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1. 发明授权

US07929708B2 Audio spatial environment engine 有权
标题翻译：音频空间环境引擎
公开(公告)号：US07929708B2
公开(公告)日：2011-04-19
申请号：US10975841
申请日：2004-10-28
申请人： Robert Reams , Jeffrey K. Thompson , Aaron Warner
发明人： Robert Reams , Jeffrey K. Thompson , Aaron Warner
IPC分类号： H04R5/00 , H04R5/02
CPC分类号： H04S3/00 , H04S2400/01
摘要： An audio spatial environment engine for converting from an N channel audio system to an M channel audio system, where N is an integer greater than M, is provided. The audio spatial environment engine includes one or more correlators receiving two of the N channels of audio data and eliminating delays between the channels that are irrelevant to an average human listener. One or more Hilbert transform systems each perform a Hilbert transform on one or more of the correlated channels of audio data. One or more summers receive at least one of the correlated channels of audio data and at least one of the Hilbert transformed correlated channels of audio data and generate one of the M channels of audio data.
摘要翻译：提供了一种用于从N声道音频系统转换成M通道音频系统的音频空间环境引擎，其中N是大于M的整数。音频空间环境引擎包括一个或多个相关器，其接收N个音频数据中的两个，并消除与平均人类听者无关的频道之间的延迟。一个或多个希尔伯特变换系统在音频数据的一个或多个相关通道上执行希尔伯特变换。一个或多个夏季接收音频数据的相关信道和至少一个音频数据的希尔伯特变换的相关信道中的至少一个，并生成M个音频数据之一。

2. 发明申请

US20090060204A1 Audio Spatial Environment Engine 审中-公开
标题翻译：音频空间环境引擎
公开(公告)号：US20090060204A1
公开(公告)日：2009-03-05
申请号：US12245398
申请日：2008-10-03
申请人： Robert Reams , Jeffrey K. Thompson , Aaron Warner
发明人： Robert Reams , Jeffrey K. Thompson , Aaron Warner
IPC分类号： H04R5/00 , H04B1/00
CPC分类号： H04S3/00 , H04S2400/01
摘要： An audio spatial environment engine for converting from an N channel audio system to an M channel audio system, where N is an integer greater than M, is provided. The audio spatial environment engine includes one or more correlators receiving two or more of the N channels of audio data and eliminating delays between the channels that are irrelevant to an average human listener. One or more Hilbert transform systems each perform a Hilbert transform on one or more of the correlated channels of audio data. One or more summers receive at least one of the correlated channels of audio data and at least one of the Hilbert transformed correlated channels of audio data and generate one of the M channels of audio data.
摘要翻译：提供了一种用于从N声道音频系统转换成M通道音频系统的音频空间环境引擎，其中N是大于M的整数。音频空间环境引擎包括一个或多个相关器，其接收N个音频数据中的两个或更多个信道，并消除与平均人类听者无关的频道之间的延迟。一个或多个希尔伯特变换系统在音频数据的一个或多个相关通道上执行希尔伯特变换。一个或多个夏季接收音频数据的相关信道和至少一个音频数据的希尔伯特变换的相关信道中的至少一个，并生成M个音频数据之一。

3. 发明授权

US07853022B2 Audio spatial environment engine 有权
标题翻译：音频空间环境引擎
公开(公告)号：US07853022B2
公开(公告)日：2010-12-14
申请号：US11262029
申请日：2005-10-28
申请人： Jeffrey K. Thompson , Robert W. Reams , Aaron Warner
发明人： Jeffrey K. Thompson , Robert W. Reams , Aaron Warner
IPC分类号： H04R5/00 , H04B1/00
CPC分类号： H04S3/006
摘要： An audio spatial environment engine for flexible and scalable up-mixing from an M channel audio system to an N channel audio system, where M and N are integers and N is greater than M, is provided. The input M channel audio is provided to an analysis filter bank which converts the time domain signals into frequency domain signals. Relevant inter-channel spatial cues are extracted from the frequency domain signals on a sub-band basis and are used as parameters to generate adaptive N channel filters which control the spatial placement of a frequency band element in the up-mixed sound field. The N channel filters are smoothed across both time and frequency to limit filter variability which could cause annoying fluctuation effects. The smoothed N channel filters are then applied to adaptive combinations of the frequency domain input signals and are provided to a synthesis filter bank which generates the N channel time domain output signals.
摘要翻译：提供了一种音频空间环境引擎，用于从M通道音频系统到N通道音频系统的灵活和可扩展的上混合，其中M和N是整数，N大于M。输入M声道音频被提供给分析滤波器组，其将时域信号转换成频域信号。相关的信道间空间提示是以子带为基础从频域信号中提取的，并被用作生成自适应N信道滤波器的参数，该自适应N信道滤波器控制上混频声场中的频带元素的空间位置。 N通道滤波器在时间和频率上均匀平滑，以限制滤波器变化，这可能导致烦人的波动效应。然后将经平滑的N沟道滤波器应用于频域输入信号的自适应组合，并被提供给产生N个信道时域输出信号的合成滤波器组。

