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1. 发明授权

US11195511B2 Method and system for creating object-based audio content 有权
公开(公告)号：US11195511B2
公开(公告)日：2021-12-07
申请号：US17260569
申请日：2019-07-17
申请人： DOLBY INTERNATIONAL AB , DOLBY LABORATORIES LICENSING CORPORATION
发明人： Toni Hirvonen , Daniel Arteaga , Eduard Aylon Pla , Alex Cabrer Manning , Lie Lu , Karl Jonas Roeden
IPC分类号： G10L13/10 , H04S7/00
摘要： Described herein is a method for creating object-based audio content from a text input for use in audio books and/or audio play, the method including the steps of: a) receiving the text input; b) performing a semantic analysis of the received text input; c) synthesizing speech and effects based on one or more results of the semantic analysis to generate one or more audio objects; d) generating metadata for the one or more audio objects; and e) creating the object-based audio content including the one or more audio objects and the metadata. Described herein are further a computer-based system including one or more processors configured to perform said method and a computer program product comprising a computer-readable storage medium with instructions adapted to carry out said method when executed by a device having processing capability.

2. 发明授权

US09990935B2 System aspects of an audio codec 有权
公开(公告)号：US09990935B2
公开(公告)日：2018-06-05
申请号：US14916545
申请日：2014-09-10
申请人： DOLBY LABORATORIES LICENSING CORPORATION , DOLBY INTERNATIONAL AB
发明人： Alexander Groeschel , Jens Popp , Martin Wolters , Jeffrey Riedmiller , Michael Ward , Karl Jonas Roeden , Holger Hoerich , Karsten Linzmeier , Tobias Friedrich
IPC分类号： G06F17/00 , G10L19/24 , G10L19/008 , H03H17/02 , H03H17/04 , H04S3/02 , G10L19/16 , G10L25/18 , G10L19/005
CPC分类号： G10L19/24 , G10L19/005 , G10L19/008 , G10L19/167 , G10L25/18 , H03H17/0275 , H03H17/0277 , H03H17/0455 , H04S3/02 , H04S2400/03 , H04S2400/05
摘要： The present document relates to the design of anti-aliasing and/or anti-imaging filters for resamplers using rational resampling factors. In particular, the present document relates to a method for implementing such anti-aliasing and/or anti-imaging filters with reduced computational complexity. In addition, the present document relates to further aspects of an audio encoding and decoding system, such as the phase relation between the channels of a multi-channel audio signal and/or the structure of the bitstream of an encoded audio signal.

3. 发明授权

US09841941B2 System and method for optimizing loudness and dynamic range across different playback devices 有权
公开(公告)号：US09841941B2
公开(公告)日：2017-12-12
申请号：US14761888
申请日：2014-01-15
申请人： DOLBY INTERNATIONAL AB , Dolby Laboratories Licensing Corporation
发明人： Jeffrey Riedmiller , Scott Gregory Norcross , Karl Jonas Roeden
IPC分类号： G06F17/00 , G06F3/16 , H03G9/00 , H04R29/00
CPC分类号： G06F3/165 , H03G9/005 , H04R29/00
摘要： Embodiments are directed to a method and system for receiving, in a bitstream, metadata associated with the audio data, and analyzing the metadata to determine whether a loudness parameter for a first group of audio playback devices are available in the bitstream. Responsive to determining that the parameters are present for the first group, the system uses the parameters and audio data to render audio. Responsive to determining that the loudness parameters are not present for the first group, the system analyzes one or more characteristics of the first group, and determines the parameter based on the one or more characteristics.

4. 发明申请

US20210295820A1 METHOD AND SYSTEM FOR CREATING OBJECT-BASED AUDIO CONTENT 有权
公开(公告)号：US20210295820A1
公开(公告)日：2021-09-23
申请号：US17260569
申请日：2019-07-17
申请人： DOLBY INTERNATIONAL AB , DOLBY LABORATORIES LICENSING CORPORATION
发明人： Toni Hirvonen , Daniel Arteaga , Eduard Aylon Pla , Alex Cabrer Manning , Lie Lu , Karl Jonas Roeden
IPC分类号： G10L13/10 , H04S7/00
摘要： Described herein is a method for creating object-based audio content from a text input for use in audio books and/or audio play, the method including the steps of: a) receiving the text input; b) performing a semantic analysis of the received text input; c) synthesizing speech and effects based on one or more results of the semantic analysis to generate one or more audio objects; d) generating metadata for the one or more audio objects; and e) creating the object-based audio content including the one or more audio objects and the metadata. Described herein are further a computer-based system including one or more processors configured to perform said method and a computer program product comprising a computer-readable storage medium with instructions adapted to carry out said method when executed by a device having processing capability.

