公开(公告)号：US20250038724A1

公开(公告)日：2025-01-30

申请号：US18917165

申请日：2024-10-16

Applicant: GRACENOTE, INC.

Inventor： Robert Coover ,  Jeffrey Scott ,  Markus K. Cremer ,  Aneesh Vartakavi

IPC: H03G3/30 ,  H03F3/183 ,  H03G3/02 ,  H03G7/00 ,  H04R3/00

Abstract: Apparatus, systems, articles of manufacture, and methods for volume adjustment are disclosed herein. An example method includes collecting data corresponding to a volume of an audio signal as the audio signal is output through a device, when an average volume of the audio signal does not satisfy a volume threshold for a specified timespan, determining a difference between the average volume and a desired volume, and applying a gain to the audio signal to adjust the volume of the audio signal to the desired volume, the gain determined based on the difference between the average volume and the desired volume.

公开(公告)号：US20240396513A1

公开(公告)日：2024-11-28

申请号：US18408437

申请日：2024-01-09

Applicant: Suzhou Zhisheng Semiconductor Technology Co., Ltd.

Inventor： Shuangxi DING ,  Hua CAO

IPC: H03G7/00 ,  H03G3/00 ,  H03G5/00 ,  H03G5/16

Abstract: The present application relates to a method and a circuit for dynamic range control based on peak level and RMS level double-level detection. The method includes: processing an input signal by an equalizer, to obtain an equalized signal; detecting a signal peak level and a signal RMS level of the equalized signal, to obtain the signal peak level and the signal RMS level; adjusting a parameter configuration of a dynamic range controller according to the signal peak level and the signal RMS level; adjusting a dynamic gain of the dynamic range controller according to the parameter configuration, and adjusting the equalized signal by using the adjusted gain, and then outputting the adjusted equalized signal. The method can not only control the dynamic range of the signal but also improve the clipping distortion of the signal.

公开(公告)号：US20240291456A1

公开(公告)日：2024-08-29

申请号：US18596259

申请日：2024-03-05

Applicant: Comcast Cable Communications, LLC

Inventor： Daisy HENDERSON

IPC: H03G7/00 ,  H03G3/30 ,  H04N21/81

CPC classification number: H03G7/007 ,  H03G3/3052 ,  H03G3/3089 ,  H04N21/8106 ,  H04N21/812

Abstract: Methods, systems, and apparatuses are described herein for improved processing audio in a video stream. A system may split audio in a frame of video content into multiple bands based on their audio levels. The system may then dynamically compress and dynamically normalize the audio level in each band. When dynamically compressing the bands, the system may determine, based on stored information, what audio level range is acceptable for an end user and may smooth and maintain the ranges of the audio to be within the acceptable range. The system may include the dynamically normalized and dynamically compressed frames as a second audio track in the video content. A computing device receiving the video content may select the second audio track during playback. If an end user selects the second audio track, the video is delivered with the modified sound of the second audio track.

公开(公告)号：US20240186972A1

公开(公告)日：2024-06-06

申请号：US18436667

申请日：2024-02-08

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Brett G. CROCKETT ,  Alan J. SEEFELDT

IPC: H03G3/30 ,  G10L21/038 ,  G10L25/21 ,  G10L25/51 ,  H03G1/00 ,  H03G7/00 ,  H03G9/00 ,  H04R3/00 ,  H04R3/04

CPC classification number: H03G3/3005 ,  G10L21/038 ,  G10L25/21 ,  G10L25/51 ,  H03G1/00 ,  H03G3/3089 ,  H03G7/007 ,  H03G9/005 ,  H04R3/00 ,  H04R3/04 ,  H04R2430/03

Abstract: In some embodiments, a method for processing an audio signal in an audio processing apparatus is disclosed. The method includes receiving an audio signal and a parameter, the parameter indicating a location of an auditory event boundary. An audio portion between consecutive auditory event boundaries constitutes an auditory event. The method further includes applying a modification to the audio signal based in part on an occurrence of the auditory event. The parameter may be generated by monitoring a characteristic of the audio signal and identifying a change in the characteristic.

公开(公告)号：US20240168706A1

公开(公告)日：2024-05-23

申请号：US18535526

申请日：2023-12-11

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

Inventor： Jeroen Koppens ,  Jeffrey Riedmiller ,  Kristofer Kjoerling ,  Alexander Stahlmann ,  Holger Hoerich ,  Alan J. Seefeldt

IPC: G06F3/16 ,  G10L19/16 ,  G10L21/0324 ,  H03G3/30 ,  H03G7/00 ,  H03G9/00 ,  H03G9/02 ,  H03G9/12 ,  H03G9/18 ,  H04S1/00 ,  H04S7/00

CPC classification number: G06F3/165 ,  G10L19/167 ,  G10L21/0324 ,  H03G3/3005 ,  H03G3/3089 ,  H03G7/002 ,  H03G7/007 ,  H03G9/005 ,  H03G9/025 ,  H03G9/12 ,  H03G9/18 ,  H04S1/00 ,  H04S7/30 ,  H04S2400/13

Abstract: In an audio encoder, for audio content received in a source audio format, default gains are generated based on a default dynamic range compression (DRC) curve, and non-default gains are generated for a non-default gain profile. Based on the default gains and non-default gains, differential gains are generated. An audio signal comprising the audio content, the default DRC curve, and differential gains is generated. In an audio decoder, the default DRC curve and the differential gains are identified from the audio signal. Default gains are re-generated based on the default DRC curve. Based on the combination of the re-generated default gains and the differential gains, operations are performed on the audio content extracted from the audio signal.

