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    • 93. 发明申请
    • Apparatus and method for checking loudspeaker
    • 用于检查扬声器的装置和方法
    • US20060251265A1
    • 2006-11-09
    • US11414835
    • 2006-05-01
    • Kohei Asada
    • Kohei Asada
    • H04R29/00
    • H04R29/001H04R29/002
    • A loudspeaker checking apparatus includes a signal generating unit configured to generate a test tone signal by adding first and second sinusoidal signals of different frequencies; a control circuit configured to allow the signal generating unit to generate a plurality of test tone signals by varying the frequencies; an output circuit configured to simultaneously supply the plurality of test tone signals to a plurality of loudspeakers, respectively; an analyzing unit configured to perform frequency analysis on an output signal from a microphone that picks up test tones output from the plurality of loudspeakers; and a determining unit configured to determine whether the respective loudspeakers are normal or abnormal on the basis of an analysis result made by the analyzing unit.
    • 扬声器检查装置包括:信号生成单元,被配置为通过添加不同频率的第一和第二正弦信号来生成测试音调信号; 控制电路,被配置为允许信号生成单元通过改变频率来产生多个测试音信号; 输出电路,被配置为分别同时将多个测试音信号提供给多个扬声器; 分析单元,被配置为对来自麦克风的输出信号执行频率分析,所述麦克风拾取从所述多个扬声器输出的测试音; 以及确定单元,其被配置为基于由所述分析单元进行的分析结果来确定各个扬声器是正常还是异常。
    • 95. 发明申请
    • Audio signal processing method and apparatus device
    • 音频信号处理方法和装置装置
    • US20060050897A1
    • 2006-03-09
    • US10533612
    • 2003-10-10
    • Kohei AsadaTetsunori Itabashi
    • Kohei AsadaTetsunori Itabashi
    • H03G5/00H03G3/00
    • H04S3/008H04R3/12H04R2430/20
    • An audio signal processing method and apparatus in which the apparatus includes a plurality of digital filters, each supplied with an audio signal, and a speaker array. Outputs from the digital filters are supplied to speakers included in the speaker array to form a sound field. A predetermined delay time is set in each of the digital filters, to thereby form, in the sound field, a point where the sound pressure is higher than in the surrounding and a point where the sound pressure is lower than in the surrounding. A low-pass filter characteristic is given to the frequency response of the digital filters and a pseudo pulse train is used to enhance the setting resolution of the delay time.
    • 一种音频信号处理方法和装置,其中所述装置包括多个数字滤波器,每个被提供有音频信号,和扬声器阵列。 来自数字滤波器的输出被提供给扬声器阵列中包括的扬声器以形成声场。 在每个数字滤波器中设置预定的延迟时间,从而在声场中形成声压高于周围的点和声压低于周围的点。 给出了数字滤波器的频率响应的低通滤波器特性,并且使用伪脉冲串来提高延迟时间的设置分辨率。
    • 96. 发明申请
    • Sound-field correcting apparatus and method therefor
    • 声场校正装置及其方法
    • US20050265559A1
    • 2005-12-01
    • US11129989
    • 2005-05-16
    • Kohei Asada
    • Kohei Asada
    • B60R11/02H04R5/00H04S3/00H04S5/02H04S7/00
    • H04S7/301H04R2499/13H04S7/302H04S7/40
    • A sound-field correcting apparatus includes a sound-field correcting unit for executing, based on correcting information, predetermined audio signal processing for correcting a sound field, an information acquiring unit for acquiring the correcting information on each sound source position, a designating unit for designating, in a predetermined space range including the sound source positions, a target position serving as a position at which sound-field correction is to be performed, a correcting information acquiring unit for acquiring, based on the correcting information on each sound source position, correcting information corresponding to the target position designated by the designating unit, and a control unit for performing control based on the correcting information acquired by the correcting information acquiring unit so that the sound-field correcting unit executes the audio signal processing.
    • 声场校正装置包括:声场校正单元,用于基于校正信息执行用于校正声场的预定音频信号处理;信息获取单元,用于获取关于每个声源位置的校正信息;指示单元,用于 在包括声源位置的预定空间范围内指定用作要进行声场校正的位置的目标位置,校正信息获取单元,用于基于关于每个声源位置的校正信息, 校正与由指定单元指定的目标位置相对应的信息;以及控制单元,用于基于由校正信息获取单元获取的校正信息进行控制,使得声场校正单元执行音频信号处理。
    • 98. 发明授权
    • Speaker apparatus and electronic apparatus having speaker apparatus enclosed therein
    • 扬声器装置和具有扬声器装置的电子设备
    • US06731764B2
    • 2004-05-04
    • US09884417
    • 2001-06-19
    • Kohei AsadaTooru SasakiAkira KimuraTakayuki Mizuuchi
    • Kohei AsadaTooru SasakiAkira KimuraTakayuki Mizuuchi
    • H04R2500
    • H04R7/08H04R5/02H04R7/045H04R2205/022
    • A speaker apparatus in which the acoustic sound is radiated by flexural oscillations of a diaphragm in the form of a panel having a substantially flat surface. The speaker apparatus includes a panel-shaped diaphragm the outer rim of which can be oscillated substantially freely at least in the direction along the diaphragm thickness and at least one driver unit constituting an oscillation source secured to the diaphragm surface for imparting oscillations to the diaphragm. The diaphragm is set into flexural oscillations by oscillations applied from the driver unit driven on the basis of the playback input signal. By flexurally oscillating the diaphragm to radiate the acoustic sound, optimum frequency response characteristics can be obtained over a wide frequency range from the low to high frequency range. Moreover, the acoustic sound of optimum sound quality may be radiated in a state of minimum sound pressure level fluctuations over a frequency range from the low to high frequency range.
    • 一种扬声器装置,其中通过具有基本平坦表面的面板形式的隔膜的弯曲振荡辐射声音。 扬声器装置包括一个板状隔膜,其外边缘至少沿隔膜厚度的方向可以基本上自由地摆动,以及构成振动源的至少一个驱动单元,该驱动单元固定在隔膜表面上,用于向隔膜施加振动。 通过从基于播放输入信号驱动的驱动单元施加的振荡将隔膜设置为弯曲振荡。 通过弯曲地振动隔膜以辐射声音,可以在从低频到高频范围的宽频率范围内获得最佳的频率响应特性。 此外,可以在从低频到高频范围的频率范围内以最小声压级波动的状态辐射最佳声音质量的声音。