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1.发明授权Spatial audio analysis and synthesis for binaural reproduction and format conversion 有权双耳再现和格式转换的空间音频分析和综合公开(公告)号：US08374365B2
公开(公告)日：2013-02-12
申请号：US12243963
申请日：2008-10-01
申请人： Michael M. Goodwin , Jean-Marc Jot , Mark Dolson
发明人： Michael M. Goodwin , Jean-Marc Jot , Mark Dolson
IPC分类号： H04R5/02
CPC分类号： H04S1/002 , G10L19/008 , G10L19/173
摘要： A frequency-domain method for format conversion or reproduction of 2-channel or multi-channel audio signals such as recordings is described. The reproduction is based on spatial analysis of directional cues in the input audio signal and conversion of these cues into audio output signal cues for two or more channels in the frequency domain.
摘要翻译： 描述用于格式转换或再现诸如记录的2声道或多声道音频信号的频域方法。 再现是基于输入音频信号中的方向提示的空间分析，并且将这些提示转换成频域中两个或更多个频道的音频输出信号提示。
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2.发明申请SPATIAL AUDIO ANALYSIS AND SYNTHESIS FOR BINAURAL REPRODUCTION AND FORMAT CONVERSION 有权空间音频分析和合成生物复制和格式转换公开(公告)号：US20090252356A1
公开(公告)日：2009-10-08
申请号：US12243963
申请日：2008-10-01
申请人： Michael M. GOODWIN , Jean-Marc Jot , Mark Dolson
发明人： Michael M. GOODWIN , Jean-Marc Jot , Mark Dolson
IPC分类号： H04R5/02
CPC分类号： H04S1/002 , G10L19/008 , G10L19/173
摘要： A frequency-domain method for format conversion or reproduction of 2-channel or multi-channel audio signals such as recordings is described. The reproduction is based on spatial analysis of directional cues in the input audio signal and conversion of these cues into audio output signal cues for two or more channels in the frequency domain.
摘要翻译： 描述用于格式转换或再现诸如记录的2声道或多声道音频信号的频域方法。 再现是基于输入音频信号中的方向提示的空间分析，并且将这些提示转换成频域中两个或更多个频道的音频输出信号提示。
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公开(公告)号：US09014377B2
公开(公告)日：2015-04-21
申请号：US12048180
申请日：2008-03-13
申请人： Michael M. Goodwin , Jean-Marc Jot
发明人： Michael M. Goodwin , Jean-Marc Jot
CPC分类号： G10L19/173 , G10L19/008 , H04S1/002 , H04S3/008
摘要： An audio signal is processed in the frequency domain to convert an input signal format to an output signal format. That is, a multichannel audio signal intended for playback over a predefined speaker layout can be formatted to achieve spatial reproduction over a different layout comprising a different number of speakers.
摘要翻译： 在频域中处理音频信号以将输入信号格式转换为输出信号格式。 也就是说，旨在用于在预定义扬声器布局上重放的多声道音频信号可以被格式化以通过包括不同数量的扬声器的不同布局实现空间再现。
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4.发明申请CORRELATION-BASED METHOD FOR AMBIENCE EXTRACTION FROM TWO-CHANNEL AUDIO SIGNALS 有权用于从两声道音频信号中提取的相关性方法公开(公告)号：US20090092258A1
公开(公告)日：2009-04-09
申请号：US12196239
申请日：2008-08-21
IPC分类号： H04R5/00
CPC分类号： H04S7/30 , G10L19/008 , H04S3/002
摘要： A method of ambience extraction includes analyzing an input signal to determine the time-dependent and frequency-dependent amount of ambience in the input signal, wherein the amount of ambience is determined based on a signal model and correlation quantities computed from the input signals and wherein the ambience is extracted using a multiplicative time-frequency mask. Another method of ambience extraction includes compensating a bias in the estimation of a short-term cross-correlation coefficient. In addition, systems having various modules for implementing the above methods are disclosed.
摘要翻译： 一种环境提取方法包括分析输入信号以确定输入信号中的时间依赖性和与频率相关的环境量，其中基于从输入信号计算的信号模型和相关量来确定环境量，其中 使用乘法时频掩码提取环境。 另一种环境提取方法包括补偿短期互相关系数估计中的偏差。 此外，公开了具有用于实现上述方法的各种模块的系统。
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公开(公告)号：US08345899B2
公开(公告)日：2013-01-01
申请号：US12047285
申请日：2008-03-12
IPC分类号： H04R5/02
CPC分类号： H04S1/002 , G10L19/008 , H04S3/008
摘要： A frequency domain method for phase-amplitude matrixed surround decoding of 2-channel stereo recordings and soundtracks, based on spatial analysis of 2-D or 3-D directional cues in the recording and re-synthesis of these cues for reproduction on any headphone or loudspeaker playback system.
摘要翻译： 一种用于2声道立体声录音和声轨的相位幅度矩阵环绕解码的频域方法，基于在任何耳机上再现的这些线索的记录和重新合成中的2D或3D方向提示的空间分析， 扬声器播放系统。
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6.发明授权Correlation-based method for ambience extraction from two-channel audio signals 有权从双声道音频信号提取气氛的相关方法公开(公告)号：US08107631B2
公开(公告)日：2012-01-31
申请号：US12196239
申请日：2008-08-21
IPC分类号： H04R5/00
CPC分类号： H04S7/30 , G10L19/008 , H04S3/002
摘要： A method of ambience extraction includes analyzing an input signal to determine the time-dependent and frequency-dependent amount of ambience in the input signal, wherein the amount of ambience is determined based on a signal model and correlation quantities computed from the input signals and wherein the ambience is extracted using a multiplicative time-frequency mask. Another method of ambience extraction includes compensating a bias in the estimation of a short-term cross-correlation coefficient. In addition, systems having various modules for implementing the above methods are disclosed.
