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Could-based noise cancelling software

  • On January 10, 2023
Audio filtering, like noise cancellation and echo cancellation, can be performed on the sending side (i.e. near-end), receiving side (i.e. far-end) or on the network. Each option has its own advantages and disadvantages. In this post, we will discuss the noise cancelling filtering and the cases when it is likely or recommended to perform it […]
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Reference based Noise Reduction

  • On July 28, 2022
Background Ambient noise during phone calls is annoying especially when the phone calls are a significant part of your business. Let’s assume you run a call center or a shared workspace and there is temporary (or constant) source of noise that is picked up by the phones of the agents and therefore this noise is […]
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Cocktail party and crosstalk

  • On May 3, 2022
The cocktail party problem is one of the oldest problems in the arena of signal processing. The problem is describes as follows: in a cocktail party there are many people talking. All their voices are mixed in the air and the people listening will hear all the voices blended together. Nevertheless, in most cases, the […]
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Cancel human voice at home?

  • On February 1, 2021
Background The popularity of home office significantly increased in the last decade especially due to an increase in the speed and reliability of internet connectivity. In 2020 the Covid-19 pandemic gave another boost to the growing popularity of home office. In this post we would like to cover the issue of noise and specifically human […]
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Skype for business and audio quality

  • On April 19, 2019
Skype for business is a very powerful and popular communication platform and is used by many organizations. Using Skype for business is both a convenient and economic way for collaboration. Skype is used by the employees to communicate both with fellow workers and also with people outside the organization. In this post we would like […]
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Static when using Skype

  • On November 19, 2016
Background An audio quality issue that disturbs some Skype users is static noise that appears during calls. Although this post discusses Skype, the same logic applies to any other softphone. The static can originate from different locations and the purpose of this blog post is to help you analyze the source of the problem.
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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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Audio Quality in Video Conferences

  • On November 19, 2016
Background In the last couple of years the percentages of employees that work from home rapidly increases. There are three main reasons for this phenomenon: (1) Efficiency. No need to spend hours driving to/from the office and in many cases the amount of interrupts while at home is lower than at the office. (2) Cost. […]
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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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Personalized Noise Reduction in Telephony

  • On November 19, 2016
Background Since the first days of telephony, noise became an integral part of communication.  Modern life caused the problem of ambient noise during phone calls to be even more acute than before.  There are several reasons for this, like: 1. Mobility. Today people make calls from almost every location: street, road.. and even from the […]
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