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1. 发明专利

JP2009217092A Sound field space control system 有权
标题翻译：声场空间控制系统
公开(公告)号：JP2009217092A
公开(公告)日：2009-09-24
申请号：JP2008062152
申请日：2008-03-12
申请人： Dai-Dan Co Ltd , ダイダン株式会社
发明人： TANAKA YASUNOBU , OMOTO AKIRA , FUJIWARA KYOJI
IPC分类号： G10K15/00 , H04R3/12 , H04S7/00
摘要： PROBLEM TO BE SOLVED: To provide a sound field space control system that can reproduce a quality of sound realized in a predetermined space of good acoustic effects in other spaces. SOLUTION: In the sound field space control system 10A, differential signal output devices 26, 27, 31 and 32 generate differential signals including frequency characteristic modification components and reverberation characteristic modification components for approximating music to target sound waves, and interference signal generation devices 25 and 30 generate interference signals as second sound waves by using a first signal received from a reference microphone 13 and the differential signals received from the differential signal output devices 26, 27, 31 and 32. The system 10A causes the second sound waves to interfere with the music to amplify, attenuate and eliminate predetermined frequency bands of the music and control reverberation characteristics of the music. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种声场空间控制系统，其可以再现在其他空间中具有良好声音效果的预定空间中实现的声音的质量。解决方案：在声场空间控制系统10A中，差分信号输出装置26,27,31和32产生包括频率特性修改分量和用于近似音乐到目标声波的混响特性修改分量的差分信号，以及干扰信号产生设备25和30通过使用从参考麦克风13接收的第一信号和从差分信号输出设备26,27,31和32接收的差分信号，产生作为第二声波的干扰信号。系统10A使第二声波干扰音乐放大，衰减和消除音乐的预定频带并控制音乐的混响特性。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2544900B2 失效
公开(公告)号：JP2544900B2
公开(公告)日：1996-10-16
申请号：JP12546594
申请日：1994-06-07
申请人： DAI DAN CO LTD
发明人： YAMASHITA REIJI , ITO SHUICHI , TANAKA YASUNOBU , ASAYAMA HIROSHI
IPC分类号： F01N1/06 , F24F13/02 , G10K11/16 , G10K11/178 , H04R1/28

3. 发明专利

JP2544899B2 失效
公开(公告)号：JP2544899B2
公开(公告)日：1996-10-16
申请号：JP12504994
申请日：1994-06-07
申请人： DAI DAN CO LTD
发明人： YAMASHITA REIJI , ITO SHUICHI , TANAKA YASUNOBU , ASAYAMA HIROSHI
IPC分类号： F17D1/20 , G10K11/178

4. 发明专利

JPH07334174A SPEAKER INSTALLING DEVICE OF ACTIVE NOISE CONTROL SYSTEM. 失效
公开(公告)号：JPH07334174A
公开(公告)日：1995-12-22
申请号：JP12546694
申请日：1994-06-07
申请人： DAI DAN CO LTD
发明人： YAMASHITA REIJI , ITO SHUICHI , TANAKA YASUNOBU , ASAYAMA HIROSHI
IPC分类号： F01N1/00 , F24F13/02 , G10K11/16 , G10K11/178
摘要： PURPOSE:To improve a silencing effect by installing a speaker for silencing at a bent part of a duct, thereby making it possible to bring the noises in the duct and sound waves for silencing into collision against each other without having an angle. CONSTITUTION:The wall surface in the bent part of the duct 1 having the bent part is provided with the speaker 3 for silencing toward a noise source direction. The sound waves for silencing radiated into the duct 1 from the speaker 3 for silencing are radiated in a direction opposite to the progressing direction of the noise sound waves. The wall surface of the duct 1 nearer the noise source side than the speaker 3 for silencing is provided with a first microphone and is mounted with a second microphone on the opposite side across the speaker 3 for silencing. The noise sound waves 22 and the sound waves 21 for silencing collide against each other at the front surface and generate sound wave interference according to such constitution. Since the sound waves of the low-frequency region propagating in the form of plane waves collide at the front surfaces the efficient sound wave interference is generated.

