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1.发明授权Method and apparatus for efficient presentation of high-quality three-dimensional audio 失效用于高效呈现高质量三维音频的方法和装置
公开(公告)号：US5596644A
公开(公告)日：1997-01-21
申请号：US330240
申请日：1994-10-27
申请人： Jonathan S. Abel , Scott H. Foster
发明人： Jonathan S. Abel , Scott H. Foster
CPC分类号： H04S5/00 , H04S3/002 , H04S2400/01 , H04S2420/01 , H04S7/303
摘要： Spatialization of soundfields is accomplished by filtering audio signals using filters having unvarying frequency response characteristics and amplifying signals using amplifier gains adapted in response to signals representing sound source location and/or listener position. The filters are derived using a singular value decomposition process which finds the best set of component impulse responses to approximate a given set of head related transfer functions. Efficient implementations for rendering reflection effects, and for spatializing multiple sound sources and/or generating multiple output signals are disclosed.
摘要翻译： 声场的空间化是通过使用具有不变频率响应特性的滤波器对音频信号进行滤波来实现的，并且使用响应于表示声源位置和/或收听者位置的信号的放大器增益来放大信号。 使用奇异值分解处理导出滤波器，该处理找到最佳的分量脉冲响应集合来近似给定的一组头相关传递函数。 公开了用于渲染反射效果以及用于空间化多个声源和/或产生多个输出信号的高效实现。
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2.发明授权Adaptive selection of OTDR test parameters and the fusion of data taken from successively shrinking measurement spans 失效OTDR测试参数的自适应选择和从连续收缩的测量跨度获取的数据的融合
公开(公告)号：US4812038A
公开(公告)日：1989-03-14
申请号：US5993
申请日：1987-01-21
CPC分类号： G01M11/3118
摘要： A method of dynamically changing the measurement window and operating parameters of the instrument, based on intermediate results, in order to minimize the total time required to make a complete measurement. Also, a method of combining partial results from subwindows into a final result to be displayed that has not been corrupted by variation in system response due to time-varying operating parameters.
摘要翻译： 基于中间结果动态地改变仪器的测量窗口和操作参数的方法，以便最小化完成测量所需的总时间。 而且，一种将子窗口的部分结果组合到待显示的最终结果的方法，该最终结果由于随时间变化的操作参数而不被系统响应的变化所破坏。
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公开(公告)号：US5000568A
公开(公告)日：1991-03-19
申请号：US415438
申请日：1989-09-28
IPC分类号： G01M11/00
CPC分类号： G01M11/3118
摘要： An optical time domain reflectometer that injects at least two complementary code sequences into an optical fiber and detects the return signal produced by each of these code sequences. These return signals are processed to extract the function h.sub.k that is equal to the response function for the fiber when a single pulse is injected into the fiber. This processing utilizes a correlation scheme that has no sidelobe distortion. Various combinations of Golay codes are suitable for use as the complementary codes.
摘要翻译： 光时域反射计，其将至少两个互补码序列注入到光纤中，并检测由这些码序列中的每一个产生的返回信号。 处理这些返回信号以提取当将单个脉冲注入光纤时等于光纤的响应函数的函数hk。 该处理利用没有旁瓣失真的相关方案。 Golay码的各种组合适合用作互补码。
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公开(公告)号：US5815578A
公开(公告)日：1998-09-29
申请号：US785200
申请日：1997-01-17
申请人： Scott H. Foster , Martin J. Walsh
发明人： Scott H. Foster , Martin J. Walsh
CPC分类号： H04R3/00
摘要： A system and method are disclosed for canceling the leakage from a speaker.
摘要翻译： 公开了一种用于消除扬声器泄漏的系统和方法。
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