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11.发明授权公开(公告)号：US06795556B1
公开(公告)日：2004-09-21
申请号：US09579122
申请日：2000-05-25
IPC分类号： H04R500
CPC分类号： H04S1/002 , B33Y80/00 , H04S1/005 , H04S2420/01
摘要： Original head-related transfer functions (HRTFs) are modified for a non-standard dimensioned head. The HRTF includes a near-ear response function, a far-ear response function, and an inter-aural time delay (ITD). The modified HRTF resembles an HRTF approximating that derived for a listener having different head and/or ear dimensions to the standard dimensions. The ITD value of the HRTF is multiplied by a given scaling factor independent of frequency. The near ear and/or far ear response function of the HRTF is multiplied by a constant scaling factor in the frequency domain independent of time delay, to expand or compress the functions in the frequency domain. The near ear and/or far ear response function of the HRTF are provided with a positive or negative offset value in the frequency domain. The amplitude of the near ear and/or far ear response function of the original HRTF(s) is (are) multiplied by a given gain factor.
摘要翻译： 原始头部相关传输功能（HRTF）针对非标准尺寸头进行了修改。 HRTF包括近耳响应功能，远耳响应功能和听觉间延迟（ITD）。 修改的HRTF类似于对于具有与标准尺寸不同的头部和/或耳朵尺寸的收听者导出的HRTF近似。 HRTF的ITD值乘以与频率无关的给定比例因子。 HRTF的近耳和/或远耳响应功能与时间延迟无关地在频域中乘以恒定缩放因子，以扩展或压缩频域中的功能。 HRTF的近耳和/或远耳响应功能在频域中具有正或负偏移值。 原始HRTF的近耳和/或远耳响应函数的幅度乘以给定的增益因子。
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公开(公告)号：US5917916A
公开(公告)日：1999-06-29
申请号：US851721
申请日：1997-05-05
CPC分类号： H04S1/002 , H04R2420/05 , H04S1/005 , H04S2420/01
摘要： Stereophonic sound reproduction apparatus comprising an input means (2) for producing binaural signals, cross-talk cancellation means, (10) loudspeaker means, (20, 22) headphone means, (26) and a switch means (12, 18, 24, 30, 32) which in a first position (plug 24 not inserted in socket 18) couples the binaural signals from the input means (2) to the loudspeaker means (20, 22) through the cross-talk cancellation means (10) and in a second position (plug 24 inserted in socket 18) renders the cross-talk cancellation means (10) inoperable and couples the binaural signals from the input means (2) to the headphones (26).
摘要翻译： 立体声再现装置，包括用于产生双耳信号的输入装置（2），串扰消除装置，（10）扬声器装置，（20,22）耳机装置，（26）和开关装置（12,18,24， 在第一位置（未插入插座18中的插头24）通过串扰消除装置（10）将来自输入装置（2）的双耳信号耦合到扬声器装置（20,22），并且 第二位置（插入插座18中的插头24）使得串扰消除装置（10）不可操作，并将来自输入装置（2）的双耳信号耦合到耳机（26）。
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公开(公告)号：US5666425A
公开(公告)日：1997-09-09
申请号：US507437
申请日：1996-03-20
CPC分类号： H04S3/002 , H04S2400/01 , H04S2400/15
摘要： An artificial head (2) and a plurality of discrete monophonic microphones (8, 10, 12) are used to record one or more sound sources. The signals (14, 16, 18) from each of the microphones (8, 10, 12) then undergo binaural synthesis based upon acoustical properties of a real human head or the artificial head (2), and the signals (4, 6) from the head are equalised using air-to-ear transfer functions of the artificial head (2) or a real head. The resultant signals are combined by summing the individual left (48) and right (50) channels together and then these summed signals (52, 54) are transaural crosstalk compensated (56) to provide final left and right channel signals (58, 60) suitable for recording or playback which provide a three-dimensional sound effect to a listener both via headphones and loudspeakers.
摘要翻译： PCT No.PCT / GB94 / 00350 Sec。 371日期：1996年3月20日 102（e）1996年3月20日PCT PCT 1994年2月23日PCT公布。 出版物WO94 / 22278 日期1994年9月29日人造头（2）和多个离散单声道麦克风（8,10,12）用于记录一个或多个声源。 来自每个麦克风（8,10,12）的信号（14,16,18）然后基于真实人头或人造头（2）的声学特性进行双耳合成，并且信号（4,6） 使用人造头（2）的空气 - 耳朵传递功能或真正的头部从头部均衡。 所得到的信号通过将各个左（48）和右（50）通道相加在一起而组合，然后这些相加信号（52,54）经过经弦波串扰补偿（56）以提供最终的左和右声道信号（58,60） 适合于通过耳机和扬声器向收听者提供三维声音效果的记录或回放。
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