Cisco Technology, Inc. (20240404534). AMBIENCE-ADAPTED AUDIO WATERMARKING FOR TELECONFERENCING
Contents
AMBIENCE-ADAPTED AUDIO WATERMARKING FOR TELECONFERENCING
Organization Name
Inventor(s)
Mihailo Kolundzija of Lausanne (CH)
Raul Alejandro Casas of Doylestown PA (US)
Marek Jacek Adamiec of Gdansk (PL)
AMBIENCE-ADAPTED AUDIO WATERMARKING FOR TELECONFERENCING
This abstract first appeared for US patent application 20240404534 titled 'AMBIENCE-ADAPTED AUDIO WATERMARKING FOR TELECONFERENCING
Original Abstract Submitted
a method is performed by an endpoint device that includes a loudspeaker, a microphone, and a controller. the method includes: by the loudspeaker, playing a loudspeaker signal into a space; by the microphone, detecting audio in the space, to produce a feedback audio signal; estimating acoustic parameters for the space including a reverberation time and an ambient noise power based on the feedback audio signal and the loudspeaker signal; receiving an incoming audio signal that is not detected by the microphone; using the acoustic parameters, generating an acoustic watermark signal that, when played into the space through the loudspeaker, would be inaudible to a listener; adding the acoustic watermark signal to the incoming audio signal to produce a watermarked audio signal; and playing the watermarked audio signal into the space through the loudspeaker.