4. 发明申请

US20090157204A1 Temporally accurate watermarking system and method of operation 有权
标题翻译：时间准确的水印系统和操作方法
公开(公告)号：US20090157204A1
公开(公告)日：2009-06-18
申请号：US12001851
申请日：2007-12-13
申请人： Brandon Smith , Jeffrey K. Thompson , Aaron Warner
发明人： Brandon Smith , Jeffrey K. Thompson , Aaron Warner
IPC分类号： G06F17/00
CPC分类号： G11B20/00086 , G10L19/018 , G11B20/00181 , G11B20/00891 , G11B2020/00028 , G11B2020/00057
摘要： A system for identifying audio data is provided. The system includes a transform system receiving left channel audio data and right channel audio data and generating a plurality of frequency bins of left channel magnitude data, left channel phase data, right channel magnitude data and right channel phase data. A watermarking system receives watermarking data and modifies predetermined frequency bins of the left channel phase data and the right channel phase data to encode the watermarking data. A magnitude system receives the left channel magnitude data and the right channel magnitude data and increases the left channel magnitude data and the right channel magnitude data for one or more of the predetermined frequency bins to a threshold level if the left channel magnitude data and the right channel magnitude data for the corresponding frequency bin is less than the threshold level.
摘要翻译：提供用于识别音频数据的系统。该系统包括接收左声道音频数据和右声道音频数据并产生左声道幅度数据，左声道相位数据，右声道幅度数据和右声道相位数据的多个频率仓的变换系统。水印系统接收水印数据并修改左声道相位数据和右声道相位数据的预定频率仓以对水印数据进行编码。幅度系统接收左声道幅度数据和右声道幅度数据，并将左声道幅度数据和左声道幅度数据和右声道幅度数据和右声道幅度数据和右声道幅度数据和右声道幅度数据以及用于一个或多个预定频率仓的右声道幅度数据增加到阈值电平相应频率仓的通道幅度数据小于阈值电平。

5. 发明申请

US20070239295A1 Codec conditioning system and method 审中-公开
标题翻译：编解码器调理系统及方法
公开(公告)号：US20070239295A1
公开(公告)日：2007-10-11
申请号：US11710070
申请日：2007-02-23
申请人： Jeffrey Thompson , Robert Reams , Aaron Warner
发明人： Jeffrey Thompson , Robert Reams , Aaron Warner
IPC分类号： G06F17/00
CPC分类号： G10L19/265 , G10L19/008 , G10L19/02 , G10L19/032
摘要： An audio processing application is provided which utilizes an audio codec encode/decode simulation system and a psychoacoustic model to estimate audible quantization noise that may occur during lossy audio compression. Mask-to-noise ratio values are computed for a plurality of frequency bands and are used to intelligently process an audio signal specifically for a given audio codec. In one exemplary embodiment, the mask-to-noise ratio values are used to reduce the extent of perceived artifacts for lossy compression, such as by modifying the energy and/or coherence of frequency bands in which quantization noise is estimated to exceed the masking threshold.
摘要翻译：提供了一种音频处理应用，其利用音频编解码器/解码模拟系统和心理声学模型来估计在有损音频压缩期间可能发生的可听量化噪声。针对多个频带计算面对噪声比值，并且用于智能处理特定于给定音频编解码器的音频信号。在一个示例性实施例中，掩模 - 噪声比值被用于减少用于有损压缩的感知伪像的程度，例如通过修改估计量化噪声超过掩蔽阈值的频带的能量和/或相干性。

