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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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Echo cancellation for browser-based Flash/Silverlight chat applications

  • On November 20, 2016
Browser-based chat applications Several of the vendors that develop audio/video chat applications decide to do it using Flash or Silverlight technology due to the following two advantages: 1.       The end-users do not need to install any additional software, except for the necessary plug-ins on their existing browser. 2.       The end-users can run the application on […]
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How to control audio volume in conference rooms?

  • On November 20, 2016
Can you hear people that are sitting far away from the microphone? Have you ever joined a conference call where some of the participants were sitting in a conference room? Were you able to understand every word that these people were saying? Probably not. Usually you can clearly hear the people sitting close to the […]
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Improving the Accuracy of Speech Recognition Applications

  • On November 20, 2016
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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High Quality Recording of Streaming Audio

  • On November 20, 2016
Background From time to time you need to record streaming audio on your computer. One option is simply to activate your recording program while playing the streaming audio. The problem with this solution is that the quality of the recorded audio will be very low since you are not capturing the source of the audio […]
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Automatic Speech Recognition (ASR) in IVR Systems

  • On November 20, 2016
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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Audio Quality When Using Speakerphone During Phone Calls

  • On November 20, 2016
  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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Acoustic Echo Cancellation and Sound Cards

  • On November 20, 2016
Clock Synchronization Acoustic Echo Cancellation (AEC) is a method of removing the echo from the audio signal captured by the microphone. This is done by using the audio that is played to the speakers as a reference audio signal. Most AEC algorithms require that both audio signals, i.e. the signal captured from the microphone and […]
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Noise Reduction and Echo Cancellation for existing VoIP Networks

  • On November 20, 2016
Background Many times we are asked for ways to cancel noise and improve audio quality in existing telephony networks.  The majority of the requests come from call centers and SMBs that are looking for simple plug-and-play solutions to resolve audio quality issues that they are facing.  Since most of these request arise for companies that […]
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Improving Audio Quality with Analog Telephone Adapter (ATA)

  • On November 20, 2016
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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