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1. 发明授权

US4751739A Apparatus and method for controlling tone quality 失效
标题翻译：用于控制音质的装置和方法
公开(公告)号：US4751739A
公开(公告)日：1988-06-14
申请号：US921768
申请日：1986-10-22
申请人： Mitsuhiko Serikawa , Akihisa Kawamura , Hiroyuki Takewa , Katsuaki Sato
发明人： Mitsuhiko Serikawa , Akihisa Kawamura , Hiroyuki Takewa , Katsuaki Sato
IPC分类号： H03G5/02 , H03G5/16 , H04R3/14 , H03G5/00
CPC分类号： H03G5/165
摘要： A digital signal represents a desired amplitude frequency characteristic. A desired transmission characteristic is derived from the desired amplitude frequency characteristic. A sound signal is processed in accordance with the desired transmission characteristic. The processed sound signal is converted by a speaker into corresponding sound. The process of the sound signal corrects and compensates for the original sound pressure frequency characteristic of the speaker and thereby actualizes the desired amplitude frequency characteristic.
摘要翻译：数字信号表示期望的振幅频率特性。从期望的幅度频率特性导出期望的传输特性。根据期望的传输特性来处理声音信号。经处理的声音信号由扬声器转换为相应的声音。声音信号的处理校正和补偿扬声器的原始声压频率特性，从而实现期望的振幅频率特性。

2. 发明授权

US5164840A Apparatus for supplying control codes to sound field reproduction apparatus 失效
标题翻译：用于向声场复制装置提供控制代码的装置
公开(公告)号：US5164840A
公开(公告)日：1992-11-17
申请号：US400190
申请日：1989-08-28
申请人： Akihisa Kawamura , Masaharu Matsumoto , Mitsuhiko Serikawa , Ryo Tagami , Katsuaki Sato , Hiroko Yoshida , Hikari Hashimoto
发明人： Akihisa Kawamura , Masaharu Matsumoto , Mitsuhiko Serikawa , Ryo Tagami , Katsuaki Sato , Hiroko Yoshida , Hikari Hashimoto
IPC分类号： G11B20/00 , G11B27/00 , G11B27/10 , G11B27/32 , G11B27/34 , H04N9/802 , H04S1/00
CPC分类号： G11B20/00992 , G11B27/007 , G11B27/107 , G11B27/322 , G11B27/34 , H04N9/802 , H04S1/007
摘要： Control codes for controlling processing of an audio signal by a sound field variation circuit to produce desired sound fields are recorded on a monaural track of a video tape concurrent with recording of video and audio signals, and can thereby be subsequently played back for producing sound fields which are respectively synchronized with video images.

3. 发明授权

US5144673A Reflection sound compression apparatus 失效
标题翻译：反射声压缩装置
公开(公告)号：US5144673A
公开(公告)日：1992-09-01
申请号：US623619
申请日：1990-12-07
申请人： Masaharu Matsumoto , Mitsuhiko Serikawa , Akihisa Kawamura , Hiroko Yoshida , Katsuaki Sato
发明人： Masaharu Matsumoto , Mitsuhiko Serikawa , Akihisa Kawamura , Hiroko Yoshida , Katsuaki Sato
IPC分类号： G10K15/00 , E04B1/99 , G10K15/08 , H03G5/24
CPC分类号： E04B1/99 , G10K15/08
摘要： A reflection sound compression apparatus extracts and compresses, most appropriately with a physical evaluation value, an impulse response of a hall, etc. which is obtained by calculation and actual experiments to reflection sounds in a number required by a sound field controller by using a learning identification method.