公开(公告)号：US20240136993A1

公开(公告)日：2024-04-25

申请号：US18480259

申请日：2023-10-02

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yong Ju LEE ,  Jae-hyoun YOO ,  Dae Young JANG ,  Soo Young PARK ,  Young Ho JEONG ,  Kyeongok KANG ,  Tae Jin LEE

IPC: H03G7/00

CPC classification number: H03G7/007

Abstract: A rendering method of an object-based audio signal and an apparatus for performing the same are provided. The rendering method of an object-based audio signal includes obtaining a rendered audio signal, performing clipping prevention on the rendered audio signal using a first limiter, mixing a signal output by the first limiter using a mixer, and performing clipping prevention on the mixed signal using a second limiter.

公开(公告)号：US11955940B2

公开(公告)日：2024-04-09

申请号：US18066074

申请日：2022-12-14

Applicant: Comcast Cable Communications, LLC

Inventor： Daisy Henderson

IPC: H03G7/00 ,  H03G3/30 ,  H04N21/81

CPC classification number: H03G7/007 ,  H03G3/3052 ,  H03G3/3089 ,  H04N21/8106 ,  H04N21/812

Abstract: Methods, systems, and apparatuses are described herein for improved processing audio in a video stream. A system may split audio in a frame of video content into multiple bands based on their audio levels. The system may then dynamically compress and dynamically normalize the audio level in each band. When dynamically compressing the bands, the system may determine, based on stored information, what audio level range is acceptable for an end user and may smooth and maintain the ranges of the audio to be within the acceptable range. The system may include the dynamically normalized and dynamically compressed frames as a second audio track in the video content. A computing device receiving the video content may select the second audio track during playback. If an end user selects the second audio track, the video is delivered with the modified sound of the second audio track.

公开(公告)号：US20240039498A1

公开(公告)日：2024-02-01

申请号：US18486816

申请日：2023-10-13

Applicant: GRACENOTE, INC.

Inventor： Robert Coover ,  Jeffrey Scott ,  Markus K. Cremer ,  Aneesh Vartakavi

IPC: H03G3/30 ,  H03F3/183 ,  H04R3/00 ,  H03G7/00 ,  H03G3/02

CPC classification number: H03G3/3005 ,  H03F3/183 ,  H04R3/00 ,  H03G7/002 ,  H03G3/02 ,  H03G3/3089 ,  H03F2200/03

Abstract: Apparatus, systems, articles of manufacture, and methods for volume adjustment are disclosed herein. An example method includes collecting data corresponding to a volume of an audio signal as the audio signal is output through a device, when an average volume of the audio signal does not satisfy a volume threshold for a specified timespan, determining a difference between the average volume and a desired volume, and applying a gain to the audio signal to adjust the volume of the audio signal to the desired volume, the gain determined based on the difference between the average volume and the desired volume.

公开(公告)号：US11877129B2

公开(公告)日：2024-01-16

申请号：US17421968

申请日：2020-01-10

Applicant: KRONOTON GMBH

Inventor： Gunnar Kron

IPC: H04B1/00 ,  H04R3/00 ,  H04S7/00 ,  H03G7/00 ,  H04S1/00

CPC classification number: H04R3/00 ,  H04S7/30 ,  H04R2430/01 ,  H04S1/002 ,  H04S2400/13

Abstract: The invention relates to an apparatus (100) having an input (11, 12, 15, 16) and an output (13, 14, 17, 18) and having an effect device with volume-regulated audio signals from an audio file or audio source, wherein the audio signals have input levels at an input of the effect device and output levels at an output of the effect device. In order to achieve background sound which is as optimal as possible, the invention proposes that each input level is assigned to a preset output level irrespective of the content of the audio file or audio source, wherein the input level is regulated to the output level.

公开(公告)号：US11799435B2

公开(公告)日：2023-10-24

申请号：US17646286

申请日：2021-12-28

Applicant: Realtek Semiconductor Corporation

Inventor： Chun Hao Lai ,  Tsung-Peng Chuang

IPC: H03G7/00 ,  H04R5/04 ,  H04R29/00

CPC classification number: H03G7/005 ,  H04R5/04 ,  H04R29/001 ,  H04R2430/01

Abstract: An audio processing device includes a signal processing circuit, a power switch circuit, a power amplifier and a detection circuit. The signal processing circuit is configured to process an audio input to generate an audio signal. The power switch circuit is configured to generate an operating voltage. The power amplifier is coupled with the signal processing circuit and the power switch circuit, and configured to drive a load circuit by the operating voltage according to the audio signal. The detection circuit is coupled with the signal processing circuit and the power switch circuit, configured to obtain a volume value from the audio signal and compare the volume value with a first volume threshold to generate a comparison result, and configured to control, according to the comparison result, the power switch circuit to set the operating voltage to have a corresponding one of multiple voltage levels.