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    • 3. 发明申请
    • METHOD FOR DESIGNING AUDIO SIGNAL PROCESSING SYSTEM FOR HEARING AID, AUDIO SIGNAL PROCESSING SYSTEM FOR HEARING AID, AND HEARING AID
    • 用于听力助听器的音频信号处理系统,用于听力助听器和听力助听器的音频信号处理系统的设计方法
    • US20110135130A1
    • 2011-06-09
    • US13057286
    • 2009-08-03
    • Yutaka YamamotoMasaaki Nagajara
    • Yutaka YamamotoMasaaki Nagajara
    • H04R25/00
    • H04R25/353H04R25/356H04R2225/43
    • A hearing aid tailored to a hard-of-hearing person is designed using sampled-data control theory. The method is for designing an audio signal processing system for a hearing aid, wherein the system comprises an AD converter for converting an analog audio input signal (yc) inputted to the hearing aid into a digital audio input signal, a hearing aid digital filter (K(z)) for performing a signal processing on the digital audio input signal outputted from the AD converter, and a DA converter for converting a digital signal outputted from the hearing aid digital filter into an analog audio output signal to be outputted to the hard-of-hearing person. The hearing aid digital filter (K(z)) is designed according to sampled-data control theory so as to reduce an error (ec) occurring between: a restored analog signal (zc) obtained from filtering the analog audio output signal outputted from the DA converter through an analog filter (P(s)) that has characteristics corresponding to auditory characteristics of the hard-of-hearing person; and the analog audio signal (yc) inputted to the hearing aid.
    • 使用采样数据控制理论设计了针对难听者的助听器。 该方法用于设计用于助听器的音频信号处理系统,其中该系统包括用于将输入到助听器的模拟音频输入信号(yc)转换为数字音频输入信号的AD转换器,助听器数字滤波器 K(z)),用于对从AD转换器输出的数字音频输入信号执行信号处理;以及DA转换器,用于将从助听数字滤波器输出的数字信号转换为模拟音频输出信号,以输出到硬 听力人。 助听器数字滤波器(K(z))根据采样数据控制原理进行设计,以减少在以下情况之间发生的恢复的模拟信号(zc):从滤波器输出的模拟音频输出信号 DA转换器通过模拟滤波器(P(s))具有对应于难听者的听觉特征的特征; 和输入到助听器的模拟音频信号(yc)。
    • 8. 发明授权
    • Hard magnetic alloy, hard magnetic alloy compact and method for producing the same
    • 硬磁合金,硬磁合金紧凑型及其制造方法
    • US06692582B1
    • 2004-02-17
    • US09697632
    • 2000-10-26
    • Akinori KojimaAkihiro MakinoTakashi HatanaiYutaka YamamotoAkihisa Inoue
    • Akinori KojimaAkihiro MakinoTakashi HatanaiYutaka YamamotoAkihisa Inoue
    • H01F100
    • B82Y25/00H01F1/0579
    • A hard magnetic alloy in accordance with the present invention is composed of at least element T selected from the group consisting of Fe, Co and Ni, at least one rare earth element R, and boron (B). The hard magnetic alloy has an absolute value of the temperature coefficient of magnetization of 0.15%/° C. or less and a coercive force of 1 kOe, when being used in a shape causing a permeance factor of 2 or more. A hard magnetic alloy compact in accordance with the present invention has a texture, in which at least a part or all of the texture comprises an amorphous phase or fine crystalline phase having an average crystal grain size of 100 nm or less, is subjected to crystallization or grain growth under stress, such that a mixed phase composed of a soft magnetic or semi-hard magnetic phase and a hard magnetic phase is formed in the texture, and anisotropy is imparted to the crystal axis of the hard magnetic phase.
    • 根据本发明的硬磁合金由至少选自Fe,Co和Ni,至少一种稀土元素R和硼(B)的元素T组成。 当使用导磁系数为2以上的形状时,硬磁合金的磁化温度的绝对值为0.15%/℃以下,矫顽力为1kOe。 根据本发明的硬磁合金压块具有其中至少部分或全部组织包含平均晶粒尺寸为100nm以下的非晶相或细结晶相的织构,进行结晶化 或在应力下的晶粒生长,使得在织构中形成由软磁性或半硬磁性相和硬磁性相组成的混合相,并且赋予硬磁相的晶轴各向异性。