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公开(公告)号：US20150279379A1
公开(公告)日：2015-10-01
申请号：US14735663
申请日：2015-06-10
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Michael M. Truman , Mark S. Vinton
CPC classification number: G10L19/0208 , G10L19/0017 , G10L19/002 , G10L19/012 , G10L19/02 , G10L19/0204 , G10L19/0212 , G10L19/028 , G10L19/03 , G10L19/06 , G10L19/16 , G10L19/167 , G10L19/173 , G10L19/26 , G10L19/265 , G10L21/00 , G10L21/038 , G10L21/0388
Abstract: A method for generating a reconstructed audio signal having a baseband portion and a highband portion is disclosed. The method includes deformatting an encoded audio signal into a first part and a second part and decoding the first part to obtain a decoded baseband audio signal. The method also includes extracting an estimated spectral envelope of the highband portion and a noise parameter from the second part and filtering the decoded baseband audio signal to obtain a plurality of subband signals. The method further includes generating a high-frequency reconstructed signal by copying a number of consecutive subband signals of the plurality of subband signals and adjusting a spectral envelope of the high-frequency reconstructed signal based on the estimated spectral envelope of the highband portion to obtain an envelope adjusted high-frequency signal.
Abstract translation: 公开了一种用于产生具有基带部分和高带部分的重构音频信号的方法。 该方法包括将经编码的音频信号分解成第一部分和第二部分，并对第一部分进行解码以获得解码的基带音频信号。 该方法还包括从第二部分提取高频部分的估计频谱包络和噪声参数，并对解码的基带音频信号进行滤波以获得多个子带信号。 该方法还包括通过复制多个子带信号中的多个连续的子带信号来产生高频重构信号，并且基于高频部分的估计频谱包络来调整高频重构信号的频谱包络，以获得高频重构信号 信封调整高频信号。
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公开(公告)号：US20150243295A1
公开(公告)日：2015-08-27
申请号：US14709109
申请日：2015-05-11
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Michael M. Truman , Mark S. Vinton
IPC: G10L21/00
CPC classification number: G10L19/0208 , G10L19/0017 , G10L19/002 , G10L19/012 , G10L19/02 , G10L19/0204 , G10L19/0212 , G10L19/028 , G10L19/03 , G10L19/06 , G10L19/16 , G10L19/167 , G10L19/173 , G10L19/26 , G10L19/265 , G10L21/00 , G10L21/038 , G10L21/0388
Abstract: A method for reconstructing an audio signal having a baseband portion and a highband portion is disclosed. The method includes decoding an encoded audio signal to obtain a decoded baseband audio signal, filtering the decoded baseband audio signal to obtain subband signals, and generating a high-frequency reconstructed signal by copying a number of consecutive subband signals. The method also includes adjusting a spectral envelope of the high-frequency reconstructed signal based on an estimated spectral envelope of the highband portion extracted from the encoded audio signal to obtain an envelope adjusted high-frequency signal, generating a noise component based on a noise parameter extracted from the encoded audio signal, and adding the noise component to the envelope adjusted high-frequency signal to obtain a noise and envelope adjusted high-frequency signal.
Abstract translation: 公开了一种用于重建具有基带部分和高频带部分的音频信号的方法。 该方法包括解码编码音频信号以获得解码的基带音频信号，对解码的基带音频信号进行滤波以获得子带信号，以及通过复制多个连续子带信号来产生高频重构信号。 该方法还包括基于从编码音频信号提取的高频部分的估计频谱包络来调整高频重构信号的频谱包络，以获得包络调整的高频信号，基于噪声参数产生噪声分量 从编码音频信号中提取，并将噪声分量加到包络调节的高频信号上以获得噪声和包络调整的高频信号。
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公开(公告)号：US11671779B2
公开(公告)日：2023-06-06
申请号：US17492683
申请日：2021-10-04
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Louis D. Fielder , Zhiwei Shuang , Grant A. Davidson , Xiguang Zheng , Mark S. Vinton
CPC classification number: H04S3/004 , G10K15/08 , H04S5/005 , H04S7/302 , H04S7/304 , H04S2400/01 , H04S2420/01
Abstract: The present disclosure relates to reverberation generation for headphone virtualization. A method of generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization is described. In the method, directionally-controlled reflections are generated, wherein directionally-controlled reflections impart a desired perceptual cue to an audio input signal corresponding to a sound source location. Then at least the generated reflections are combined to obtain the one or more components of the BRIR. Corresponding system and computer program products are described as well.
