US 11,736,307 B2
Automatic discovery and localization of voice degradation faults using ultrasound techniques
Rohit Bahl, Kanata (CA)
Assigned to CISCO TECHNOLOGY, INC., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Apr. 15, 2021, as Appl. No. 17/231,316.
Prior Publication US 2022/0337442 A1, Oct. 20, 2022
Int. Cl. H04L 12/18 (2006.01); G10L 19/24 (2013.01); G10L 19/16 (2013.01)
CPC H04L 12/1827 (2013.01) [G10L 19/167 (2013.01); G10L 19/24 (2013.01); H04L 12/1822 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
at a local participant device:
establishing audio connections with remote participant devices over a network for an online voice conference to be supervised by a controller;
generating, using an audio codec, ultrasound signals encoded into audio packets, wherein the ultrasound signals are encoded with a digital identifier of the local participant device;
transmitting the audio packets to, and for detection by, the remote participant devices;
collecting information conveyed in ultrasound confirmation messages transmitted by the remote participant devices to the controller in response to the ultrasound signals, wherein each ultrasound confirmation message includes a data packet having an identifier of a remote participant device, the digital identifier of the local participant device, and an indication of whether the remote participant device successfully detected one of the ultrasound signals;
identifying which of the remote participant devices detected the ultrasound signals based on the information; and
localizing degraded voice quality to particular ones of the local participant device and the remote participant devices based, at least in part, on results of identifying.