公开(公告)号：AU2017268582A1

公开(公告)日：2017-12-21

申请号：AU2017268582

申请日：2017-11-29

Applicant: APPLE INC

Inventor： HOLMAN TOMLINSON M ,  BAUMGARTE FRANK M ,  ALLAMANCHE ERIC A

IPC: G10L19/008

Abstract: An audio encoding device and an audio decoding device are described herein. The audio encoding device may examine a set of audio channels/channel groups representing a piece of sound program content and produce a set of ducking values to associate with one of the channels/channel groups. During playback of the piece of sound program content, the ducking values may be applied to all other channels/channel groups. Application of these ducking values may cause (1) the reduction in dynamic range of ducked channels/channel groups and/or (2) movement of channels/channel groups in the sound field. This ducking may improve intelligibility of audio in the non-ducked channel/channel group. For instance, a narration channel/channel group may be more clearly heard by listeners through the use of selective ducking of other channels/channel groups during playback.

公开(公告)号：AU2015236755B2

公开(公告)日：2017-08-31

申请号：AU2015236755

申请日：2015-02-26

Applicant: APPLE INC

Inventor： HOLMAN TOMLINSON M ,  BAUMGARTE FRANK M ,  ALLAMANCHE ERIC A

IPC: G10L19/008

Abstract: An audio encoding device and an audio decoding device are described herein. The audio encoding device may examine a set of audio channels/channel groups representing a piece of sound program content and produce a set of ducking values to associate with one of the channels/channel groups. During playback of the piece of sound program content, the ducking values may be applied to all other channels/channel groups. Application of these ducking values may cause (1) the reduction in dynamic range of ducked channels/channel groups and/or (2) movement of channels/channel groups in the sound field. This ducking may improve intelligibility of audio in the non-ducked channel/channel group. For instance, a narration channel/channel group may be more clearly heard by listeners through the use of selective ducking of other channels/channel groups during playback.

公开(公告)号：AU2014241222B2

公开(公告)日：2016-10-27

申请号：AU2014241222

申请日：2014-03-27

Applicant: APPLE INC

Inventor： BAUMGARTE FRANK ,  ALLAMANCHE ERIC A ,  STROMMER STEFAN K O

IPC: G10L21/0316 ,  G10L19/008 ,  H03G7/00

Abstract: An audio normalization gain value is applied to an audio signal to produce a normalized signal. The normalized signal is processed to compute dynamic range control (DRC) gain values in accordance with a selected one of several pre-defined DRC characteristics. The audio signal is encoded, and the DRC gain values are provided as metadata associated with the encoded audio signal. Several other embodiments are also described and claimed.

公开(公告)号：AU2019201701C1

公开(公告)日：2021-02-25

申请号：AU2019201701

申请日：2019-03-13

Applicant: APPLE INC

Inventor： HOLMAN TOMLINSON M ,  BAUMGARTE FRANK M ,  ALLAMANCHE ERIC A

IPC: G10L19/008

Abstract: An audio encoding device and an audio decoding device are described herein. The audio encoding device may examine a set of audio channels/channel groups representing a piece of sound program content and produce a set of ducking values to associate with one of the channels/channel groups. During playback of the piece of sound program content, the ducking values may be applied to all other channels/channel groups. Application of these ducking values may cause (1) the reduction in dynamic range of ducked channels/channel groups and/or (2) movement of channels/channel groups in the sound field. This ducking may improve intelligibility of audio in the non-ducked channel/channel group. For instance, a narration channel/channel group may be more clearly heard by listeners through the use of selective ducking of other channels/channel groups during playback.

公开(公告)号：AU2015236755A1

公开(公告)日：2016-07-07

申请号：AU2015236755

申请日：2015-02-26

Applicant: APPLE INC

Inventor： HOLMAN TOMLINSON M ,  BAUMGARTE FRANK M ,  ALLAMANCHE ERIC A

IPC: G10L19/008

Abstract: An audio encoding device and an audio decoding device are described herein. The audio encoding device may examine a set of audio channels/channel groups representing a piece of sound program content and produce a set of ducking values to associate with one of the channels/channel groups. During playback of the piece of sound program content, the ducking values may be applied to all other channels/channel groups. Application of these ducking values may cause (1) the reduction in dynamic range of ducked channels/channel groups and/or (2) movement of channels/channel groups in the sound field. This ducking may improve intelligibility of audio in the non-ducked channel/channel group. For instance, a narration channel/channel group may be more clearly heard by listeners through the use of selective ducking of other channels/channel groups during playback.

公开(公告)号：AU2014241222A1

公开(公告)日：2015-10-08

申请号：AU2014241222

申请日：2014-03-27

Applicant: APPLE INC

Inventor： BAUMGARTE FRANK ,  ALLAMANCHE ERIC A ,  STROMMER STEFAN K O

IPC: G10L19/008 ,  G10L21/0316 ,  H03G7/00

Abstract: An audio normalization gain value is applied to an audio signal to produce a normalized signal. The normalized signal is processed to compute dynamic range control (DRC) gain values in accordance with a selected one of several pre-defined DRC characteristics. The audio signal is encoded, and the DRC gain values are provided as metadata associated with the encoded audio signal. Several other embodiments are also described and claimed.

