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    Audio Encoder and Decoder for Interleaved Waveform Coding
    2.
    发明申请
    Audio Encoder and Decoder for Interleaved Waveform Coding 审中-公开
    用于交织波形编码的音频编码器和解码器

    公开(公告)号：US20170018279A1

    公开(公告)日：2017-01-19

    申请号：US15279365

    申请日：2016-09-28

    Applicant: DOLBY INTERNATIONAL AB

    Inventor： Kristofer KJOERLING ,  Robin THESING ,  Harald MUNDT ,  Heiko PURNHAGEN ,  Karl Jonas ROEDEN

    IPC: G10L19/02 ,  G10L19/26

    CPC classification number: G10L19/0208 ,  G10L19/02 ,  G10L19/0212 ,  G10L19/26 ,  G10L21/038 ,  G10L21/0388

    Abstract: 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.

    Abstract translation: 提供了用于对音频信号进行解码和编码的方法和装置。 特别地，一种解码方法包括：接收波形编码信号，该波形编码信号具有对应于高于交叉频率的频率范围子集的频谱内容。 波形编码信号与高于交叉频率的音频信号的参数高频重构进行交织。 以这种方式，实现了音频信号的高频带的改进的重建。

    METHOD AND UNIT FOR PERFORMING DYNAMIC RANGE CONTROL
    3.
    发明公开
    METHOD AND UNIT FOR PERFORMING DYNAMIC RANGE CONTROL 审中-公开

    公开(公告)号：US20230198488A1

    公开(公告)日：2023-06-22

    申请号：US17921279

    申请日：2021-05-17

    Applicant: DOLBY INTERNATIONAL AB

    Inventor： Stanislaw GORLOW ,  Robin THESING

    IPC: H03G9/02 ,  H03G7/00

    CPC classification number: H03G9/025 ,  H03G7/007

    Abstract: The present document describes a dynamic range control unit (210) configured to apply dynamic range control, referred to as DRC, to an audio signal (211). The DRC unit (210) is configured to downsample a subband signal (212) derived from the audio signal (211), to provide a downsampled subband signal (321), to determine a DRC gain (329) based on the downsampled subband signal (321), and to apply the DRC gain (329) to the subband signal (212), to provide a compressed subband signal (213) of a compressed audio signal (214).

    Audio Encoder and Decoder for Interleaved Waveform Coding
    5.
    发明申请
    Audio Encoder and Decoder for Interleaved Waveform Coding 有权
    用于交织波形编码的音频编码器和解码器

    公开(公告)号：US20160042742A1

    公开(公告)日：2016-02-11

    申请号：US14781891

    申请日：2014-04-04

    Applicant: DOLBY INTERNATIONAL AB

    Inventor： Kristofer KJOERLING ,  Robin THESING ,  Harald MUNDT ,  Heiko PURNHAGEN ,  Karl Jonas ROEDEN

    IPC: G10L19/02 ,  G10L21/0388

    CPC classification number: G10L19/0208 ,  G10L19/02 ,  G10L19/0212 ,  G10L19/26 ,  G10L21/038 ,  G10L21/0388

    Abstract: 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.

    Abstract translation: 提供了用于对音频信号进行解码和编码的方法和装置。 特别地，一种解码方法包括：接收波形编码信号，该波形编码信号具有对应于高于交叉频率的频率范围子集的频谱内容。 波形编码信号与高于交叉频率的音频信号的参数高频重构进行交织。 以这种方式，实现了音频信号的高频带的改进的重建。

    INTEGRATED RECONSTRUCTION AND RENDERING OF AUDIO SIGNALS
    7.
    发明申请
    INTEGRATED RECONSTRUCTION AND RENDERING OF AUDIO SIGNALS 有权

    公开(公告)号：US20210090580A1

    公开(公告)日：2021-03-25

    申请号：US17114192

    申请日：2020-12-07

    Applicant: DOLBY INTERNATIONAL AB

    Inventor： Klaus PEICHL ,  Tobias FRIEDRICH ,  Robin THESING ,  Heiko PURNHAGEN ,  Martin WOLTERS

    IPC: G10L19/008 ,  H04S3/00 ,  H04S7/00

    Abstract: A method for rendering an audio output based on an audio data stream including M audio signals, side information including a series of reconstruction instances of a reconstruction matrix C and first timing data, the side information allowing reconstruction of N audio objects from the M audio signals, and object metadata defining spatial relationships between the N audio objects. The method includes generating a synchronized rendering matrix based on the object metadata, the first timing data, and information relating to a current playback system configuration, the synchronized rendering matrix having a rendering instance for each reconstruction instance, multiplying each reconstruction instance with a corresponding rendering instance to form a corresponding instance of an integrated rendering matrix, and applying the integrated rendering matrix to the audio signals in order to render an audio output.

    INTEGRATED RECONSTRUCTION AND RENDERING OF AUDIO SIGNALS
    8.
    发明申请
    INTEGRATED RECONSTRUCTION AND RENDERING OF AUDIO SIGNALS 审中-公开

    公开(公告)号：US20200005801A1

    公开(公告)日：2020-01-02

    申请号：US16486493

    申请日：2018-03-06

    Applicant: DOLBY INTERNATIONAL AB

    Inventor： Klaus PEICHL ,  Tobias FRIEDRICH ,  Robin THESING ,  Heiko PURNHAGEN ,  Martin WOLTERS

    IPC: G10L19/008 ,  H04S3/00 ,  H04S7/00

    Abstract: A method for rendering an audio output based on an audio data stream including M audio signals, side information including a series of reconstruction instances of a reconstruction matrix C and first timing data, the side information allowing reconstruction of N audio objects from the M audio signals, and object metadata defining spatial relationships between the N audio objects. The method includes generating a synchronized rendering matrix based on the object metadata, the first timing data, and information relating to a current playback system configuration, the synchronized rendering matrix having a rendering instance for each reconstruction instance, multiplying each reconstruction instance with a corresponding rendering instance to form a corresponding instance of an integrated rendering matrix, and applying the integrated rendering matrix to the audio signals in order to render an audio output.

    Methods and Systems for Efficient Recovery of High Frequency Audio Content
    9.
    发明申请
    Methods and Systems for Efficient Recovery of High Frequency Audio Content 有权

    公开(公告)号：US20170221491A1

    公开(公告)日：2017-08-03

    申请号：US15494195

    申请日：2017-04-21

    Applicant: DOLBY INTERNATIONAL AB

    Inventor： Robin THESING ,  Michael SCHUG

    IPC: G10L19/008 ,  G10L19/028 ,  G10L19/16

    CPC classification number: G10L19/008 ,  G10L19/0204 ,  G10L19/028 ,  G10L19/167 ,  G10L21/0388

    Abstract: The present document relates to the technical field of audio coding, decoding and processing. It specifically relates to methods of recovering high frequency content of an audio signal from low frequency content of the same audio signal in an efficient manner. A method for determining a first banded tonality value for a first frequency subband of an audio signal is described. The first banded tonality value is used for approximating a high frequency component of the audio signal based on a low frequency component of the audio signal. The method comprises determining a set of transform coefficients in a corresponding set of frequency bins based on a block of samples of the audio signal; determining a set of bin tonality values for the set of frequency bins using the set of transform coefficients, respectively; and combining a first subset of two or more of the set of bin tonality values for two or more corresponding adjacent frequency bins of the set of frequency bins lying within the first frequency subband, thereby yielding the first banded tonality value for the first frequency subband.

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