Echo Cancellation

During a conference call one of the challenge is to eliminate acoustical echo & delivering good sound quality.The term Echo Cancellation is used in telephony to explain the method of eliminating echo from a voice communication so that better voice quality will be recieve on phone calls.

Echo Cancellation can be defined by many ways, such as:-

• The method of removing the acoustic echo in a video conferencing room.
• A technique used in high-speed modems and voice circuits to isolate and filter out unwanted signal energy caused by echoes from the main transmitted signal.

In Echo Cancellation the originally transmitted signal that re-appears, with some delay are recognized, in the recieved signals. Once we can recognized the echo, we
can eliminates from the the recieved signals. This approach is mainly implemented by using Diginal Signal Processor (DSP), it can also be implemented using software i.e echo suppressors or echo cancellers.

Due to Echo Cancellation the person hear his own voice with an Echo. This Distributed Echo Cancellation problem is solved by ClearOne. They solve this problem by assigning an acoustical echo canceller to each microphone. This echo canceller recognises the sound and returned it to other end as an echo and removes it.
In the year 1998 ClearOne introduced the Distributed Echo Cancellation and integrates it into every audio conferencing system.

So Why are you waiting. Use ClearOne's Echo free VoIP Phones