturers / developers.
SoliCall Pro and Personal PBXMate - for a single phone.
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PBXMate
A plug-and-play software product for SIP based VoIP network.
Improves audio quality for all participants in a call. Constantly improves and monitors quality.
Noise and echo are removed and speech level is adjusted to a comfortable level
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Usage of PBXMate – examples
Call CentersIncrease the efficiency of the call center by
improving both incoming and outgoing audio.
Teleconferencing ProvidersImproves the quality of the calls even with large
amount of participants.
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PBXMate AddOn - Installation
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PBXMate AddOn – Phone Setup
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Only Phones for which the Sip Proxy port ismodified to 5061, will work with PBXMate.
Note: In this Sip Proxy architecture, the phone willwork with G.711 or G.722. For G729 and other codes, a Sip Trunk architecture should be used.
PBXMate AddOn – Making Calls
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Upon successful phone setup, calls should appear in the statistics tab.
PBXMate AddOn – Basic Filter Selection
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PBXMate AddOn – Advanced Setup
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Parameter Location:/usr/local/solicall/bin/pbxmate.conf
Statistic LoggingStatisticsFile=../log/stats
Enable Recording:OrigRecordingLibrary=../rec/CleanRecordingLibrary=../rec/
PBXMate AddOn – Advanced Setup
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Profile-Based noise reduction:Once a profile is created, you can use it:ProfileBasedNRName=English
Setup for conference calls:DefaultCmd=*--1
PBXMate – Alternative Architectures
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As a SIP Trunk
As a Router
Note: Using these architectures requires a change in the dial-plan of the PBX.
PBXMate – Additional Reading
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Phone Proxy Setup (Blog)http://solicall.com/installing-pbxmate-with-elastix-phone-setup/
White Paper (PDF)http://solicall.com/wp/pbxmate-wp.pdf
User Manual (PDF)http://solicall.com/wp/SoliCall PBXMate -User Manual.pdf
Thank You
Q & A.
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