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1. 发明专利

JPH07239689A NOISE CONTROLLER 失效
公开(公告)号：JPH07239689A
公开(公告)日：1995-09-12
申请号：JP3001494
申请日：1994-02-28
申请人： MATSUSHITA ELECTRIC IND CO LTD , NIPPON STEEL CORP
发明人： TAMURA TADASHI , NAKAMA YASUTOSHI , TERAI KENICHI , HASHIMOTO HIROYUKI , BABA KENICHI , KAWAKAMI HIROAKI
IPC分类号： F01N1/00 , G10K11/16 , G10K11/178 , H04R3/02
摘要： PURPOSE:To provide a noise controller with a large muffler effect and with large versatility and with a simple constitution. CONSTITUTION:This device is provided with a frame 14 attached to a sound- proofing cover 3, a control speaker 8 arranged on the frame 14, a noise detection means 5 detecting noise and an error detection means 7 detecting error between a sound wave radiated from the control speaker 8 and the noise from the noise detection means 5. Then, the control speaker 8 and the error detection means 7 are fixed to the frame 14, and further, a monitoring window 10 provided for monitoring a noise source 1 is interposed between the noise detection means 5 and the error detection means 7. Thus, the device is hardly affected by the sound field of a scene, and adjustment in the scene is eliminated, and the versatility is enlarged. Further, howling is dissolved.

2. 发明专利

DE60113741T2 未知
公开(公告)号：DE60113741T2
公开(公告)日：2006-06-08
申请号：DE60113741
申请日：2001-01-31
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TERAI KENICHI , HASHIMOTO HIROYUKI , KAKUHARI ISAO , HAMANAKA HIROSHI
IPC分类号： H04R5/033 , H04S1/00 , H04S3/00 , H04S3/02 , H04S7/00
摘要： A headphone system includes a headphone (201); and a signal processing circuit (301a) for outputting an acoustic signal to the headphone. The headphone includes a first speaker (1) and a third speaker (3) for a right ear of a listener, a second speaker (2) and a fourth speaker (4) for a left ear of the listener, and a support (8) for supporting the first through fourth speakers so that the first and second speakers are located forward with respect to a vertical plane including a straight line connecting the hole of the right ear and the hole of the left ear of the listener, the second and fourth speakers are located rearward with respect to the vertical plane, and the first through fourth speakers are out of contact with the right ear and the left ear of the listener.

3. 发明公开

EP1037501A4 PUBLIC ADDRESSING SYSTEM 有权
标题翻译： BESCHALLUNGSANLAGE
公开(公告)号：EP1037501A4
公开(公告)日：2005-09-14
申请号：EP98945599
申请日：1998-10-02
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KAKUHARI ISAO , TERAI KENICHI , HASHIMOTO HIROYUKI
IPC分类号： H04R5/02 , H04R27/00
CPC分类号： H04R5/02 , H04R27/00
摘要： A public addressing system comprising a sound signal source for outputting a sound signal, an intensified sound source for receiving a sound signal from the sound signal source and radiating an intensified sound, a controlled sound source installed close to the intensified sound source to radiate a controlled sound, and a signal processing means for controlling at least one of amplitude and phase of the sound signal from the sound signal source to generate a controlled sound signal and then giving the generated controlled sound signal to the controlled sound source so that the interference of the intensified sound and the controlled sound will form an acoustic space that has a desired directivity.
摘要翻译：声音放大装置包括：用于输出声信号的声信号源; 放大声源，用于从声信号源接收声信号并发射放大的声音; 设置在放大声源附近的用于发射控制声音的控制声源; 以及信号处理装置，用于通过控制来自声信号源的声信号的幅度和相位中的至少一个来产生控制声音信号，使得通过放大的声音和控制之间的干扰形成具有期望的方向性的声学空间声音，并将控制声音信号提供给控制声源。

4. 发明专利

DE69939796D1 未知
公开(公告)号：DE69939796D1
公开(公告)日：2008-12-11
申请号：DE69939796
申请日：1999-07-14
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TERAI KENICHI , HASHIMOTO HIROYUKI , KAKUHARI ISAO
IPC分类号： G10K11/178
摘要： A noise control system includes: a control sound generator (1) for generating a control sound; an error detector (2) for detecting an error signal between the control sound and noise; a noise detector (3) for detecting a noise source signal; an adaptive filter (4) for outputting a control signal; and a coefficient updator for updating a coefficient of the adaptive filter (4). The coefficient updator includes at least a first digital filter (5), a first coefficient update calculator (6), a second digital filter (7), a phase inverter (10), a third digital filter (8), and a second coefficient update calculator (9). Alternatively, the coefficient updator includes at least a first digital filter, a second digital filter, a third digital filter, a coefficient update calculator, a phase inverter, a first adder, and a second adder. In either case, the coefficient updator has a function of suppressing an increase in a coefficient gain of the adaptive filter in a predetermined frequency band.

5. 发明专利

DE3782959D1 未知
公开(公告)号：DE3782959D1
公开(公告)日：1993-01-21
申请号：DE3782959
申请日：1987-03-30
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： WATANABE KOJI , HAYASHI KATSUHIKO MINGLE AP AK , MINAKUCHI NOBUAKI , MISAKI MASAYUKI , TERAI KENICHI , NAKAMA YASUTOSHI
IPC分类号： G11B5/035 , H03G5/16 , H04R25/00
摘要： Low-frequency components (S2) are selected from the outputted analog sound signal (S1) so that a low-pitched sound signal is derived from the analog sound signal. A key of the low-pitched sound signal is lowered so that a very-low-pitched sound signal (S3) is derived from the low-pitched sound signal (S2). The analog sound signal (S1) and the very-low-pitched sound signal (S3) may be converted into corresponding sounds respectively (S4).