4. 发明授权

US5233661A Sound field variable apparatus 失效
标题翻译：声场可变设备
公开(公告)号：US5233661A
公开(公告)日：1993-08-03
申请号：US687695
申请日：1991-04-19
申请人： Akihisa Kawamura , Mitsuhiko Serikawa , Masaharu Matsumoto , Hiroko Numazu , Katsuaki Sato
发明人： Akihisa Kawamura , Mitsuhiko Serikawa , Masaharu Matsumoto , Hiroko Numazu , Katsuaki Sato
IPC分类号： G01H3/00 , G01H17/00 , G10K11/178 , G10K15/00 , H04R3/02 , H04R27/00 , H04S1/00
CPC分类号： H04R27/00 , H04R3/02
摘要： A sound field is generated responsive to direct sound picked up by a direct-sound collecting microphone and indirect-sound picked up by an indirect-sound collecting microphone. Respective processing circuits are provided for signal processing the sound signals of the direct-sound collecting microphone and the indirect-sound collecting microphone. An adaptive filter is provided having a transfer function equal to a transfer function from a reproducing speaker to the indirect-sound collecting microphone. The output of the signal processing circuit associated with the indirect-sound collecting microphone is filtered by the adaptive filter, and the output of the adaptive filter is subtracted from the output of the indirect-sound collecting microphone. The output of the subtractor is then applied to the signal processing circuit associated with the indirect-sound collecting microphone for signal processing. The transfer function is initially set in the adaptive filter by applying an output of a signal generator thereto.

5. 发明授权

US5123050A Sound field control system 失效
标题翻译：声场控制系统
公开(公告)号：US5123050A
公开(公告)日：1992-06-16
申请号：US596086
申请日：1990-10-11
申请人： Mitsuhiko Serikawa , Masaharu Matsumoto , Akihisa Kawamura , Katsuaki Sato
发明人： Mitsuhiko Serikawa , Masaharu Matsumoto , Akihisa Kawamura , Katsuaki Sato
IPC分类号： G10K15/08 , H03G5/16 , H03H17/02 , H04S1/00
CPC分类号： H04S1/002 , G10K15/08 , H03G5/165 , H03H17/0264 , H04S1/007
摘要： In the process of forming the effect sound for reproducing a sound field, a down-sampling part for reducing the sampling frequency of the digital signal is disposed before the step of the digital operation which becomes the central part of the forming process, by which a large amount of operation processing is carried out at a low sampling rate. With respect to the direct sound, processing such as gain adjustment is carried out without decreasing the sampling frequency. This results in a sound field control system which permits one to realize a higher quality and natural sound field control effect without significantly increasing the amount of hardware needed.

6. 发明授权

US5073942A Sound field control apparatus 失效
标题翻译：声场控制装置
公开(公告)号：US5073942A
公开(公告)日：1991-12-17
申请号：US645476
申请日：1991-01-24
申请人： Hiroko Yoshida , Mitsuhiko Serikawa , Akihisa Kawamura , Masaharu Matsumoto , Katsuaki Sato
发明人： Hiroko Yoshida , Mitsuhiko Serikawa , Akihisa Kawamura , Masaharu Matsumoto , Katsuaki Sato
IPC分类号： G10H1/18 , G10H1/00 , H03H17/00 , H03H17/06
CPC分类号： G10H1/0091 , G10H2210/301 , Y10S84/26
摘要： A sound field switcher inputs an output sound field signal from a sound field producer. The inputted sound field signal is delayed sequentially by plural delayers, after which they are multiplied by coefficients by plural multipliers, and the multiplied results are all added by an adder. Coefficients stored in an area of a memory indicated by a coefficient counter are read out and set to the plural multipliers. The sound field switcher carries out control of the timing for switching the sound field signal produced by the sound field producer and the timing for the coefficient counter to commence counting. Assuming the time required for switching the sound field to be N sampling periods, in case of carrying out a sound field switching from a sound field A to a sound field B, a sound field switching controller issues an order to the coefficient counter so as to count up one by one from 0 to N, and on each count the coefficients stored in an area of the coefficient memory is set to the multipliers. When the count value of the coefficient counter comes to (N/2) or nearest to (N/2), the sound field switching controller issues an order to the sound field producer to output the sound field signal of the sound field B. When the count value of the coefficient counter comes to N, the switching from the sound field A to the sound field B is completed.