5. 发明授权

US11080010B2 System and method for optimizing loudness and dynamic range across different playback devices 有权
公开(公告)号：US11080010B2
公开(公告)日：2021-08-03
申请号：US16889658
申请日：2020-06-01
申请人： DOLBY INTERNATIONAL AB , DOLBY LABORATORIES LICENSING CORPORATION
发明人： Jeffrey Riedmiller , Scott Gregory Norcross , Karl Jonas Roeden
IPC分类号： G06F3/16 , H03G9/00 , H04R29/00
摘要： Embodiments are directed to a method and system for receiving, in a bitstream, metadata associated with the audio data, and analyzing the metadata to determine whether a loudness parameter for a first group of audio playback devices are available in the bitstream. Responsive to determining that the parameters are present for the first group, the system uses the parameters and audio data to render audio. Responsive to determining that the loudness parameters are not present for the first group, the system analyzes one or more characteristics of the first group, and determines the parameter based on the one or more characteristics.

6. 发明授权

US10671339B2 System and method for optimizing loudness and dynamic range across different playback devices 审中-公开
公开(公告)号：US10671339B2
公开(公告)日：2020-06-02
申请号：US15835241
申请日：2017-12-07
申请人： Dolby Laboratories Licensing Corporation , DOLBY INTERNATIONAL AB
发明人： Jeffrey Riedmiller , Scott Gregory Norcross , Karl Jonas Roeden
IPC分类号： G06F3/16 , H03G9/00 , H04R29/00
摘要： Embodiments are directed to a method and system for receiving, in a bitstream, metadata associated with the audio data, and analyzing the metadata to determine whether a loudness parameter for a first group of audio playback devices are available in the bitstream. Responsive to determining that the parameters are present for the first group, the system uses the parameters and audio data to render audio. Responsive to determining that the loudness parameters are not present for the first group, the system analyzes one or more characteristics of the first group, and determines the parameter based on the one or more characteristics.

7. 发明授权

US09552818B2 Smooth configuration switching for multichannel audio rendering based on a variable number of received channels 有权
标题翻译：基于可变数量的接收通道，进行多通道音频渲染的平滑配置切换
公开(公告)号：US09552818B2
公开(公告)日：2017-01-24
申请号：US14406670
申请日：2013-06-14
申请人： DOLBY INTERNATIONAL AB
发明人： Heiko Purnhagen , Leif Sehlstrom , Karl Jonas Roeden , Kristofer Kjoerling , Lars Villemoes
IPC分类号： G10L19/00 , G10L19/008 , H04S3/00 , G10L19/18
CPC分类号： G10L19/008 , G10L19/0017 , G10L19/18 , H04S3/008 , H04S2400/03 , H04S2420/03
摘要： A decoding system reconstructs an n-channel audio signal on the basis of an input signal representing the audio signal, in different time frames, either by parametric coding or as n discretely coded channels. Parametric decoding uses a core signal and mixing parameters controlling a spatial synthesis stage, to which a downmix signal is supplied from a downmix stage. The downmix stage realizes a projection on the downmix signal based on an n-channel input signal, either a discretely coded signal or a core signal padded with neutral-valued channels. The padding may take place either on the decoding side (reduced parametric coding) or the encoding side. In an embodiment, an audio decoder (110) in the decoding system pads the core signal during an initial portion of each reduced parametrically coded time frame directly succeeding a discretely coded time frame and during a final portion of each reduced parametrically coded time frame directly preceding a discretely coded time frame.
摘要翻译：解码系统通过参数编码或作为n个离散编码的信道，在不同的时间帧中，基于表示音频信号的输入信号来重构n信道音频信号。参数解码使用核心信号和控制空间合成阶段的混合参数，下混合信号从下混合级提供给它。下混合阶段基于n沟道输入信号，即离散编码信号或用中性值通道填充的核心信号，实现对下混合信号的投影。填充可以在解码侧（缩减参数编码）或编码侧进行。在一个实施例中，解码系统中的音频解码器（110）在直接在离散编码的时间帧之后的每个缩减的参数编码的时间帧的初始部分和在直接前进的每个缩减的参数编码的时间帧的最后部分期间，离散编码的时间帧。

