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A media coverage on the demo in Computer World available here.The prototype system was shown at MSR TechFest 2009.General settings: Be careful which settings or effects you enable. Reset the Device's Audio Settings What if you find that your headphones' settings are okay, but the echo persists You can plug in the headphones to another device to see if the echo persists. If you are using speakers and want to reduce speaker output from being picked up by the microphone then enable Acoustic Echo Cancellation option thats under Microphone Effects. Once you do it right, plug in the headphones for a test. Each headphone brand or type is different, and you may need to configure some settings before using the headphones. Comparison of audio spatialization over headphone: audio wave with alternating mono and spatial. Check the Headphones Settings If the headphones are new and plugging out and back in doesn't work, check the headphones settings.Comparison of audio spatialization over a pair of speakers: mono wave and spatialized wave.Paper “ Multichannel Acoustic Echo Cancelation in Multiparty Spatial Audio Conferencing With Constrained Kalman Filtering,” in Proceedings of the International Workshop on Acoustic Echo and Noise Control (IWAENC’08), Seattle, WA, September 2008.We will also demonstrate the AEC capability in real time so that the remote side will only hear the near-end participant’s speech without their own echoes. This is proven to significantly improve conferencing experience since each participant could easily differentiate the current remote talker and focus on the content being discussed.įurthermore, Multichannel AEC (Acoustical Echo Cancellation) is a crucial component to enable quality audio experience during conferencing, especially without headset. We have built and will demonstrate technologies to enhance user experience in multiparty conferencing using highly realistic and immersive spatial audio, with both loudspeakers and headphones.
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This is in sharp contrast to what happens in real life where each voice has its distinct location. Current commercial systems mix them into a single mono audio stream, and thus all voices of remote participants will sound like coming from the same location when using loudspeakers or from inside the listener’s head when using headphones. In multiparty conferencing, one hears voices of more than one remote participants.