6. 发明申请

US20060106620A1 Audio spatial environment down-mixer 审中-公开
标题翻译：音频空间环境下混频器
公开(公告)号：US20060106620A1
公开(公告)日：2006-05-18
申请号：US11261100
申请日：2005-10-28
申请人： Jeffrey Thompson , Robert Reams , Aaron Warner
发明人： Jeffrey Thompson , Robert Reams , Aaron Warner
IPC分类号： G10L21/00
CPC分类号： G10L19/008
摘要： An audio spatial environment engine is provided for converting from an N channel audio system to an M channel audio system, such as in a dynamic down-mixer where N and M are integers and N is greater than M. The dynamic down-mix methodology consists of a static down-mix system utilizing an intelligent analysis and correction loop. The original N-channel audio signals are provided to a static down-mix process which produces a down-mixed M-channel audio signal. That M-channel audio signal is provided to an up-mix process which generates a subsequent N-channel audio signal. Any spectral, temporal, or spatial inaccuracies between the original N-channel audio and the subsequent up-mixed N-channel audio are then identified and corrected in the down-mixed M-channel audio signal over a plurality of frequency bands generating the final down-mixed M-channel audio signal. The corrections performed on the down-mixed M-channel audio signal consist of modifications to the relevant inter-channel spatial cues such as inter-channel level difference (ICLD) and inter-channel coherence (ICC) per frequency band.
摘要翻译：提供了一种音频空间环境引擎，用于从N通道音频系统转换为M通道音频系统，例如在N和M为整数且N大于M的动态下混频器中。动态缩混方法包括使用智能分析和校正循环的静态下混系统。原始N声道音频信号被提供给产生下混合M声道音频信号的静态缩混处理。该M声道音频信号被提供给产生后续N声道音频信号的上混合处理。然后，在原始N声道音频和后续上混合N声道音频之间的任何频谱，时间或空间不准确性在多个频带上产生最终下降的下混合M声道音频信号中被识别和校正混合M声道音频信号。对下混合的M声道音频信号进行的校正包括对频道间空白线索的修改，例如每个频带的信道间电平差（ICLD）和信道间相干性（ICC）。

7. 发明申请

US20070297519A1 Audio Spatial Environment Engine 审中-公开
标题翻译：音频空间环境引擎
公开(公告)号：US20070297519A1
公开(公告)日：2007-12-27
申请号：US11666512
申请日：2005-10-28
申请人： Jeffrey Thompson , Robert Reams , Aaron Warner
发明人： Jeffrey Thompson , Robert Reams , Aaron Warner
IPC分类号： G10L19/02
CPC分类号： G10L19/008
摘要： An audio spatial environment engine is provided for converting between different formats of audio data. The audio spatial environment engine (100) allows for flexible conversion between N-channel data and M-channel data and conversion from M-channel data back to N′-channel data, where N, M, and N′ are integers and where N is not necessarily equal to N′. For example, such systems could be used for the transmission or storage of surround sound data across a network or infrastructure designed for stereo sound data. The audio spatial environment engine provides improved and flexible conversions between different spatial environments due to an advanced dynamic down-mixing unit (102) and a high-resolution frequency band up-mixing unit (104). The dynamic down-mixing unit includes an intelligent: analysis and correction loop (108, 110) capable of correcting for spectral, temporal, and spatial inaccuracies common to many down-mixing methods. The up-mixing unit utilizes the extraction and analysis of important inter-channel spatial cues across high-resolution frequency bands to derive the spatial placement of different frequency elements. The down-mixing and up-mixing units, when used individually or as a system, provide improved sound quality and spatial distinction.
摘要翻译：提供音频空间环境引擎，用于在不同格式的音频数据之间进行转换。音频空间环境引擎（100）允许在N信道数据和M信道数据之间进行灵活转换，并且从M信道数据转换回N信道数据，其中N，M和N'是整数，并且其中N 不一定等于N'。例如，这样的系统可以用于通过设计用于立体声声音数据的网络或基础设施的环绕声数据的传输或存储。音频空间环境引擎由于先进的动态下混单元（102）和高分辨率频带向上混合单元（104）而在不同的空间环境之间提供改进和灵活的转换。动态下混单元包括智能的分析和校正回路（108,110），其能够校正许多下混方法共同的频谱，时间和空间不准确。上混单元利用跨高分辨率频带的重要信道间空间提示的提取和分析，得出不同频率元素的空间位置。下混和上混单元当单独使用或作为系统使用时，可提供改善的声音质量和空间差异。

