公开(公告)号：US20220366933A1

公开(公告)日：2022-11-17

申请号：US17683662

申请日：2022-03-01

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Chunmao ZHANG ,  Lianwu CHEN ,  Ziyu YANG ,  Joshua Brandon LANDO ,  David Matthew FISCHER ,  Lie LU

IPC: G10L25/78 ,  G06N3/08 ,  G10L25/30 ,  H04R5/033 ,  H04R5/04 ,  H04S1/00

Abstract: An apparatus and method of blind detection of binauralized audio. If the input content is detected as binaural, a second binauralization may be avoided. In this manner, the user experience avoids audio artifacts introduced by multiple binauralizations.

公开(公告)号：US20220279300A1

公开(公告)日：2022-09-01

申请号：US17637446

申请日：2020-08-19

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Qingyuan BIN ,  Libin LUO ,  Ziyu YANG ,  Zhiwei SHUANG ,  Xuemei YU ,  Guiping WANG

IPC: H04S7/00

Abstract: A method for steering binauralization of audio is provided. The method comprises steps of: receiving (410) an audio input signal, calculating (430) a confidence value indicating a likelihood that a current audio frame of the audio input signal comprises binauralized audio; determining (450) a state signal based on the confidence value; determining (460) a steering signal, based on the first confidence value, the state signal and an energy value of the audio frame; and generating (470) an audio output signal with steered binauralization by processing the audio input signal according to the steering signal.

公开(公告)号：US20250166652A1

公开(公告)日：2025-05-22

申请号：US18835248

申请日：2023-02-06

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Ziyu YANG ,  Lie LU ,  Zhiwei SHUANG

IPC: G10L21/0224 ,  G06F3/16 ,  G10L21/034

Abstract: Volume leveling of an audio signal using a volume leveling control signal. The method comprises determining a noise reliability ratio w(n) as a ratio of noise-like frames over all frames in a current time segment, determining a PGC noise confidence score XPGN(n) indicating a likelihood that professionally generated content, PGC, noise is present in the time segment, and determining, for the time segment, whether the noise reliability ratio is above a predetermined threshold. When the noise reliability ratio is above the predetermined threshold, the volume leveling control signal is updated based on the PGC noise confidence score, and when the noise reliability ratio is below the predetermined threshold, the volume leveling control signal is left unchanged. Volume leveling is improved by preventing boosting of e.g. phone-recorded environmental noise in UGC, while keeping original behavior for other types of content.

公开(公告)号：US20210056984A1

公开(公告)日：2021-02-25

申请号：US17050786

申请日：2019-04-24

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Chunmao ZHANG ,  Lianwu CHEN ,  Ziyu YANG ,  Joshua Brandon LANDO ,  David Matthew FISCHER ,  Lie LU

IPC: G10L25/78 ,  G10L25/30 ,  H04R5/04 ,  H04R5/033 ,  H04S1/00 ,  G06N3/08

Abstract: An apparatus and method of blind detection of binauralized audio. If the input content is detected as binaural, a second binauralization may be avoided. In this manner, the user experience avoids audio artifacts introduced by multiple binauralizations.