公开(公告)号：US12272376B2

公开(公告)日：2025-04-08

申请号：US17638839

申请日：2020-08-26

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Xuemei Yu

IPC: G10L25/81 ,  G10L21/0208 ,  G10L25/60 ,  H04R1/10 ,  H04R5/04 ,  G10L25/78

Abstract: A method of enhancing dialog intelligibility in an audio signal, comprising determining a speech confidence score that the audio content includes speech content, determining a music confidence score that the audio content includes music correlated content, in response to the speech confidence score, and applying a user selected gain of selected frequency bands of the audio signal to obtain a dialogue enhanced audio signal. The user selected gain is smoothed by an adaptive smoothing algorithm, an impact of past frames in said smoothing algorithm being determined by a smoothing factor, the smoothing factor being calculated in response to the music confidence score, and having a relatively higher value for content having a relatively higher music confidence score and a relatively lower value for speech content having a relatively lower music confidence score, so as to increase the impact of past frames on the dialogue enhancement of music correlated content.

公开(公告)号：US12101613B2

公开(公告)日：2024-09-24

申请号：US17913156

申请日：2021-03-19

Applicant: Dolby International AB ,  Dolby Laboratories Licensing Corporation

Inventor： Per Ekstrand ,  Yuxing Hao ,  Xuemei Yu

IPC: H04R3/04

CPC classification number: H04R3/04 ,  H04R2430/01 ,  H04R2430/03

Abstract: A method of audio processing includes generating harmonics in a hybrid complex quadrature mirror filter domain. Generating the harmonics may include multiplication, using a feedback delay loop, and dynamic compression. The harmonics may be generated based on one or more hybrid sub-bands of the complex transform domain signal.

公开(公告)号：US11895479B2

公开(公告)日：2024-02-06

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

CPC classification number: H04S7/30 ,  H04S2420/01

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：US20240187806A1

公开(公告)日：2024-06-06

申请号：US18547494

申请日：2022-02-25

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： C. Phillip Brown ,  Yuxing Hao ,  Xuemei Yu ,  Zilong Yang

IPC: H04S5/00 ,  H04S7/00

CPC classification number: H04S5/00 ,  H04S7/305 ,  H04S2400/01 ,  H04S2400/05

Abstract: Systems and methods for providing a binaural virtualization by upmixing the left and right input signals to produce left, right, and center channels, mixing the left and right input signals with the upmixed left and right channels respectively at a proportion given by a center-only reverb amount value, then reverberating the output of the mixing prior to virtualization. This can be further simplified by mode switching between two different filtering modes: a standard mode and a simplified mode.