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    • 1. 发明授权
    • Sound reproducing system
    • 声音再现系统
    • US06944302B2
    • 2005-09-13
    • US10344542
    • 2002-06-18
    • Masahide OnishiFumiyasu KonnoAkinori Hasegawa
    • Masahide OnishiFumiyasu KonnoAkinori Hasegawa
    • H04R3/00H04R29/00
    • H04R3/002H04R2499/13
    • In a sound reproducing apparatus, a target control value is determined automatically from a noise and a sound radiated from a loudspeaker unit, and a volume of a reproduced sound is naturally compensated according to an amount of the noise against a masking due to a noise at a listening point. A first microphone is located near a loudspeaker box, and a second microphone is located in the loudspeaker box. A gain of s variable gain amplifier is changed so that an integrated value of a signal obtained by filtering and adding the outputs of the microphone may be equal to an integrated value of the filtered signal of the output of the variable gain amplifier.
    • 在声音再现装置中,从噪声和从扬声器单元辐射的声音自动确定目标控制值,并且根据由于噪声导致的噪声的噪声量而自然地补偿再现声音的音量 一个听点。 第一麦克风位于扬声器箱附近,并且第二麦克风位于扬声器箱中。 改变可变增益放大器的增益,使得通过对麦克风的输出进行滤波和相加得到的信号的积分值可以等于可变增益放大器的输出的滤波信号的积分值。
    • 2. 发明授权
    • Sound reproducing device
    • 声音再现装置
    • US06370253B1
    • 2002-04-09
    • US09486449
    • 2000-05-25
    • Masahide OnishiFumiyasu KonnoAkinori Hasegawa
    • Masahide OnishiFumiyasu KonnoAkinori Hasegawa
    • H04R300
    • H04R3/007
    • A signal produced by a speaker is removed from a totaled sound of noise around the speaker and the signal from the speaker, thereby extracting correctly the noise around. This structure allows an audio reproducing apparatus of the present invention to masking compensation more naturally. This audio reproducing apparatus includes a detecting coil (17) disposed on a bobbin (16) of the speaker (13), and a microphone (15) disposed around the speaker (13). An output signal from the detecting coil (17) and an output signal from the microphone (15) are respectively filtered, and then undergo an adding process. An input signal is adjusted its magnitude based on these processed signals.
    • 由扬声器产生的信号从扬声器周围的总噪声和来自扬声器的信号中去除,从而正确地提取周围的噪声。 这种结构允许本发明的音频再现装置更自然地掩蔽补偿。 该音频再现装置包括设置在扬声器(13)的线轴(16)上的检测线圈(17)和设置在扬声器(13)周围的麦克风(15)。 来自检测线圈(17)的输出信号和来自麦克风(15)的输出信号分别被滤波,然后进行加法处理。 输入信号根据这些处理的信号调整其幅度。
    • 3. 发明授权
    • Speaker
    • 扬声器
    • US06421449B1
    • 2002-07-16
    • US09526726
    • 2000-03-16
    • Akinori HasegawaFumiyasu KonnoMasahide Onishi
    • Akinori HasegawaFumiyasu KonnoMasahide Onishi
    • H04R100
    • H04R9/046
    • A speaker having a voice coil bobbin wound around with the voice coil and a detection coil together. The detection coil is formed by a wire whose diameter is smaller than one fourth of that of the wire used for the voice coil, and wound in a space among the voice coil wires. In another example, the voice coil and the detection coil are formed using a flat type wire. In a speaker made in accordance with the present invention, the outer diameter of the whole coil structure containing a voice coil and a detection coil does not increase; as a result, decrement of the magnetic flux density in magnetic gap does not occur. Thus, the signals that proportionately represent the speaker vibration are made available without inviting deterioration in the efficiency of a speaker, nor an increased Q0.
