中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

7 records (took 0.019 seconds)

    AUDIO SIGNAL PLAYBACK DEVICE, METHOD, AND RECORDING MEDIUM
    3.
    发明申请
    AUDIO SIGNAL PLAYBACK DEVICE, METHOD, AND RECORDING MEDIUM 有权
    音频信号播放装置，方法和记录媒体

    公开(公告)号：US20150215721A1

    公开(公告)日：2015-07-30

    申请号：US14423767

    申请日：2013-08-23

    Applicant: Sharp Kabushiki Kaisha

    Inventor： Junsei Sato ,  Hisao Hattori

    IPC: H04S5/00 ,  H04S3/00 ,  H04S7/00

    CPC classification number: H04S5/005 ,  H04R2499/15 ,  H04S3/002 ,  H04S7/30 ,  H04S7/307 ,  H04S2400/01 ,  H04S2400/07 ,  H04S2400/11 ,  H04S2420/05 ,  H04S2420/07 ,  H04S2420/13

    Abstract: Even in a case where an audio signal is played back with a low cost-restricted speaker group using a wavefront synthesis playback type, it is possible to faithfully recreate a sound image from any listening position, and to prevent sound in a low frequency band from falling short of sound pressure.An audio signal playback device includes a conversion unit that performs discrete Fourier transform on each of 2 channel audio signals obtained from a multi-channel input audio signal; a correlation signal extraction unit that, disregarding a direct current component, extracts a correlation signal (164) from the 2 channel audio signals (161) and (162) that result from the discrete Fourier transform, and additionally pulls a correlation signal in a lower frequency than a predetermined frequency flow out of the correlation signal (164); and an output unit that, for example, allocates the pulled-out correlation signal to a virtual sound source (167) in such a manner that a time difference in a sound output between adjacent speakers that are output destinations falls within a range of 2Δx/c (here, Δx is set to be a distance between the adjacent speakers, and c is a sound speed), and outputs a result of the allocation from one portion or all portions of the speaker group.

    Abstract translation: 即使在使用波前合成播放类型的低成本限制扬声器组播放音频信号的情况下，也可以忠实地从任何聆听位置重新创建声音图像，并且防止来自低频带的声音 声压不足。 音频信号重放装置包括：转换单元，对从多声道输入音频信号获得的每个2声道音频信号进行离散付里叶变换; 相关信号提取单元，其忽略直流分量，从离散傅里叶变换产生的2声道音频信号（161）和（162）中提取相关信号（164），并且另外将相关信号拉低 频率超过相关信号（164）中的预定频率流动; 以及输出单元，其例如将所拉出的相关信号分配给虚拟声源（167），使得输出目的地的相邻扬声器之间的声音输出的时间差落入2＆Dgr的范围内; x / c（这里，＆Dgr; x被设置为相邻扬声器之间的距离，c是声速），并且从扬声器组的一部分或全部输出分配结果。

    Audio signal playback device, method, and recording medium
    4.
    发明授权
    Audio signal playback device, method, and recording medium 有权

    公开(公告)号：US09661436B2

    公开(公告)日：2017-05-23

    申请号：US14423767

    申请日：2013-08-23

    Applicant: Sharp Kabushiki Kaisha

    Inventor： Junsei Sato ,  Hisao Hattori

    IPC: H04S5/00 ,  H04S3/00 ,  H04S7/00

    CPC classification number: H04S5/005 ,  H04R2499/15 ,  H04S3/002 ,  H04S7/30 ,  H04S7/307 ,  H04S2400/01 ,  H04S2400/07 ,  H04S2400/11 ,  H04S2420/05 ,  H04S2420/07 ,  H04S2420/13

    Abstract: An audio signal playback device includes a conversion unit that performs discrete Fourier transform on each of 2 channel audio signals obtained from a multi-channel input audio signal, a correlation signal extraction unit that, disregarding a direct current component, extracts a correlation signal from the 2 channel audio signals that result from the discrete Fourier transform, and additionally pulls a correlation signal in a lower frequency than a predetermined frequency flow out of the correlation signal, and an output unit that allocates the pulled-out correlation signal to a virtual sound source in such a manner that a time difference in a sound output between adjacent speakers falls within a range of 2Δx/c (where, Δx is a distance between the adjacent speakers, and c is the speed of sound), and outputs a result of the allocation from one portion or all portions of the speaker group.

    LINE ARRAY SPEAKER
    6.
    发明申请
    LINE ARRAY SPEAKER 审中-公开
    线阵列扬声器

    公开(公告)号：US20140348352A1

    公开(公告)日：2014-11-27

    申请号：US14361735

    申请日：2012-11-29

    Applicant: Sharp Kabushiki Kaisha

    Inventor： Hisao Hattori ,  Junsei Sato

    IPC: H04R1/02

    CPC classification number: H04R1/02 ,  H04R1/403 ,  H04R2201/403 ,  H04R2400/11 ,  H04S2420/13

    Abstract: A line array speaker in which interference between back pressures of adjacent speakers is reduced is provided. The line array speaker includes three or more cone-shaped speaker units including diaphragms vibrated by magnetic circuit portions. The speaker units are attached to a rectangular baffle plate 2 such that the speaker units are arranged side by side along a single line in the longitudinal direction of the baffle plate 2. The diaphragms are supported by respective frames 10 which are formed by aluminum die casting and which have openings 10a, 10a in upper and lower regions. Each frame 10 has no opening 10a in at least one region in an arrangement direction of the speaker units. Alternatively, the frame 10 of each speaker unit is configured so that the area of openings 10a, 10a in the regions in the arrangement direction is smaller than the area of openings 10a, 10a in other regions.

    Abstract translation: 提供了一种线阵列扬声器，其中相邻扬声器的背压之间的干扰减小。 线阵列扬声器包括三个或更多个锥形扬声器单元，包括由磁路部分振动的隔膜。 扬声器单元附接到矩形挡板2，使得扬声器单元沿着挡板2的纵向方向上的单线并排布置。隔膜由相应的框架10支撑，框架10由铝压铸 并且在上部和下部区域中具有开口10a，10a。 每个框架10在扬声器单元的布置方向上的至少一个区域中不具有开口10a。 或者，每个扬声器单元的框架10被构造成使得在其他区域中，布置方向上的区域中的开口10a，10a的面积小于开口10a，10a的面积。

    Speaker arranged position presenting apparatus
    7.
    发明授权
    Speaker arranged position presenting apparatus 有权

    公开(公告)号：US10547962B2

    公开(公告)日：2020-01-28

    申请号：US16064586

    申请日：2016-12-21

    Applicant: SHARP KABUSHIKI KAISHA

    Inventor： Takeaki Suenaga ,  Hisao Hattori ,  Ryuhji Kitaura

    IPC: H04S7/00 ,  H04R5/04 ,  H04S3/00 ,  H04R5/02

    Abstract: The disclosure automatically calculates an arranged position of a speaker that is suitable to a user, and presents information relating to the arranged position to the user. Aspects relate to a speaker arranged position presenting apparatus for presenting arranged positions of a plurality of speakers configured to output multi-channel audio signals as physical vibrations, the speaker arranged position presenting apparatus including: a speaker arranged position instructing unit configured to calculate arranged positions of the plurality of speakers, based on at least one of a feature amount of input content data or input information for specifying an environment in which the input content data is to be played; and a presenting unit configured to present the arranged positions of the plurality of the speakers that have been calculated.

Patent Agency Ranking