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Patent Agency Ranking
公开(公告)号：US20220103959A1
公开(公告)日：2022-03-31
申请号：US17492683
申请日：2021-10-04
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Louis D. Fielder , Zhiwei Shuang , Grant A. Davidson , Xiguang Zheng , Mark S. Vinton
Abstract: The present disclosure relates to reverberation generation for headphone virtualization. A method of generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization is described. In the method, directionally-controlled reflections are generated, wherein directionally-controlled reflections impart a desired perceptual cue to an audio input signal corresponding to a sound source location. Then at least the generated reflections are combined to obtain the one or more components of the BRIR. Corresponding system and computer program products are described as well.
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公开(公告)号：US11140501B2
公开(公告)日：2021-10-05
申请号：US16986308
申请日：2020-08-06
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Louis D. Fielder , Zhiwei Shuang , Grant A. Davidson , Xiguang Zheng , Mark S. Vinton
Abstract: The present disclosure relates to reverberation generation for headphone virtualization. A method of generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization is described. In the method, directionally-controlled reflections are generated, wherein directionally-controlled reflections impart a desired perceptual cue to an audio input signal corresponding to a sound source location. Then at least the generated reflections are combined to obtain the one or more components of the BRIR. Corresponding system and computer program products are described as well.
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公开(公告)号：US10750306B2
公开(公告)日：2020-08-18
申请号：US16510849
申请日：2019-07-12
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Louis D. Fielder , Zhiwei Shuang , Grant A. Davidson , Xiguang Zheng , Mark S. Vinton
Abstract: The present disclosure relates to reverberation generation for headphone virtualization. A method of generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization is described. In the method, directionally-controlled reflections are generated, wherein directionally-controlled reflections impart a desired perceptual cue to an audio input signal corresponding to a sound source location. Then at least the generated reflections are combined to obtain the one or more components of the BRIR. Corresponding system and computer program products are described as well.
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公开(公告)号：US20190172472A1
公开(公告)日：2019-06-06
申请号：US16268448
申请日：2019-02-05
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Michael M. Truman , Mark S. Vinton
IPC: G10L19/02 , G10L21/0388 , G10L19/16 , G10L19/26 , G10L19/002 , G10L21/00 , G10L19/06 , G10L19/028 , G10L19/00 , G10L19/03 , G10L19/012 , G10L21/038
CPC classification number: G10L19/0208 , G10L19/0017 , G10L19/002 , G10L19/012 , G10L19/02 , G10L19/0204 , G10L19/0212 , G10L19/028 , G10L19/03 , G10L19/06 , G10L19/16 , G10L19/167 , G10L19/173 , G10L19/26 , G10L19/265 , G10L21/00 , G10L21/038 , G10L21/0388
Abstract: According to an aspect of the present invention, a method for reconstructing an audio signal having a baseband portion and a highband portion is disclosed. The method includes obtaining a decoded baseband audio signal by decoding an encoded audio signal and obtaining a plurality of subband signals by filtering the decoded baseband audio signal. The method further includes generating a high-frequency reconstructed signal by copying a number of consecutive subband signals of the plurality of subband signals and obtaining an envelope adjusted high-frequency signal. The method further includes generating a noise component based on a noise parameter. Finally, the method includes adjusting a phase of the high-frequency reconstructed signal and obtaining a time-domain reconstructed audio signal by combining the decoded baseband audio signal and the combined high-frequency signal to obtain a time-domain reconstructed audio signal.
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公开(公告)号：US09947328B2
公开(公告)日：2018-04-17
申请号：US15702451
申请日：2017-09-12
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Michael M. Truman , Mark S. Vinton
IPC: G10L21/038 , G10L21/0388 , G10L19/02 , G10L19/028 , G10L19/26
CPC classification number: G10L19/0208 , G10L19/0017 , G10L19/002 , G10L19/012 , G10L19/02 , G10L19/0204 , G10L19/0212 , G10L19/028 , G10L19/03 , G10L19/06 , G10L19/16 , G10L19/167 , G10L19/173 , G10L19/26 , G10L19/265 , G10L21/00 , G10L21/038 , G10L21/0388
Abstract: According to an aspect of the present invention, a method for reconstructing an audio signal having a baseband portion and a highband portion is disclosed. The method includes obtaining a decoded baseband audio signal by decoding an encoded audio signal and obtaining a plurality of subband signals by filtering the decoded baseband audio signal. The method further includes generating a high-frequency reconstructed signal by copying a number of consecutive subband signals of the plurality of subband signals and obtaining an envelope adjusted high-frequency signal. The method further includes generating a noise component based on a noise parameter. Finally, the method includes adjusting a phase of the high-frequency reconstructed signal and obtaining a time-domain reconstructed audio signal by combining the decoded baseband audio signal and the combined high-frequency signal to obtain a time-domain reconstructed audio signal.
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