    • 具有卷绕在音圈上的音圈筒和一个检测线圈的扬声器。 检测线圈由直径小于用于音圈的线的四分之一的导线形成,并缠绕在音圈线之间的空间中。 在另一示例中,音圈和检测线圈使用扁平线形成。 在根据本发明制造的扬声器中,包含音圈和检测线圈的整个线圈结构的外径不增加; 结果,不会发生磁隙中的磁通密度的减小。 因此,可以使成比例地表示扬声器振动的信号不会引起扬声器的效率的劣化,也不会增加Q0。
    • 9. 发明申请
    • Active noise controller
    • 主动噪声控制器
    • US20070172004A1
    • 2007-07-26
    • US10587566
    • 2005-11-08
    • Toshiyuki FunayamaYoshio NakamuraMasahide Onishi
    • Toshiyuki FunayamaYoshio NakamuraMasahide Onishi
    • H03D1/04
    • G10K11/178G10K2210/1282G10K2210/504
    • An active noise controller can determine the signal transmission characteristics from the power amplifier and the speaker to the microphone without using any special external measuring instrument and calculate a cosine correction value and a sine correction value without using an external computer. The active noise controller uses the cosine correction value and the sine correction value to actively reduce vibrational noise. The measurement mode is selected on touch panel (3), and correction value calculator (22) calculates cosine correction value C0 and sine correction value C1 by using filter coefficients W0 and W1 which allow error signal e′(n) to approach zero. Memory (23) stores these values C0 and C1.
    • 有源噪声控制器可以确定从功率放大器和扬声器到麦克风的信号传输特性,而不使用任何特殊的外部测量仪器,并且不使用外部计算机来计算余弦校正值和正弦校正值。 有源噪声控制器使用余弦校正值和正弦校正值来主动减少振动噪声。 在触摸面板(3)上选择测量模式,并且校正值计算器(22)通过使用允许误差信号e'(n)的滤波器系数W 0和W 1来计算余弦校正值C 0和正弦校正值C 1 接近零。 存储器(23)存储这些值C 0和C 1。
    • 10. 发明申请
    • Active noise cancellation system
    • 主动噪声消除系统
    • US20050053244A1
    • 2005-03-10
    • US10936600
    • 2004-09-09
    • Masahide OnishiYoshio NakamuraToshio InoueAkira Takahashi
    • Masahide OnishiYoshio NakamuraToshio InoueAkira Takahashi
    • G01H3/00A61F11/06B60R11/02G10K11/16G10K11/178H03B29/00H03H17/02H03H21/00
    • G10K11/17883G10K2210/128G10K2210/3046
    • In an active noise cancellation system having an adaptive filter that outputs a control signal, first and second speakers that emit a canceling signal generated based on the control signal, a microphone that detects an error signal, a correction filter that corrects the base signal by a correction value to generate a reference signal and a filter coefficient updater that successively updates the adaptive filter coefficient based on the error signal and reference signal such that the error signal is minimized, the correction value of the correction filter is set to a sum obtained by adding the transfer characteristic from the first speaker to the microphone, and a product obtained by multiplying the transfer characteristic from the second speaker to the microphone by the prescribed value, thereby enabling to reduce the number of microphones and avoid the increase in parts, the amount of work to provide complicated wiring to the microphones, and the computational load involved in updating the adaptive filter coefficient, while enabling to maintain an area in which noise can be reduced to the same level as that obtained before reducing the number of microphones.
    • 在具有输出控制信号的自适应滤波器的有源噪声消除系统中,发射基于控制信号生成的消除信号的第一和第二扬声器,检测误差信号的麦克风,校正基本信号的校正滤波器, 用于产生参考信号的校正值和基于误差信号和参考信号连续更新自适应滤波器系数的滤波器系数更新器,使得误差信号最小化,校正滤波器的校正值被设置为通过加法获得的和 从第一扬声器到麦克风的传送特性,以及通过将来自第二扬声器的传送特性与麦克风相乘规定值获得的乘积,由此能够减少麦克风的数量并避免部件的增加, 努力为麦克风提供复杂的布线,以及更新中涉及的计算负荷 g的自适应滤波器系数,同时使得能够将噪声降低到与减少麦克风数量之前获得的相同水平的区域。