Personal Noise Reduction for Mobile Phones

  • On November 19, 2016
Background The personal noise reduction is a new approach for identifying and removing ambient noise in telephony. As explained in a previous post, the personal noise reduction is superior to any existing approaches for noise reduction. In this post we will discuss different usage scenarios for mobile phones.
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Personal Noise Reduction Technology. Altruism or Egoism ?

  • On November 19, 2016
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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Personal Noise Reduction – out of the box deployment

  • On November 19, 2016
Background The personal noise reduction software has proven to increase audio quality and MOS score in different noisy environments. This technology is using information on the speaker’s voice in order to separate it from the background noise and attenuate the latter. This powerful technology had one major drawback that prevented it from reaching mass deployment. […]
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Profile-Based Noise Reduction

  • On November 19, 2016
Background In this post we will review the evolution of this technology over the years. Initially this technology was introduced under the name of personal noise reduction.  Few months later the concept of out-of-the-box deployment with generic profiles was introduced. At the next step, we have renamed this technology to “profile-based noise reduction” based on […]
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Extreme Noisy Environments

  • On November 19, 2016
Background Following our last post on the profile-based noise reduction technology, in this post we would like to cover few environments that suffer from extreme ambient noise. In these environments, many existing technologies are used to minimize the ambient noise. Unfortunately this is not enough and the output usually suffers from significant residual ambient noise […]
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How can echo suppression badly impact call quality ?

  • On January 16, 2016
Background Can phones/soft-phones with built-in echo suppression badly impact the audio quality? Surprising as it may sound the answer is positive. In other words, when a call center, or any other organization, purchase phones with built-in echo suppression it is jeopardizing the overall call quality.  In order to analyze the reason for this phenomena we […]
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Tips for Developing VoIP on Mobile Devices (Android,iOS,…)

  • On August 1, 2011
CPU Consumption One of the main problems in mobile devices is their limited CPU Power. As a result the delay in the audio signal is increased and from time to time portions of the audio signal might get lost. In order to resolve these problems, you need to verify that your VoIP application is optimized […]
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Critical Factors to Assure High Audio Quality in VoIP

  • On April 1, 2011
Background Many organizations today want to deploy / develop VoIP applications. The need for audio communication is required for many applications like customer support, internal communication between employees etc. VoIP is used as the underlying technology because it is the industry standard for voice communication, it can give high quality and it is usually a […]
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Cancelling Ambient Noise in Telephony

  • On February 13, 2011
What is ambient noise? Ambient noise is all sounds that are picked up by the microphone but are not part of the conversation. Usually all sounds that are not originated from the vocal tract of the speaker are considered ambient noise. Types of ambient noise Stationary Noise – monotonic sound that has similar acoustic characteristics […]
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