8. 发明申请

US20060093164A1 Audio spatial environment engine 审中-公开
标题翻译：音频空间环境引擎
公开(公告)号：US20060093164A1
公开(公告)日：2006-05-04
申请号：US11262190
申请日：2005-10-28
申请人： Robert Reams , Jeffrey Thompson , Aaron Warner
发明人： Robert Reams , Jeffrey Thompson , Aaron Warner
IPC分类号： H04B1/00 , H04R5/00
CPC分类号： H04S3/02 , H04S2400/01 , H04S2420/07
摘要： An audio spatial environment engine is provided for converting between different formats of audio data. The audio spatial environment engine allows for flexible conversion between N-channel data and M-channel data and conversion from M-channel data back to N′-channel data, where N, M, and N′ are integers and where N is not necessarily equal to N′. For example, such systems could be used for the transmission or storage of surround sound data across a network or infrastructure designed for stereo sound data. The audio spatial environment engine provides improved and flexible conversions between different spatial environments due to an advanced dynamic down-mixing unit and a high-resolution frequency band up-mixing unit. The dynamic down-mixing unit includes an intelligent analysis and correction loop capable of correcting for spectral, temporal, and spatial inaccuracies common to many down-mixing methods. The up-mixing unit utilizes the extraction and analysis of important inter-channel spatial cues across high-resolution frequency bands to derive the spatial placement of different frequency elements. The down-mixing and up-mixing units, when used individually or as a system, provide improved sound quality and spatial distinction.
摘要翻译：提供音频空间环境引擎，用于在不同格式的音频数据之间进行转换。音频空间环境引擎允许在N信道数据和M信道数据之间进行灵活转换，并且从M信道数据转换回N信道数据，其中N，M和N'是整数，并且其中N不一定等于N'。例如，这样的系统可以用于通过设计用于立体声声音数据的网络或基础设施的环绕声数据的传输或存储。音频空间环境引擎由于采用先进的动态下混单元和高分辨率频段向上混合单元，在不同的空间环境之间提供了改进和灵活的转换。动态下混单元包括智能分析和校正回路，能够校正许多下混方法所共有的光谱，时间和空间不准确。上混单元利用跨高分辨率频带的重要信道间空间提示的提取和分析，得出不同频率元素的空间位置。下混和上混单元当单独使用或作为系统使用时，可提供改善的声音质量和空间差异。

9. 发明申请

US20060093152A1 Audio spatial environment up-mixer 有权
标题翻译：音频空间环境上调
公开(公告)号：US20060093152A1
公开(公告)日：2006-05-04
申请号：US11262029
申请日：2005-10-28
申请人： Jeffrey Thompson , Robert Reams , Aaron Warner
发明人： Jeffrey Thompson , Robert Reams , Aaron Warner
IPC分类号： H04R5/00
CPC分类号： H04S3/006
摘要： An audio spatial environment engine for flexible and scalable up-mixing from an M channel audio system to an N channel audio system, where M and N are integers and N is greater than M, is provided. The input M channel audio is provided to an analysis filter bank which converts the time domain signals into frequency domain signals. Relevant inter-channel spatial cues are extracted from the frequency domain signals on a sub-band basis and are used as parameters to generate adaptive N channel filters which control the spatial placement of a frequency band element in the up-mixed sound field. The N channel filters are smoothed across both time and frequency to limit filter variability which could cause annoying fluctuation effects. The smoothed N channel filters are then applied to adaptive combinations of the frequency domain input signals and are provided to a synthesis filter bank which generates the N channel time domain output signals.
摘要翻译：提供了一种音频空间环境引擎，用于从M通道音频系统到N通道音频系统的灵活和可扩展的上混合，其中M和N是整数，N大于M。输入M声道音频被提供给分析滤波器组，其将时域信号转换成频域信号。相关的信道间空间提示是以子带为基础从频域信号中提取的，并被用作生成自适应N信道滤波器的参数，该自适应N信道滤波器控制上混频声场中的频带元素的空间位置。 N通道滤波器在时间和频率上均匀平滑，以限制滤波器变化，这可能导致烦人的波动效应。然后将经平滑的N沟道滤波器应用于频域输入信号的自适应组合，并被提供给产生N个信道时域输出信号的合成滤波器组。

10. 发明授权

US08385556B1 Parametric stereo conversion system and method 有权
标题翻译：参数立体声转换系统及方法
公开(公告)号：US08385556B1
公开(公告)日：2013-02-26
申请号：US12192404
申请日：2008-08-15
申请人： Aaron Warner , Jeffrey Thompson , Robert Reams
发明人： Aaron Warner , Jeffrey Thompson , Robert Reams
IPC分类号： H04R5/00 , H04R1/40
CPC分类号： G10L19/008 , G10L19/173
摘要： A system for generating parametric stereo data from phase modulated stereo data is provided. A phase difference system receives left channel data and right channel data and determines a phase difference between the left channel data and the right channel data. A phase difference weighting system receives the phase difference data and generates weighting data to adjust left channel amplitude data and right channel amplitude data based on the phase difference data. A magnitude modification system adjusts the left channel amplitude data and the right channel amplitude data using the weighting data to eliminate phase data in the left channel data and the right channel data.
摘要翻译：提供了一种从相位调制立体数据产生参数立体声数据的系统。相位差系统接收左声道数据和右声道数据，并确定左声道数据和右声道数据之间的相位差。相位差加权系统接收相位差数据，并产生加权数据，以根据相位差数据调整左声道幅度数据和右声道幅度数据。幅度修正系统使用加权数据来调整左声道幅度数据和右声道幅度数据，以消除左声道数据和右声道数据中的相位数据。

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