Enable Acoustic Echo Cancellation. Article ID: 2577040 - Last Review: 08-Jul-2011. Acoustic Echo Software Informer. Featured Acoustic Echo free downloads. Acoustic Echo Cancellation Software Description LcT has developed acoustic echo cancellation (AEC) software for mobile and handheld devices such as smartphones and for teleconferencing systems. Our AEC software is designed to cancel acoustic feedback between a loudspeaker and a microphone in a distance talking. Acoustic Echo Cancellation Software| AEC Providing Reliable Signal Processing Solutions Since 2001 • • • • • • • • • • • • • • • • • • • • • • • ACOUSTIC ECHO CANCELATION DSP ALGORITHMS has a long history providing reliable acoustic echo cancellation solutions. Our AEC solutions have been used in pioneering projects such as the British Telecom's VoIP client on Windows Mobile smartphones back in 2006 when smartphones were dominated by Windows Mobile devices. ![]() Back then smartphone application processors used to operate at maximum speed of 200 MHz and needed to run a complete VoIP client including the AEC on top of the Windows Mobile operating system, and all had to be responsive with good audio quality. With today's multiple cores and GHz processors, AEC audio quality is more important than resource consumption, and our AEC solutions have been evolving with market requirements like no others, improving quality while keeping the robust features intact. Today, our acoustic echo cancellation solutions are used in all communication and conferencing markets where an AEC has an added value, from large multi-microphone installed audio systems to tiny mobile devices. What professionals say about our AEC Solutions William Westlake, product manager at British Telecom after testing the Microsoft VoIP client with DSP ALGORITHMS AEC plug-in on Windows Mobile 6.0: 'The Voice Quality is now superb, better than GSM and maybe as good as PSTN.' Mark Hemmer, after testing Symetrix' SymNet Designer 6.0: 'I loaded 6.0 into the system for testing in an Auditorium that seats up 500 people. This location has over 40 audience microphones used for questions and answers, plus another 4 wireless and 5 wired microphones on the platform, plus a podium microphone. They regularly do both video and teleconferencing from this location and due to the size of the room, PA is mandatory. I submixed all 50 microphones through 2 automixers and simply inserted a SymNet 6.0 single channel AEC in the signal path. ![]() I was amazed at how well it worked. This Facility uses a Polycom for video conference and A Gentner DH20 for teleconference, both of these items work well but we would still notice some glitches and echo at times probably due to the extreme environment. Running the SymNet 6.0 AEC in circuit with these two devices completely removed this problem with no artifacts. With the internal AEC in the Gentner and Polycom bypassed, the system was equally problem free.' SOURCES OF ACOUSTIC ECHO Acoustic echo is generated whenever an application plays sound to a loudspeaker and at the same time records sound from a microphone located in the same listening space.
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