Cisco Technology, Inc. (20240404534). AMBIENCE-ADAPTED AUDIO WATERMARKING FOR TELECONFERENCING

AMBIENCE-ADAPTED AUDIO WATERMARKING FOR TELECONFERENCING

Organization Name

Cisco Technology, Inc.

Inventor(s)

Mihailo Kolundzija of Lausanne (CH)

Raul Alejandro Casas of Doylestown PA (US)

Hua Mu of Orlando FL (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.