8. 发明授权

US11145318B2 Audio encoder and decoder for interleaved waveform coding 有权
公开(公告)号：US11145318B2
公开(公告)日：2021-10-12
申请号：US16169964
申请日：2018-10-24
申请人： DOLBY INTERNATIONAL AB
发明人： Kristofer Kjoerling , Robin Thesing , Harald Mundt , Heiko Purnhagen , Karl Jonas Roeden
IPC分类号： G10L19/00 , G10L19/02 , G10L21/038 , G10L21/0388 , G10L19/26
摘要： There is provided methods and apparatuses for decoding and encoding of audio signals. In particular, a method for decoding includes receiving a waveform-coded signal having a spectral content corresponding to a subset of the frequency range above a cross-over frequency. The waveform-coded signal is interleaved with a parametric high frequency reconstruction of the audio signal above the cross-over frequency. In this way an improved reconstruction of the high frequency bands of the audio signal is achieved.

9. 发明授权

US10438602B2 Audio decoder for interleaving signals 有权
公开(公告)号：US10438602B2
公开(公告)日：2019-10-08
申请号：US15641033
申请日：2017-07-03
申请人： DOLBY INTERNATIONAL AB
发明人： Kristofer Kjoerling , Heiko Purnhagen , Harald Mundt , Karl Jonas Roeden , Leif Sehlstrom
IPC分类号： G10L19/00 , G10L21/00 , G10L19/20 , G10L19/008 , G10L25/18 , H04S3/00 , G10L19/02 , G10L19/16
摘要： A method for decoding an encoded audio bitstream in an audio processing system is disclosed. The method includes extracting from the encoded audio bitstream a first waveform-coded signal comprising spectral coefficients corresponding to frequencies up to a first cross-over frequency for a time frame and performing parametric decoding at a second cross-over frequency for the time frame to generate a reconstructed signal. The second cross-over frequency is above the first cross-over frequency and the parametric decoding uses reconstruction parameters derived from the encoded audio bitstream to generate the reconstructed signal. The method also includes extracting from the encoded audio bitstream a second waveform-coded signal comprising spectral coefficients corresponding to a subset of frequencies above the first cross-over frequency for the time frame and interleaving the second waveform-coded signal with the reconstructed signal to produce an interleaved signal for the time frame.

10. 发明授权

US09799340B2 Efficient and scalable parametric stereo coding for low bitrate audio coding applications 有权
公开(公告)号：US09799340B2
公开(公告)日：2017-10-24
申请号：US15458135
申请日：2017-03-14
申请人： Dolby International AB
发明人： Fredrik Henn , Kristofer Kjoerling , Lars G. Liljeryd , Karl Jonas Roeden , Jonas Engdegard
IPC分类号： G10L19/008 , G10L19/26 , G10L21/038
CPC分类号： G10L19/008 , G10L19/265 , G10L21/038 , G10L25/21
摘要： The present invention provides improvements to prior art audio codecs that generate a stereo-illusion through post-processing of a received mono signal. These improvements are accomplished by extraction of stereo-image describing parameters at the encoder side, which are transmitted and subsequently used for control of a stereo generator at the decoder side. Furthermore, the invention bridges the gap between simple pseudo-stereo methods, and current methods of true stereo-coding, by using a new form of parametric stereo coding. A stereo-balance parameter is introduced, which enables more advanced stereo modes, and in addition forms the basis of a new method of stereo-coding of spectral envelopes, of particular use in systems where guided HFR (High Frequency Reconstruction) is employed. As a special case, the application of this stereo-coding scheme in scalable HFR-based codecs is described.

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