公开(公告)号：US20230217166A1

公开(公告)日：2023-07-06

申请号：US17913156

申请日：2021-03-19

申请人： Dolby International AB ,  Dolby Laboratories Licensing Corporation

发明人： Per EKSTRAND ,  Yuxing HAO ,  Xuemei YU

IPC分类号： H04R3/04

CPC分类号： H04R3/04 ,  H04R2430/03 ,  H04R2430/01

摘要： 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：US20230169989A1

公开(公告)日：2023-06-01

申请号：US17995406

申请日：2021-04-02

申请人： Dolby Laboratories Licensing Corporation

发明人： Daniel Paul DARCY ,  Xuemei YU ,  Clara Y-Phuong VO ,  Stewart MURRIE ,  Libin LUO

IPC分类号： G10L21/0364 ,  G06F3/16 ,  G10L21/0324 ,  G06F3/04847

CPC分类号： G10L21/0364 ,  G06F3/165 ,  G10L21/0324 ,  G06F3/04847

摘要： Novel methods and systems for creating and using user profiles for dialog boost and sound equalizer adjustment to compensate for various ambient sound situations. For creating profiles when not at the ambient sound, a synthesized/pre-recorded ambient noise can be mixed with the media to simulate the noise conditions.

公开(公告)号：US20220279300A1

公开(公告)日：2022-09-01

申请号：US17637446

申请日：2020-08-19

申请人： Dolby Laboratories Licensing Corporation

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

IPC分类号： H04S7/00

摘要： 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：US20220277766A1

公开(公告)日：2022-09-01

申请号：US17638839

申请日：2020-08-26

申请人： Dolby Laboratories Licensing Corporation

发明人： Xuemei YU

IPC分类号： G10L25/81 ,  G10L21/0208

摘要： 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.