公开(公告)号：US20190387346A1

公开(公告)日：2019-12-19

申请号：US16440540

申请日：2019-06-13

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Mark David DE BURGH ,  Timothy Alan PORT ,  David Matthew COOPER

IPC: H04S7/00 ,  H04S3/00 ,  H04R3/04

Abstract: Systems, methods, and computer program products of preparing an audio signal for playback on a monaural playback device A system receives an audio signal including one or more components, the one or more components including sound from one or more audio sources. The system processes the audio signal to create a monaural signal. The processing includes introducing one or more monaural cues into at least one component of the one or more components. The monaural signal maintains a presence of the one or more monaural cues. The system then provides the monaural signal to the monaural playback device or to a storage device. The one or more monaural cues are such that, if the monaural signal is played back to a listener using the monaural playback device, the listener experiences a perceived differentiation in direction of the one or more components and/or the one or more audio sources.

公开(公告)号：US20180115850A1

公开(公告)日：2018-04-26

申请号：US15568451

申请日：2016-04-19

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Mark David DE BURGH ,  Tet Fei YAP

IPC: H04S7/00 ,  H04S3/00 ,  H04R5/02

CPC classification number: H04S7/303 ,  H04R3/12 ,  H04R5/02 ,  H04R27/00 ,  H04R2227/001 ,  H04R2227/009 ,  H04S3/008 ,  H04S7/30 ,  H04S2400/01 ,  H04S2400/11 ,  H04S2400/13

Abstract: Methods a provided for improving an audio scene for people suffering from hearing loss or for adverse hearing environments. Audio objects may be prioritized. In some implementations, audio objects that correspond to dialogue may be assigned to a highest priority level. Other implementations may involve assigning the highest priority to other types of audio objects, such as audio objects that correspond to events. During a process of dynamic range compression, higher-priority objects may be boosted more, or cut less, than lower-priority objects. Some lower-priority audio objects may fall below the threshold of human hearing, in which case the audio objects may be dropped and not rendered.

公开(公告)号：US20220322004A1

公开(公告)日：2022-10-06

申请号：US17642211

申请日：2020-09-10

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Mark David DE BURGH ,  Ning WANG

IPC: H04R3/04

Abstract: Methods for performing dynamic range compression (DRC) on audio in a manner intended to produce output audio for playback by systems or devices with limited power handling capabilities and preferably also to reduce or prevent undesirable artifacts (e.g., pumping and/or breathing) in the output audio. Some embodiments perform the DRC so as to maximize average loudness (while preventing loss of quieter elements) during playback, and also to reduce or prevent distortion. Other aspects are systems or devices configured to perform embodiments of the method. In some embodiments, reduced DRC is applied when average loudness of the input audio approaches (or matches or exceeds) a target (e.g., a knee point for DRC, or a signal level near to a maximum playback level of the intended playback system), since such input audio is assumed to have already been compressed, and otherwise applying full DRC to the input audio.

公开(公告)号：US20180234069A1

公开(公告)日：2018-08-16

申请号：US15751828

申请日：2016-08-17

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Mark David DE BURGH

IPC: H03G5/16 ,  H03G5/00 ,  H03G9/00

Abstract: A method in a computing device configured to perform volume-levelling processing on input audio data by at least applying one or more filters to the input audio data, the computing device being configured to obtain an estimated difference between a target output loudness level and a loudness level associated with the input audio data, and to adapt the filter coefficients of the one or more filters based on the estimated difference. The method involves starting, or stopping, the volume-levelling processing. The method comprises gradually increasing, or decreasing, a weighting applied to the estimated difference, in response to obtaining an indication to start, or stop, the volume-levelling processing.