5. 发明专利

JPH07334173A SOUND WAVE RADIATOR FOR SILENCING OF ACTIVE NOISE CONTROL SYSTEM 失效
公开(公告)号：JPH07334173A
公开(公告)日：1995-12-22
申请号：JP12546594
申请日：1994-06-07
申请人： DAI DAN CO LTD
发明人： YAMASHITA REIJI , ITO SHUICHI , TANAKA YASUNOBU , ASAYAMA HIROSHI
IPC分类号： F01N1/06 , F24F13/02 , G10K11/16 , G10K11/178 , H04R1/28
摘要： PURPOSE:To form a sound field which averts the generation of standing waves in a duct and has the same frequency as the frequency of a signal for silencing in the duct by providing the wall surface part of the duct to be installed with a speaker for silencing with plural partition walls extending radially in the duct from the speaker for silencing to divide the inside of the duct to passages having irregular-shaped sections. CONSTITUTION:The wall surface at the bottom of the duct 1 is provided with the speaker 3 for silencing so as to radiate sound waves for silencing within the duct 1. The wall surface part of the duct l installed with the speaker 3 for silencing is provided with the plural partition walls 21 extending radially in the duct from the speaker 3 for silencing by using thin sheet materials, by which the inside of the duct 1 is divided to the passages having the irregular- shaped sections. The sound waves for silencing radiated from the speaker 3 for silencing into the duct 1 generate reflection within the irregular sections, thereby preventing generation of the standing waves in the duct 1 according to such constitution.

6. 发明专利

JPH07334171A SPEAKER INSTALLING DEVICE FOR SILENCING OF ACTIVE NOISE CONTROL SYSTEM 失效
公开(公告)号：JPH07334171A
公开(公告)日：1995-12-22
申请号：JP12546394
申请日：1994-06-07
申请人： DAI DAN CO LTD
发明人： YAMASHITA REIJI , ITO SHUICHI , TANAKA YASUNOBU , ASAYAMA HIROSHI
IPC分类号： F01N1/00 , F24F13/02 , G10K11/16 , G10K11/178
摘要： PURPOSE:To avert sound wave interference and to improve a silencing effect by providing a duct wall surface facing a speaker for silencing which generates sound waves for silencing with a sound absorbing material. CONSTITUTION:The speaker 3 for silencing which generates sound waves for silencing is disposed in the aperture 20 of the wall surface of the duct 1 so as to radiate the sound waves 22 for silencing in the duct 1. The wall surface of the duct 1 facing the speaker 3 is provided with the sound absorbing material 21. The sound waves 22 for silencing radiated from the speaker 3 for silencing are absorbed by the sound absorbing material 21 according to such constitution and, therefore, the sound waves returning to the speaker 3 for silencing after reflection are decreased. Then, the sound wave interference generated between the wall surface installed with the speaker 3 for silencing and the wall surface of the duct 1 facing the wall surface is averted and the sound waves having the same frequency characteristic as the frequency characteristic of the signal for silencing are radiated in the duct 1.

7. 发明专利

JP2009218982A Sound field space control system 有权
标题翻译：声场空间控制系统
公开(公告)号：JP2009218982A
公开(公告)日：2009-09-24
申请号：JP2008062151
申请日：2008-03-12
申请人： Dai-Dan Co Ltd , ダイダン株式会社
发明人： TANAKA YASUNOBU , OMOTO AKIRA , FUJIWARA KYOJI
IPC分类号： H04R3/04 , G10K11/178 , G10K15/00
摘要： PROBLEM TO BE SOLVED: To provide a sound field space control system for creating a sound having a preferable frequency characteristic by adjusting the volume of a sound in a predetermined frequency band, among sounds generated from a sound source. SOLUTION: In a sound field space control system 10A, each of target signal generating devices 29, 30 converts a third input signal into a target signal having a desired frequency band and desired volume, each of error signal output devices 31, 32, 33, 34 outputs an error signal obtained by subtracting the target signal from a second input signal, and each of interference signal generating devices 27, 28 generates an interference signal, that becomes a second sonic wave, using a third input signal received from each of third signal output devices 23, 24, 25, 26 and the error signal received from each of the error signal output devices 31, 32, 33, 34. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种声场空间控制系统，用于通过调节从声源产生的声音中的预定频带中的声音的音量来产生具有优选频率特性的声音。解决方案：在声场空间控制系统10A中，目标信号发生装置29,30中的每一个将第三输入信号转换为具有期望频带和期望音量的目标信号，每个误差信号输出装置31,32 33,34输出通过从第二输入信号中减去目标信号而获得的误差信号，并且每个干扰信号产生装置27,28使用从每一个接收的第三输入信号产生成为第二声波的干扰信号第三信号输出装置23,24,25,26以及从每个误差信号输出装置31,32,33,34接收的误差信号。（C）2009年，JPO和INPIT