6. 发明专利

CA2430403C SOUND IMAGE CONTROL SYSTEM 未知
公开(公告)号：CA2430403C
公开(公告)日：2011-06-21
申请号：CA2430403
申请日：2003-05-30
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HASHIMOTO HIROYUKI , TERAI KENICHI , KAKUHARI ISAO , HACHUDA TAKAHISA
IPC分类号： H04R1/32 , H04S1/00 , H04S7/00
摘要： To provide a sound image control system able to concurrently perform sound image localization control for two persons . The present invention is directed to a sound image control system controlling a sound image localization position by reproducing an audio signal from a plurality of loudspeakers . The sound image control system includes at least four loudspeakers for reproducing the audio signal and a signal processing section. The signal processing section sets four points corresponding to both ears of two listeners as control points , and performs signal processing for the audio signal input into the plurality of loudspeakers so that two target sound source positions indicating sound image localization positions of the respective two listeners are set in the same direction with respect to the two listeners . Here, the two target sound source positions are set so as to satisfy a following condition, T1

7. 发明专利

DE69637379D1 未知
公开(公告)号：DE69637379D1
公开(公告)日：2008-02-07
申请号：DE69637379
申请日：1996-07-23
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TERAI KENICHI , HASHIMOTO HIROYUKI
IPC分类号： H04M1/19 , H04R3/04 , G10K11/178 , H03H21/00 , H04B3/20 , H04M1/03 , H04R3/00
摘要： A noise controlled type handset processes the output of non-directional noise detector installed outside of the handset by a first adaptive filter, delivers a control sound from a control speaker, controls the first adaptive filter so that the output of an error detector near the ear may be small, simultaneously processes the noise detection signal in a second adaptive filter, subtracts from the noise signal mixing into a bi-directional talking microphone, and controls the second adaptive filter so that the subtraction signal may be small, thereby talking back the signal of voice only by reducing noise by delivering through the speaker, and sending a transmission output at the same time.

8. 发明专利

DE60113741D1 未知
公开(公告)号：DE60113741D1
公开(公告)日：2006-02-16
申请号：DE60113741
申请日：2001-01-31
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TERAI KENICHI , HASHIMOTO HIROYUKI , KAKUHARI ISAO , HAMANAKA HIROSHI
IPC分类号： H04R5/033 , H04S1/00 , H04S3/00 , H04S3/02 , H04S7/00
摘要： A headphone system includes a headphone (201); and a signal processing circuit (301a) for outputting an acoustic signal to the headphone. The headphone includes a first speaker (1) and a third speaker (3) for a right ear of a listener, a second speaker (2) and a fourth speaker (4) for a left ear of the listener, and a support (8) for supporting the first through fourth speakers so that the first and second speakers are located forward with respect to a vertical plane including a straight line connecting the hole of the right ear and the hole of the left ear of the listener, the second and fourth speakers are located rearward with respect to the vertical plane, and the first through fourth speakers are out of contact with the right ear and the left ear of the listener.

9. 发明专利

CA2348276A1 ACTIVE NOISE CONTROL SYSTEM 未知
公开(公告)号：CA2348276A1
公开(公告)日：2001-11-24
申请号：CA2348276
申请日：2001-05-23
申请人： MATSUSHITA ELECTRIC IND CO LTD , HONDA MOTOR CO LTD
发明人： HASHIMOTO HIROYUKI , NAKAMURA YOSHIO , TAKAHASHI AKIRA , OHASHI TOSHIHIKO , INOUE TOSHIO , SANO HISASHI , KAKUHARI ISAO , YAMASHITA TSUYOSHI , TERAI KENICHI
IPC分类号： F01N1/00 , G10K11/178 , H04R3/00 , H04R3/02 , B60R13/08 , F02B77/11
摘要： An active noise control system for reducing road noise of low frequency generated inside the cabin of a vehicle is provided. The active noise control system includes a noise detector, a signal generator for processing the input noise signal to generate a signal for producing noise canceling waves, a limiting amplifier having a specified threshold value for variably amplifying the processed signal so that the amplitude of output signal will not exceed the threshold value, and an electrical acoustic converter for producing noise canceling acoustic waves in accordance with the output signal.

10. 发明专利

ID29556A 未知
公开(公告)号：ID29556A
公开(公告)日：2001-09-06
申请号：ID20010109
申请日：2001-02-02
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TERAI KENICHI , HASHIMOTO HIROYUKI , KAKUHARI ISAO , HAMANAKA HIROSHI
IPC分类号： H04R5/033 , H04S1/00 , H04S3/00 , H04S7/00
摘要： A headphone system includes a headphone (201); and a signal processing circuit (301a) for outputting an acoustic signal to the headphone. The headphone includes a first speaker (1) and a third speaker (3) for a right ear of a listener, a second speaker (2) and a fourth speaker (4) for a left ear of the listener, and a support (8) for supporting the first through fourth speakers so that the first and second speakers are located forward with respect to a vertical plane including a straight line connecting the hole of the right ear and the hole of the left ear of the listener, the second and fourth speakers are located rearward with respect to the vertical plane, and the first through fourth speakers are out of contact with the right ear and the left ear of the listener.

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