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PBXMate vs. SoliCall Pro

  • On July 16, 2018
If you are a call center, conference bridge provider or any other organization looking to improve audio quality in your telephony using our innovative technology, you might ask yourself which of our products is most suitable for you. Assuming you are not developing your own telephony software our SDKs are not an option but what […]
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How to evaluate an echo cancellation algorithm?

  • On March 25, 2018
  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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Echo Cancellation with negative echo tail

  • On May 7, 2017
Background Echo path/tail is one of the most fundamental parameters when performing echo cancellation. In previous posts, we elaborated on the importance of echo tail and we also provided a Do It Yourself (DIY) method to calculate the echo tail. In most usage scenarios, the value of the echo tail will be a positive one […]
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Poor Audio Quality with Hosted VoIP and Cloud-Based PBX

  • On December 25, 2016
Background The hosted VoIP service is gaining popularity like other cloud-based infrastructure services. SMBs prefer hosted VoIP solution to cut down costs and operational overhead. In addition many providers offer attractive build-in features on top of the standard service.  As opposed to other IT services, VoIP is more delicate and if not handled correctly it […]
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Echo Cancellation with Flash – A Case Study

  • On December 12, 2016
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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Time manipulation and its impact on echo cancellation

  • On December 12, 2016
Background Time manipulation is a known technique in audio processing. It can be used to either compress the audio (resulting in speed-up) or expand the audio (resulting in slow-down). Usually this is done without altering the pitch and therefore without changing the fundamental signature of the voice.
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Why Echo Cancellation for Android is a Difficult Task?

  • On December 12, 2016
Background SoliCall offers different software solutions for audio quality improvements. One of the areas with an increasing demand is the need to solve echo issues with Android devices.  As discussed in few of our previous posts on  echo cancellation, in real-life conditions performing a good echo cancellation is a rather complex task. In addition, it […]
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Improving Audio Quality for Skype

  • On November 20, 2016
Background For many years, Skype has been one of the most popular softphones. Since Skype is being used on many brands of hardware and multiple network connections, there are bound to be occasions in which the audio quality is not satisfactory enough. We, at SoliCall, are constantly being approached for advice on ways to improve […]
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Intercoms and Acoustic Echo Cancellation

  • On November 19, 2016
Background One of the disturbing problems that appears when using intercoms, or other low-end full-duplex communication devices, is the generated echo.  Usually the echo is significant in these situations due to the following two reasons:
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Tips for Installing PBXMate in a Distributed VoIP Network

  • On November 19, 2016
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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