摘要翻译： 一种环境提取方法包括分析输入信号以确定输入信号中的时间依赖性和与频率相关的环境量，其中基于从输入信号计算的信号模型和相关量来确定环境量，并且其中 使用乘法时频掩码提取环境。 另一种环境提取方法包括补偿短期互相关系数估计中的偏差。 此外，公开了具有用于实现上述方法的各种模块的系统。
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公开(公告)号：US09496850B2
公开(公告)日：2016-11-15
申请号：US11834608
申请日：2007-08-06
申请人： Jean-Marc Jot , Martin Walsh , Jean Laroche , Mark Phillips , Michael Chorn , Michael M. Goodwin
发明人： Jean-Marc Jot , Martin Walsh , Jean Laroche , Mark Phillips , Michael Chorn , Michael M. Goodwin
CPC分类号： G10L19/0204 , G10L19/26 , H03H17/0266 , H04S2420/01
摘要： A digital signal is processed by splitting it into at least two frequency subbands and the two subband signals are downsampled. A filter is applied in at least one of the subband signals. At least one of the phase and magnitude of the subband filtered signals is matched in the transition frequency band between the two subbands.
摘要翻译： 通过将数字信号分成至少两个频率子带并对两个子带信号进行下采样来处理数字信号。 在至少一个子带信号中应用滤波器。 子带滤波信号的相位和幅度中的至少一个在两个子带之间的转换频带中匹配。
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公开(公告)号：US08712061B2
公开(公告)日：2014-04-29
申请号：US12246491
申请日：2008-10-06
IPC分类号： H04R5/00
CPC分类号： H04S3/02 , G10L19/008
摘要： A two-channel phase-amplitude stereo encoding and decoding scheme enabling flexible and spatially accurate interactive 3-D audio reproduction via standard audio-only two-channel transmission. The encoding scheme allows associating a 2-D or 3-D positional localization to each of a plurality of sound sources by use of frequency independent inter-channel phase and amplitude differences. The decoder is based on frequency-domain spatial analysis of 2-D or 3-D directional cues in a two-channel stereo signal and re-synthesis of these cues using any preferred spatialization technique, thereby allowing faithful reproduction of positional audio cues and reverberation or ambient cues over arbitrary multi-channel loudspeaker reproduction formats or over headphones, while preserving source separation despite the intermediate encoding over only two audio channels.
摘要翻译： 双通道相位立体声编码和解码方案，通过标准的仅音频双通道传输实现灵活和空间准确的交互式3-D音频再现。 编码方案允许通过使用频率无关的信道间相位和幅度差来将多维声源中的每一个与二维或三维位置定位相关联。 解码器基于双声道立体声信号中的2-D或3-D方向提示的频域空间分析，并且使用任何优选的空间化技术重新合成这些线索，从而允许忠实地再现位置音频线索和混响 或环境提示超过任意多声道扬声器再现格式或通过耳机，同时保留源分离，尽管中间编码只有两个音频通道。
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公开(公告)号：US20120082319A1
公开(公告)日：2012-04-05
申请号：US13228336
申请日：2011-09-08
CPC分类号： G10K15/08 , G10K15/12 , G10L19/008 , H04S7/30 , H04S2400/15 , H04S2420/03
摘要： A method and apparatus processes multi-channel audio by encoding, transmitting or recording “dry” audio tracks or “stems” in synchronous relationship with time-variable metadata controlled by a content producer and representing a desired degree and quality of diffusion. Audio tracks are compressed and transmitted in connection with synchronized metadata representing diffusion and preferably also mix and delay parameters. The separation of audio stems from diffusion metadata facilitates the customization of playback at the receiver, taking into account the characteristics of local playback environment.
摘要翻译： 一种方法和装置通过编码，发送或记录与内容制作者控制的时变元数据同步关系并表示所需的扩散程度和质量的“干”音轨或“干”来处理多声道音频。 音频轨道被压缩并且与表示扩散的同步元数据一起发送，并且优选地也是混合和延迟参数。 音频分离源于扩散元数据有助于在接收机上定制播放，同时考虑到本地播放环境的特性。
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10.发明授权Ambience extraction and modification for enhancement and upmix of audio signals 有权环境提取和修改用于音频信号的增强和上混合公开(公告)号：US07412380B1
公开(公告)日：2008-08-12
申请号：US10738361
申请日：2003-12-17
CPC分类号： G10L25/48 , G10L19/008 , G10L21/00 , H04S3/008 , H04S5/005
摘要： Modifying an audio signal comprising a plurality of channel signals is disclosed. At least selected ones of the channel signals are transformed into a time-frequency domain. The at least selected ones of the channel signals are compared in the time-frequency domain to identify corresponding portions of the channel signals that are not correlated or are only weakly correlated across channels. The identified corresponding portions of said channel signals are modified.
摘要翻译： 公开了包括多个信道信号的音频信号的修改。 至少选择的一个信道信号被变换成时频域。 在时间 - 频率域中比较所选择的至少一个信道信号，以识别不相关的信道信号的对应部分或者仅在信道之间仅仅是弱相关的。 所述信道信号的识别的相应部分被修改。
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