公开(公告)号：ES2994484T3

公开(公告)日：2025-01-24

申请号：ES19170552

申请日：2014-03-27

Applicant: APPLE INC

Inventor： BAUMGARTE FRANK ,  ALLAMANCHE ERIC A ,  STROMMER STEFAN K O

IPC: G10L19/008 ,  G10L21/0316 ,  H03G7/00

Abstract: Se aplica un valor de ganancia de normalización de audio a una señal de audio para producir una señal normalizada. La señal normalizada se procesa para calcular valores de ganancia de control de rango dinámico (DRC) de acuerdo con una característica DRC predefinida seleccionada. La señal de audio se codifica y los valores de ganancia DRC se proporcionan como metadatos asociados con la señal de audio codificada. También se describen y reivindican otras realizaciones. (Traducción automática con Google Translate, sin valor legal)

公开(公告)号：ES2738494T3

公开(公告)日：2020-01-23

申请号：ES14724887

申请日：2014-03-27

Applicant: APPLE INC

Inventor： BAUMGARTE FRANK ,  ALLAMANCHE ERIC A ,  STROMMER STEFAN K O

IPC: G10L19/008 ,  G10L21/0316 ,  H03G7/00

Abstract: Un procedimiento para descodificar audio durante el procesamiento de reproducción, que comprende: recibir una señal de audio codificada; recibir metadatos asociados con la señal de audio codificada, con los metadatos incluyen una pluralidad de valores de ganancia control de rango dinámico, DRC, y un índice de una característica de DRC previamente seleccionada de acuerdo con la cual los valores de ganancia de DRC se calcularon cuando se estaba generando la señal de audio codificada; descodificar la señal de audio codificada para producir una señal de audio descodificada; seleccionar una característica de DRC actual de entre una pluralidad de características de DRC disponibles, de acuerdo con el índice, y producir nuevos valores de ganancia DRC basados en la característica de DRC actual i) aplicando la pluralidad de valores de ganancia DRC de los metadatos a la característica de DRC actual, invirtiendo así las operaciones realizadas previamente por un procesador DRC en una etapa de codificación para obtener una pluralidad de niveles de entrada de DRC o sonoridad a corto plazo, ii) seleccionando una característica de DRC de la etapa de descodificación de entre una pluralidad de características de DRC de la etapa de descodificación, y iii) aplicar la pluralidad de niveles de sonoridad a corto plazo o entrada de DRC, obtenida en i), a la característica de DRC de la etapa de descodificación seleccionada para generar los nuevos valores de ganancia de DRC; y aplicar los nuevos valores de ganancia DRC a la señal de audio descodificada para producir una señal de audio ajustada por DRC durante el procesamiento de la reproducción.

公开(公告)号：AU2019201701A1

公开(公告)日：2019-04-04

申请号：AU2019201701

申请日：2019-03-13

Applicant: APPLE INC

Inventor： HOLMAN TOMLINSON M ,  BAUMGARTE FRANK M ,  ALLAMANCHE ERIC A

IPC: G10L19/008

Abstract: An audio encoding device and an audio decoding device are described herein. The audio encoding device may examine a set of audio channels/channel groups representing a piece of sound program content and produce a set of ducking values to associate with one of the channels/channel groups. During playback of the piece of sound program content, the ducking values may be applied to all other channels/channel groups. Application of these ducking values may cause (1) the reduction in dynamic range of ducked channels/channel groups and/or (2) movement of channels/channel groups in the sound field. This ducking may improve intelligibility of audio in the non-ducked channel/channel group. For instance, a narration channel/channel group may be more clearly heard by listeners through the use of selective ducking of other channels/channel groups during playback.

公开(公告)号：AU2019201701B2

公开(公告)日：2020-09-03

申请号：AU2019201701

申请日：2019-03-13

Applicant: APPLE INC

Inventor： HOLMAN TOMLINSON M ,  BAUMGARTE FRANK M ,  ALLAMANCHE ERIC A

IPC: G10L19/008

Abstract: An audio encoding device and an audio decoding device are described herein. The audio encoding device may examine a set of audio channels/channel groups representing a piece of sound program content and produce a set of ducking values to associate with one of the channels/channel groups. During playback of the piece of sound program content, the ducking values may be applied to all other channels/channel groups. Application of these ducking values may cause (1) the reduction in dynamic range of ducked channels/channel groups and/or (2) movement of channels/channel groups in the sound field. This ducking may improve intelligibility of audio in the non-ducked channel/channel group. For instance, a narration channel/channel group may be more clearly heard by listeners through the use of selective ducking of other channels/channel groups during playback.