Ultimately, when only one person can talk at a time, it’s difficult for users to interrupt remote attendees. In these situations, the echo signal comes in more loudly than the end user’s voice making it challenging to remove the echo without also suppressing the speech signal of the end user, particularly when both parties attempt to speak at the same time. In many device setups, the speaker is closer to the microphone than the end user. The tasks of an echo cancellation module are to recognize when the sound from loudspeaker gets into the microphone and then remove it from the outbound audio. This results in the person on the other end of the call hearing their own voice, which creates an echo effect: Teams optimizes audio for echo, interruptability and reverberation to improve the call experienceĮcho is a common audio affect that can negatively impact online meetings when one of the participants is not using a headset and the signal from their loudspeaker gets captured by their microphone. The demo below shows how the new ML model improves the Teams meeting experience. Audio in these challenging settings now sound no different compared to conversations from the office. Now, users can sound as if they’re speaking into a headset microphone, even when they’re in a large room where speech and other noise can bounce from wall to wall. Lastly, Teams uses AI to reduce reverberation, improving the quality of audio from users in rooms with poor acoustics. Now, users are able to speak and listen at the same time, allowing for interruptions that make the conversation seem more natural and less choppy. This model goes a step further to improve dialogue over Teams by enabling “full duplex” sound. We have recently extended our machine learning (ML) model to prevent unwanted echo – a welcome addition for anyone who has had their train of thought derailed by the sound of their own words coming back at them. ![]() Today, we want to spotlight new machine learning (ML) and AI-based features in Microsoft Teams that dramatically improve the sound quality of meetings and calls, even in the most challenging situations. This has been incredibly helpful in remote and mobile work settings, where users don’t always have full control over their environment. Replace the previously recorded video with the same oneĪfter either of these solutions is complete, an owner will be able to turn on noise suppression for these videos.In a previous blog, we shared how Microsoft Teams uses AI to remove distracting background noise from meetings and calls.Trim an old migrated video (even by one second works).However, here are two simple solutions for turning on noise suppression for pre-August Office 365 migrated videos: From the Options panel on the edit page of the video, turn on Noise suppression.īefore August 2020: Owners of any Office 365 videos migrated don't have the option to turn on noise suppression. Noise suppression off Support for Office 365 videos migrated to Stream (Classic)Īfter August 2020: Owners of any Office 365 videos that were migrated to Stream (Classic) can turn on noise suppression from within a video's Edit page. If a viewer wants to turn on or off noise suppression for a single video, they select the noise suppression button either during playback or pause. When noise suppression is on, video viewers can choose to keep it on or turn it off for each video they watch. On the Videos page, select Update video details In the Options section, flip the switch to On If you want to turn on noise suppression for a video, you can do so in two places: Make noise suppression available for all users
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