US 12,015,875 B2
Method and system for real time audio in multi-point video conferencing
Håvard Graff, Oslo (NO); and Tulio Beloqui, Oslo (NO)
Assigned to Pexip AS, Oslo (NO)
Filed by Pexip AS, Oslo (NO)
Filed on Dec. 15, 2021, as Appl. No. 17/551,339.
Claims priority of application No. 20201393 (NO), filed on Dec. 18, 2020.
Prior Publication US 2022/0201252 A1, Jun. 23, 2022
Int. Cl. H04N 7/15 (2006.01); G10L 19/00 (2013.01); H04L 12/18 (2006.01); H04L 65/65 (2022.01); H04L 65/70 (2022.01)
CPC H04N 7/152 (2013.01) [G10L 19/0017 (2013.01); H04L 12/1827 (2013.01); H04L 65/65 (2022.05); H04L 65/70 (2022.05)] 16 Claims
OG exemplary drawing
 
1. A method of providing real time audio in a multi-point videoconferencing system having at least two videoconferencing endpoints in communication with a multipoint control unit (MCU), the method comprising:
capturing one or more input lossless digital audio streams on each of the at least two videoconferencing endpoints;
transmitting the one or more input lossless digital audio streams from each of the at least two videoconferencing endpoints to the MCU using a frame size in the range 0.25 ms-3 ms;
mixing, using the MCU, the one or more input lossless digital audio streams from each of the at least two videoconferencing endpoints into a plurality of output lossless digital audio streams;
transmitting a different one of the plurality of output lossless digital audio streams to each of the at least two videoconferencing endpoints using a frame size in the range 0.25 ms-3 ms;
playing back the plurality of output lossless digital audio streams on each of the at least two videoconferencing endpoints; and
compressing the one or more input lossless digital audio streams and the plurality of output lossless digital audio streams prior to transmission.