8. 发明专利

JP2009175535A Active noise eliminating system 有权
标题翻译：主动噪声消除系统
公开(公告)号：JP2009175535A
公开(公告)日：2009-08-06
申请号：JP2008015249
申请日：2008-01-25
申请人： Dai-Dan Co Ltd , ダイダン株式会社
发明人： TANAKA YASUNOBU , OMOTO AKIRA , FUJIWARA KYOJI
IPC分类号： G10K11/178 , F24F13/02 , G10K11/16
摘要： PROBLEM TO BE SOLVED: To provide an active noise eliminating system, applying a favorable acoustic environment of a second air conditioning duct to a first air conditioning duct. SOLUTION: This active noise eliminating system 10A includes: the second air conditioning duct 12 different from the first air conditioning duct 11, a noise eliminator 16 for reducing a first sound wave generated from a noise source 19 and propagating through the second air conditioning duct 12, a target microphone 17, which detects a reduced sound wave of the first wave reduced by the noise eliminator 16 in time series and also outputs the reduced sound wave as a third input signal; and a first subtraction device 27, which receives a second input signal from an error microphone 14, receives a third input signal from the target microphone 17, and generates an error signal obtained by removing the third input signal from the second input signal, wherein an interference signal generator 28 generates an interference signal using a fourth input signal received from a second subtraction device 29 and the error signal received from the first subtraction device 27. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种有源噪声消除系统，将第二空调管道的良好声学环境施加到第一空调管道。解决方案：该有源噪声消除系统10A包括：与第一空调管道11不同的第二空调管道12，用于减少从噪声源19产生并传播通过第二空气的第一声波的噪声消除器16 调节管道12，目标传声器17，其以时间序列检测由噪声消除器16减小的第一波的降低的声波，并且还将减小的声波作为第三输入信号输出; 并且从误差麦克风14接收第二输入信号的第一减法装置27从目标麦克风17接收第三输入信号，并产生从第二输入信号中去除第三输入信号而获得的误差信号，其中，干扰信号发生器28使用从第二减法装置29接收的第四输入信号和从第一减法装置27接收的误差信号来产生干扰信号。（C）2009，JPO＆INPIT

9. 发明专利

JP2009175534A Active noise eliminating system 有权
标题翻译：主动噪声消除系统
公开(公告)号：JP2009175534A
公开(公告)日：2009-08-06
申请号：JP2008015220
申请日：2008-01-25
申请人： Dai-Dan Co Ltd , ダイダン株式会社
发明人： TANAKA YASUNOBU , OMOTO AKIRA , FUJIWARA KYOJI
IPC分类号： G10K11/178 , F24F13/02 , G10K11/16
摘要： PROBLEM TO BE SOLVED: To provide an active noise eliminating system, optionally and freely selecting a frequency band to be eliminated from noise, and canceling only the sound of selected frequency band. SOLUTION: This active noise eliminating system 10A includes: a filter 21 generating a pseudo feedback signal, which estimates a second sound wave reaching from a speaker 13 to a microphone 11; a subtraction device 22 generating a third input signal obtained by removing a pseudo feedback signal from a first input signal; a target signal generating device 24 for controlling the frequency characteristic of a third input signal to convert the third input signal to a target signal having a predetermined frequency band and sound pressure level; and a subtraction device 25 generating an error signal obtained by removing the target signal from the second input signal, an interference signal generating device 23 generates an interference signal using the third input signal received from the subtraction device 22 and an error signal received from the subtraction device 25. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供有源噪声消除系统，可选地和自由地选择要从噪声中消除的频带，并且仅消除所选频带的声音。解决方案：该有源噪声消除系统10A包括：滤波器21，其产生伪反馈信号，该伪反馈信号估计从扬声器13到达麦克风11的第二声波; 产生通过从第一输入信号去除伪反馈信号而获得的第三输入信号的减法装置22; 用于控制第三输入信号的频率特性以将第三输入信号转换为具有预定频带和声压级的目标信号的目标信号发生装置24; 以及产生通过从第二输入信号去除目标信号而获得的误差信号的减法装置25，干扰信号发生装置23使用从减法装置22接收的第三输入信号和从减法接收的误差信号产生干扰信号设备25.版权所有（C）2009，JPO＆INPIT

10. 发明专利

JPH10187201A ADAPTIVE TYPE ACTIVE SILENCER 失效
公开(公告)号：JPH10187201A
公开(公告)日：1998-07-14
申请号：JP34854196
申请日：1996-12-26
申请人： DAI DAN CO LTD
发明人： TANAKA YASUNOBU , AWATA MASATAKE
IPC分类号： F24F13/02 , G05B9/02 , G10K11/16 , G10K11/178
摘要： PROBLEM TO BE SOLVED: To provide an adaptive type active silencer capable of calculating the input power of a microphone and the output power of a speaker, detecting which abnormality is generated, executing suitable processing, and restoring the abnormal state to a normal control again. SOLUTION: A noise suppressing sound wave generating circuit 3 for calculating the input power P1 of a 1st microphone 2, for detecting a noise propagated through the inside of a duct 1, the input power P2 of a 2nd microphone 6 for detecting a noise suppressing state in the duct 1 and the output power Pout of a speaker 7 for radiating a noise suppressing sound wave into the duct 1, comparing P2 /P1 with a reference value, comparing the Pout with the reference value, and at the time of detecting abnormality, processing the abnormality and calculating a noise suppressing sound wave to be radiated from the speaker 7 is controlled.

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