公开(公告)号：US4300655A

公开(公告)日：1981-11-17

申请号：US151649

申请日：1980-05-20

申请人： Naraji Sakamoto ,  Shuji Saiki ,  Kazue Sato ,  Kousaku Murata ,  Hiroshi Yamamoto

发明人： Naraji Sakamoto ,  Shuji Saiki ,  Kazue Sato ,  Kousaku Murata ,  Hiroshi Yamamoto

IPC分类号： H04R7/08 ,  H04R7/06 ,  H04R7/10 ,  H04R9/06

CPC分类号： H04R7/10 ,  H04R7/06 ,  H04R9/06

摘要： An acoustic diaphragm for speakers having a sandwich structure constituted by a core material comprising an elongated web material bent to have a plurality of radial projections, and upper and lower surface members adhered to the upper and lower edges of the core member, as well as a method of producing the same. The acoustic diaphragm of the invention has a reduced weight while exhibiting a large flexural rigidity so that the nodal line during the resonance vibration can have a circular form which in turn offers a circular form of nodal line and increased speaker power. Also, the method of producing the invention permits easy fabrication of the acoustic diaphragm having a sandwich structure.

摘要翻译： 一种用于具有夹层结构的扬声器用声膜，该夹层结构由芯材构成，该芯材包括弯曲成具有多个径向突起的细长腹板材料，以及粘附到芯构件的上边缘和下边缘的上表面构件和下表面构件， 制作方法 本发明的隔膜具有减轻的重量，同时具有大的弯曲刚度，使得共振振动期间的节点线可以具有圆形形式，从而提供圆形形式的节点线和增加的扬声器功率。 此外，制造本发明的方法允许容易地制造具有夹层结构的声膜。

公开(公告)号：US3965479A

公开(公告)日：1976-06-22

申请号：US613899

申请日：1975-09-16

申请人： Naraji Sakamoto ,  Tatsuo Mitsui ,  Toshio Hayakawa

发明人： Naraji Sakamoto ,  Tatsuo Mitsui ,  Toshio Hayakawa

IPC分类号： G03G15/05 ,  B41J2/395 ,  G01D15/06 ,  G06K15/00 ,  H04N1/032 ,  H04N1/23

CPC分类号： B41J2/395 ,  G01D15/06

摘要： A multi-stylus printing head cell in which a plurality of styli or electrodes are placed in and bonded to a plurality of parallel grooves formed in one of the major surfaces of a base in such a way that one end portions of the styli may extended out of the base; the exposed conductors of a flat flexible cable are overlaid upon the styli and made into electrical connection therewith; a retaining plate is placed over the exposed conductors; and the legs or side walls of a U-shaped holder are folded inwards over the retaining plate, whereby the base, the styli, the flat flexible cable, the retainer and the holder may be securely held as a unitary construction.

摘要翻译： 一种多触笔打印头单元，其中多个测针或电极被放置在并结合到形成在基座的一个主表面中的多个平行凹槽中，使得测针的一个端部可以伸出 的基数 扁平柔性电缆的裸露导体覆盖在测针上并与之电连接; 将保持板放置在暴露的导体上; 并且U形保持器的腿或侧壁向内折叠在保持板上，由此基座，测针，扁平柔性电缆，保持器和保持器可以牢固地保持为一体式结构。

公开(公告)号：US5226089A

公开(公告)日：1993-07-06

申请号：US677471

申请日：1991-03-29

申请人： Sang-Lak Yoon ,  Naraji Sakamoto

发明人： Sang-Lak Yoon ,  Naraji Sakamoto

IPC分类号： H04R3/00 ,  H04R3/04

CPC分类号： H04R3/04

摘要： A circuit and method are disclosed for improving low frequency characteristics in a speaker by detecting the motion of a vibration system of the speaker to be fed back to the vibration system. The circuit detects the motion signal by bridge-balancing the input and output signals of the speaker to detect a voltage difference therebetween. Low frequency reproduction characteristics of the speaker are compensated by reducing lowest resonance frequency characteristics of the speaker and at the same time compensating intrinsic impedance characteristics thereof. The audio signal being reproduced is detected by bridge-balancing the output of the speaker, and dynamic impedance caused by the vibration system is detected by calculating the difference between the detected audio signal and an audio signal applied to the speaker. The motion of the vibration system is converted into acceleration motion at a lowest resonance frequency of the speaker and the motion of the vibration system is converted into a speed value to change resonance sharpness of the speaker. Thereafter, signal adding is performed such that a difference of converted acceleration motion is negatively fed back while a converted velocity value is positively fed back, and the feedback signals are added with the audio signal applied to the speaker so that low frequency reproduction characteristics of the speaker can be compensated.

摘要翻译： 公开了一种用于通过检测要反馈到振动系统的扬声器的振动系统的运动来改善扬声器中的低频特性的电路和方法。 电路通过桥接平衡扬声器的输入和输出信号来检测运动信号，以检测其间的电压差。 通过降低扬声器的最低谐振频率特性并同时补偿其本征阻抗特性来补偿扬声器的低频再现特性。 通过桥接平衡扬声器的输出来检测再现的音频信号，并且通过计算检测到的音频信号和施加到扬声器的音频信号之间的差异来检测由振动系统引起的动态阻抗。 振动系统的运动在扬声器的最低谐振频率处被转换成加速运动，并且振动系统的运动被转换成速度值以改变扬声器的谐振锐度。 此后，执行信号相加，使得转换的加速度运动的差异被反馈，同时转换的速度值被正反馈，并且反馈信号加上施加到扬声器的音频信号，使得低频再现特性 扬声器可以补偿。

公开(公告)号：US06718217B1

公开(公告)日：2004-04-06

申请号：US09200747

申请日：1998-11-30

申请人： Hironobu Shinohara ,  Kiyohiro Horie ,  Naraji Sakamoto ,  Tetsuo Fujihara

发明人： Hironobu Shinohara ,  Kiyohiro Horie ,  Naraji Sakamoto ,  Tetsuo Fujihara

IPC分类号： G06F1700

CPC分类号： G11B20/10527 ,  G10L25/90 ,  G11B20/00992

摘要： Disclosed herein is a digital audio tone evaluating system comprising an analyzer for subjecting a digital signal related to voice and/or music to signal processing, thereby operating a factor which expresses the auditory tone quality of the voice and/or the music by the digital signal in a digitized form. The system can objectively evaluate auditory tone quality by digital audio.

摘要翻译： 本文公开了一种数字音频评估系统，其包括用于对与语音和/或音乐相关的数字信号进行信号处理的分析器，从而通过数字信号操作表达语音和/或音乐的听觉音质的因子 以数字形式。 该系统可以通过数字音频客观评价听觉音质。