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Why we got used to ambient noise in telephony?

  • Posted by admin
  • On January 5, 2012
Background If we just got a penny every time we heard the sentence:  “Our telephone equipment provides a superb audio quality… it could not be better…”.  Unfortunately, although this sentence is commonly used, it is one of the biggest self-deception in the industry.   When your friend calls you from the Mall or from the […]
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Improving Audio Quality with Analog Telephone Adapter (ATA)

  • Posted by admin
  • On November 14, 2011
Background One of the first steps SMBs take towards VoIP is to add ATA to their existing analog telephone network. There are many well known brands of ATAs in the market today like Linksys PAP2, Cisco PAP2T, Grandstream HandyTone and others. Regularly we are requested to improve audio quality in such telephony systems – especially […]
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Tips for Developing VoIP on Mobile Devices (Android,iOS,…)

  • Posted by admin
  • 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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Audio Quality When Using Speakerphone During Phone Calls

  • Posted by admin
  • On July 5, 2011
  Background There are different scenarios in which calls are made using speakerphones. For example: In manufacturing floor where the employees want to have an open communication channel without the limitation of headset or handset. When using intercom devices. When more than one person needs to listen to the call (e.g. in conference rooms). When […]
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The Importance of Audio Quality in Call Centers

  • Posted by admin
  • On June 1, 2011
Background Telephony is the main (and usually the only) communication channel between Call Centers and their customers. The efficiency and quality of the telephony interactions between a Call Center and its customers is a key factor to the Call Center’s business success.  This efficiency and quality can be divided to two major categories: Information & […]
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Automatic Speech Recognition (ASR) in IVR Systems

  • Posted by admin
  • On May 1, 2011
Background The most important role of an IVR system is to efficiently handle incoming calls allowing the organization to improve its service while saving time & money when processing these calls. In order to improve ROI and increase customer satisfactions, organizations need to implement an efficient IVR that quickly gathers the necessary information from the […]
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Critical Factors to Assure High Audio Quality in VoIP

  • Posted by admin
  • 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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Improving the Accuracy of Speech Recognition Applications

  • Posted by admin
  • On February 24, 2011
Background One of the main problems that can badly impact the accuracy of speech recognition is ambient noise. Ambient noise and especially non-stationary noise is very problematic. See Cancelling Ambient Noise In Telephony for explanation on the nature of ambient noise. The problem with ambient noise is that the speech recognition engine has difficulty to […]
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Cancelling Ambient Noise in Telephony

  • Posted by admin
  • 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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