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 […]

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 […]

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 […]

On November 18, 2016

What is echo in telephony? In a nutshell, echo is the phenomena in which your voice is being played back to your speakers. Echo has been with us since the early days of telephony. In the past, when most people where using PSTN lines, echo was less disturbing due to the fact that the delay […]

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 […]

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 […]

High Quality Recording of Streaming Audio

Improving the Accuracy of Speech Recognition Applications

Cancelling Ambient Noise in Telephony

Echo in VoIP and Altruism

How to control audio volume in conference rooms?

Echo cancellation for browser-based Flash/Silverlight chat applications