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How to evaluate an echo cancellation algorithm?

  • Posted by admin
  • On November 21, 2017
  When you encounter an echo problem in your application, network or devices it is obvious you need to introduce an echo canceller.  Your next step is to explore at least two possible locations for performing the echo cancellation: cancelling the echo on the client side or doing it on the server side. The decision […]
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call center quality – noise cancellation

  • Posted by admin
  • On March 6, 2017
  [EDITED] For an explanatory video please check the post on reducing noise in call centers. Background Call centers are crowded locations in which agents are sitting next to each other making phone calls to customers. As a result, these phones calls contain a lot of ambient noise that is caused due to the physical conditions […]
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Personal Noise Reduction Technology. Altruism or Egoism ?

  • Posted by admin
  • On March 16, 2014
Background In the last post we have discussed the different options for using personal noise reduction in mobile phones. In this post we will elaborate on the expected value from using this advanced technology. Usually, when you purchase a new mobile phone, you are acting to the benefit of one’s self. You want to enjoy […]
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Controlling Audio Quality in Conference Calls

  • Posted by admin
  • On September 12, 2013
Background Conference calls are a common tool in the business environment today. They seamlessly close any geographic distance between the participants. While participating in a conference call you are usually not aware of the physical location and time zone of all other participants. This is true until you find it hard to understand the flow […]
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Personalized Noise Reduction Software. Why Is It Different ?

  • Posted by admin
  • On July 7, 2013
Background Following our last post that revealed audio samples of the new personalized noise reduction technology, we keep getting requests to clarify the difference between the personalized noise reduction software and other noise reduction technologies that exists in the market today. In this post we will review a common scenario that will help visualized the […]
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Tips for Installing PBXMate in a Distributed VoIP Network

  • Posted by admin
  • On February 3, 2013
Background Many VoIP network administrator face a common problem that their users complain about the quality of their phone calls. The most common complains are about noise, echo and other artifacts. If the network is distributed, it becomes very difficult to analyze and control the multiple components in the network starting from the end devices […]
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Flash Conference with Acoustic Echo Cancellation

  • Posted by admin
  • On December 7, 2012
Background Following our previous post on acoustic echo cancellation on flash calls, we got requests to improve audio quality also on conference calls that are based on flash technology. The case study that was described in the previous post dealt with audio quality for regular flash calls, and showed how to convert them to SIP […]
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Installing PBXMate with Elastix – Phone Setup

  • Posted by admin
  • On November 21, 2012
  Background In a previous post we reviewed the basics of installing of PBXMate with Elastix. In this post we will review how to configure your phones to work with PBXMate. This post will discuss the configuration for VoIP phones.  In a future post we will review the configuration required for analogue phones.
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Installing PBXMate with Elastix

  • Posted by admin
  • On October 1, 2012
[Important Note]: New versions of Elastix no longer support add-ons technology. To install PBXMate with new version of Elastix we offer our plug-and-play technology that works out-of-the-box with Elastix. For details, please visit PBXMate page.   Background As recently announced, the PBXMate is now an Addon to Elastix. As a result, installing PBXMate with Elastix […]
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Echo Cancellation with Flash – A Case Study

  • Posted by admin
  • On September 7, 2012
Background From time to time we are getting requests to improve audio quality in flash calls and mainly to help remove echo. In a previous post, Echo Cancellation with Flash Clients, we discussed few techniques that could be helpful. In this post we show a case study for integrating a centralized audio filtering to improve […]
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