7. 发明授权

US5073946A Thin speaker having an enclosure with an open portion and a closed portion 失效
标题翻译：具有开放部分和封闭部分的外壳的薄型扬声器
公开(公告)号：US5073946A
公开(公告)日：1991-12-17
申请号：US441918
申请日：1989-11-28
申请人： Katsuaki Satoh , Kazue Sato , Kousaku Murata , Tsuneo Tanaka , Shuji Saiki , Satoshi Takayama , Hiroyuki Takewa , Mitsuhiko Serikawa , Seiichi Ishikawa , Sawako Usuki , Yoichi Kimura , Shuichi Obata
发明人： Katsuaki Satoh , Kazue Sato , Kousaku Murata , Tsuneo Tanaka , Shuji Saiki , Satoshi Takayama , Hiroyuki Takewa , Mitsuhiko Serikawa , Seiichi Ishikawa , Sawako Usuki , Yoichi Kimura , Shuichi Obata
IPC分类号： H04R1/28 , H04R1/34 , H04R7/04
CPC分类号： H04R1/2834 , H04R1/345 , H04R7/04
摘要： A speaker which is thin but which is capable of providing high-fidelity reproduction and ensuring a suitable level of sound pressure even when it is brought close to a wall. A closed chamber is formed behind one part of a disphragm mounted in an enclosure, and an open chamber is formed behind another part of the diaphragm. At least one voice coil driver unit is connected to the diaphragm. The phase difference between sounds radiated from the front and rear surfaces of the diaphragm is increased as large as possible by using an acoustic duct for the sound radiated through the open chamber, thereby minimizing cancellation of sounds and improving the sound pressure level.

8. 发明授权

US4899390A Thin speaker having an enclosure within an open portion and a closed portion 失效
标题翻译：薄型扬声器具有开口部分内的外壳和封闭部分
公开(公告)号：US4899390A
公开(公告)日：1990-02-06
申请号：US96528
申请日：1987-09-15
申请人： Hiroyuki Takewa , Mitsuhiko Serikawa , Seiichi Ishikawa , Sawako Usuki , Yoichi Kimura , Shuichi Obata
发明人： Hiroyuki Takewa , Mitsuhiko Serikawa , Seiichi Ishikawa , Sawako Usuki , Yoichi Kimura , Shuichi Obata
IPC分类号： H04R1/28 , H04R1/34 , H04R7/04
CPC分类号： H04R1/2834 , H04R1/345 , H04R7/04
摘要： A speaker which is thin but which is capable of providing high-fidelity reproduction and ensuring a suitable level of sound pressure even when it is brought close to a wall. A closed chamber is formed behind one part of a diaphragm mounted in an enclosure, and an open chamber is formed behind another part of the diaphragm. At least one voice coil drive unit is connected to the diaphragm. The phase difference between sounds radiated from the front and rear surfaces of the diaphragm is increased as large as possible by using an acoustic duct for the sound radiated through the open chamber, thereby minimizing cancellation of sounds and improving the sound pressure level.
摘要翻译：扬声器虽然薄但能够提供高保真的再现性，并且即使当靠近墙壁时也能确保合适的声压水平。在安装在外壳中的隔膜的一部分之后形成封闭的室，并且隔膜的另一部分后面形成开放室。至少一个音圈驱动单元连接到隔膜。通过使用用于通过开放室辐射的声音的声管，尽可能地增大从隔膜的前表面和后表面辐射的声音之间的相位差，从而最小化声音的消除和提高声压级。

