公开(公告)号：US20230129867A1

公开(公告)日：2023-04-27

申请号：US17978730

申请日：2022-11-01

Applicant: Cisco Technology, Inc.

Inventor： Raul Alejandro Casas ,  Marcin Ciolek ,  Samer Hijazi ,  Dror Maydan ,  Hua Mu ,  Erik Panu ,  Christopher Rowen

IPC: H04L12/18 ,  G10L25/78 ,  H04M9/02 ,  G06F3/16 ,  H04M3/56

Abstract: Systems and methods are disclosed for audio group identification for conferencing. For example, methods may include joining a conference call using a network interface; accessing an audio signal that has been captured using a microphone; detecting a control signal in the audio signal; and, responsive to detection of the control signal, invoking modification of an audio path of the conference call.

公开(公告)号：US20240404534A1

公开(公告)日：2024-12-05

申请号：US18327353

申请日：2023-06-01

Applicant: Cisco Technology, Inc.

Inventor： Mihailo Kolundzija ,  Raul Alejandro Casas ,  Hua Mu ,  Marek Jacek Adamiec

IPC: G10L19/018 ,  H04B1/69 ,  H04R3/00 ,  H04R29/00

Abstract: 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.

公开(公告)号：US11916686B2

公开(公告)日：2024-02-27

申请号：US17978730

申请日：2022-11-01

Applicant: Cisco Technology, Inc.

Inventor： Raul Alejandro Casas ,  Marcin Ciolek ,  Samer Hijazi ,  Dror Maydan ,  Hua Mu ,  Erik Panu ,  Christopher Rowen

IPC: H04L12/18 ,  G10L25/78 ,  H04M9/02 ,  G06F3/16 ,  H04M3/56

CPC classification number: H04L12/1813 ,  G06F3/165 ,  G10L25/78 ,  H04M3/568 ,  H04M9/02

Abstract: Systems and methods are disclosed for audio group identification for conferencing. For example, methods may include joining a conference call using a network interface; accessing an audio signal that has been captured using a microphone; detecting a control signal in the audio signal; and, responsive to detection of the control signal, invoking modification of an audio path of the conference call.