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    • 82. 发明申请
    • Audio Spatial Environment Engine
    • 音频空间环境引擎
    • US20070297519A1
    • 2007-12-27
    • US11666512
    • 2005-10-28
    • Jeffrey ThompsonRobert ReamsAaron Warner
    • Jeffrey ThompsonRobert ReamsAaron Warner
    • G10L19/02
    • G10L19/008
    • 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.
    • 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。
    • 84. 发明授权
    • Single channel sound separation
    • 单通道声音分离
    • US07243060B2
    • 2007-07-10
    • US10406802
    • 2003-04-02
    • Les AtlasJeffrey Thompson
    • Les AtlasJeffrey Thompson
    • G10L11/00G10L21/00G10L15/20
    • G10L21/028G10L21/0208
    • The speech of two or more simultaneous speakers (or other simultaneous sounds) conveyed in a single channel are distinguished. Joint acoustic/modulation frequency analysis and display tools are used to localize and separate sonorant portions of multiple-speakers' speech into distinct regions using invertible transform functions. For example, the regions representing one of the speakers are set to zero, and the inverted modified display maintains only the speech of the other speaker. A combined audio signal is manipulated using a base acoustic transform, followed by a second modulation transform, which separates the combined signals into distinguishable components. The components corresponding to the undesired speaker are masked, leaving only the second modulation transform of the desired speaker's audio signal. An inverse second modulation transform of the desired signal is performed, followed by an inverse base acoustic transform of the desired signal, providing an audio signal for only the desired speaker.
    • 区分在单个通道中传送的两个或多个同时发言者(或其他同时发声)的语音。 联合声/调频分析和显示工具用于使用可逆变换函数将多扬声器语音的声部部分定位和分离为不同的区域。 例如,表示其中一个扬声器的区域被设置为零,并且反向修改的显示仅保持另一扬声器的语音。 使用基础声学变换来操纵组合的音频信号,随后进行第二调制变换,其将组合的信号分离成可区分的分量。 对应于不需要的扬声器的组件被屏蔽,仅留下所需扬声器的音频信号的第二调制变换。 执行期望信号的逆二次调制变换,随后是期望信号的反基底声波变换,仅为期望的扬声器提供音频信号。
    • 89. 发明申请
    • Audio spatial environment engine
    • 音频空间环境引擎
    • US20060093164A1
    • 2006-05-04
    • US11262190
    • 2005-10-28
    • Robert ReamsJeffrey ThompsonAaron Warner
    • Robert ReamsJeffrey ThompsonAaron Warner
    • H04B1/00H04R5/00
    • H04S3/02H04S2400/01H04S2420/07
    • 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.
    • 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。
    • 90. 发明申请
    • Audio spatial environment up-mixer
    • 音频空间环境上调
    • US20060093152A1
    • 2006-05-04
    • US11262029
    • 2005-10-28
    • Jeffrey ThompsonRobert ReamsAaron Warner
    • Jeffrey ThompsonRobert ReamsAaron Warner
    • H04R5/00
    • H04S3/006
    • 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.
    • 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。