9. 发明授权

US5684881A Sound field and sound image control apparatus and method 失效
标题翻译：声场和声像控制装置及方法
公开(公告)号：US5684881A
公开(公告)日：1997-11-04
申请号：US247269
申请日：1994-05-23
申请人： Mitsuhiko Serikawa , Ryou Tagami , Akihisa Kawamura , Masaharu Matsumoto , Mikio Oda , Hiroko Numazu
发明人： Mitsuhiko Serikawa , Ryou Tagami , Akihisa Kawamura , Masaharu Matsumoto , Mikio Oda , Hiroko Numazu
IPC分类号： H04S1/00 , H04N5/00 , H04B1/00
CPC分类号： H04S1/007 , H04S1/002
摘要： The apparatus of the invention calculates filter coefficients for controlling sound field and sound image, based on a plurality of first impulse response signals and a pair of second impulse response signals. The plurality of first impulse response signals indicate impulse responses from loudspeakers reproducing audio signals to both ears of a listener. The pair of second impulse response signals indicate impulse responses from a reference loudspeaker at a position at which a sound image is localized to both ears of the listener. The apparatus includes: a feature extracting section for receiving the pair of second impulse response signals, for extracting parameters representing features of the pair of second impulse response signals, and for outputting parameter signals; a signal adjusting section for adjusting at least one of the plurality of first impulse response signals based on the parameter signals, and for outputting a pair of third impulse response signals having the same features as the extracted features; and a coefficient calculating section for calculating the filter coefficients for controlling the sound field and sound image, based on the plurality of first impulse response signals and the pair of third impulse response signals applied from the signal adjusting means.
摘要翻译：本发明的装置基于多个第一脉冲响应信号和一对第二脉冲响应信号来计算用于控制声场和声像的滤波器系数。多个第一脉冲响应信号指示从再现音频信号的扬声器到听众的双耳的脉冲响应。一对第二脉冲响应信号指示在声音图像被定位在收听者的两只耳朵的位置处的参考扬声器的脉冲响应。该装置包括：特征提取部分，用于接收一对第二脉冲响应信号，用于提取表示该对第二脉冲响应信号的特征的参数，并用于输出参数信号; 信号调整部分，用于基于参数信号调整多个第一脉冲响应信号中的至少一个，并输出具有与提取的特征相同特征的一对第三脉冲响应信号; 以及系数计算部分，用于基于从信号调节装置施加的多个第一脉冲响应信号和一对第三脉冲响应信号，来计算用于控制声场和声像的滤波器系数。

10. 发明授权

US5617478A Sound reproduction system and a sound reproduction method 失效
标题翻译：声音再现系统和声音再现方法
公开(公告)号：US5617478A
公开(公告)日：1997-04-01
申请号：US225602
申请日：1994-04-11
申请人： Ryou Tagami , Takeshi Norimatsu , Masaharu Matsumoto , Mikio Oda , Mitsuhiko Serikawa , Akihisa Kawamura , Hiroko Numazu
发明人： Ryou Tagami , Takeshi Norimatsu , Masaharu Matsumoto , Mikio Oda , Mitsuhiko Serikawa , Akihisa Kawamura , Hiroko Numazu
IPC分类号： H03G5/00 , H04R5/04 , H04R29/00 , H03G3/00
CPC分类号： H04R5/04 , H03G5/005
摘要： A sound reproduction system for automatically conducting a tone control for an audio signal according to the present invention includes: an input terminal for inputting an audio signal; a judgment circuit for determining a ratio between a stereophonic signal component and a monophonic signal component of the input audio signal and for outputting a judgment signal; a signal processing section for receiving the input audio signal and processing the input audio signal so as to generate an output signal having uniform transmission characteristics irrespective of the listening position; an adder for receiving the input audio signal and the output signal and for adding the input audio signal with the output signal at a certain addition ratio based on the judgment signal so as to generate an added signal; and a loudspeaker for receiving the added signal and for reproducing the added signal in a plurality of positions.
摘要翻译：根据本发明的用于自动进行音频信号的音调控制的声音再现系统包括：用于输入音频信号的输入端; 用于确定所述输入音频信号的立体声信号分量和单声道信号分量之间的比率并用于输出判断信号的判断电路; 信号处理部分，用于接收输入音频信号并处理输入音频信号，以产生具有均匀传输特性的输出信号，而与收听位置无关; 加法器，用于接收所述输入音频信号和所述输出信号，并且用于基于所述判断信号以一定的相加比例将所述输入音频信号与所述输出信号相加以产生相加信号; 以及用于接收所附加的信号并用于在多个位置再现附加的信号的扬声器。

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