公开(公告)号：US09197978B2

公开(公告)日：2015-11-24

申请号：US13260738

申请日：2010-03-25

申请人： Hikaru Usami ,  Naoya Tanaka ,  Toshihiko Date

发明人： Hikaru Usami ,  Naoya Tanaka ,  Toshihiko Date

IPC分类号： H04R1/10 ,  H04R5/00 ,  H04R5/02 ,  H04S7/00 ,  G10L19/008 ,  H04S3/00

CPC分类号： H04S7/30 ,  G10L19/008 ,  H04R5/02 ,  H04R2205/024 ,  H04S3/004 ,  H04S7/302 ,  H04S7/304

摘要： A sound reproduction apparatus includes a sound source localization estimating unit that performs estimates using input audio signals in an acoustic space when the input audio signals are reproduced by speakers placed in standard positions; and a sound source signal separating unit that calculates a sound source localization signal and separates, from the input audio signals, sound source non-localization signals. Additionally, a sound source position parameter calculating unit calculates parameters indicating a position of the sound source localization signal in the acoustic space; and a reproduction signal generating unit uses the sound source position parameters to distribute the sound source localization signal to front speakers placed in the standard positions in front and headphones placed near the ears of a listener and in positions different from the standard positions, by combining the sound source localization signal and the sound source non-localization signals.

摘要翻译： 声音再现装置包括声源定位估计单元，当输入音频信号由放置在标准位置的扬声器再现时，使用声音空间中的输入音频信号进行估计; 以及声源信号分离单元，其计算声源定位信号，并从输入音频信号中分离声源非定位信号。 此外，声源位置参数计算单元计算表示声源定位信号在声学空间中的位置的参数; 并且再现信号生成单元使用声源位置参数来将声源定位信号分配到位于前面的标准位置的前置扬声器和放置在收听者的耳朵附近的耳机以及与标准位置不同的位置， 声源定位信号和声源非定位信号。

公开(公告)号：US20120020481A1

公开(公告)日：2012-01-26

申请号：US13260738

申请日：2010-03-25

申请人： Hikaru Usami ,  Naoya Tanaka ,  Toshihiko Date

发明人： Hikaru Usami ,  Naoya Tanaka ,  Toshihiko Date

IPC分类号： H04R5/00 ,  H04R5/02

CPC分类号： H04S7/30 ,  G10L19/008 ,  H04R5/02 ,  H04R2205/024 ,  H04S3/004 ,  H04S7/302 ,  H04S7/304

摘要： A sound reproduction apparatus includes: a sound source localization estimating unit (1) that estimates whether or not a sound image is localized using input audio signals in an acoustic space when the input audio signals are reproduced by speakers (FL, FR, SL, SR) placed in standard positions; a sound source signal separating unit (2) that calculates a sound source localization signal Z(i) indicating the sound image that is localized and separates, from the input audio signals, sound source non-localization signals (FLa, FRb, SLa, SLb) which are signal components not contributing to localization of the sound image; a sound source position parameter calculating unit (3) that calculates parameters (R, θ) indicating a position of the sound source localization signal in the acoustic space; and a reproduction signal generating unit (4) that uses the sound source position is parameters indicating the position of the sound source localization signal to distribute the sound source localization signal to front speakers (5, 6) placed in the standard positions in front and headphones (7, 8) placed near the ears of a listener and in positions different from the standard positions, by combining the sound source localization signal and the sound source non-localization signals.

摘要翻译： 一种声音再现装置，包括：声源定位估计单元（1），当扬声器（FL，FR，SL，SR）再现输入音频信号时，使用声音空间中的输入音频信号来估计声音图像是否被定位 ）放在标准位置; 声源信号分离单元（2），其计算表示本地化并且与输入音频信号分离的声源定位信号的声源定位信号Z（i），声源非定位信号（FLa，FRb，SLa，SLb ）是对声像定位无贡献的信号分量; 声源位置参数计算单元（3），其计算指示声源定位信号在声学空间中的位置的参数（R，＆amp; tt;）; 并且使用声源位置的再现信号生成单元（4）是指示声源定位信号的位置的参数，以将声源定位信号分配到放置在前面的标准位置的前扬声器（5,6）和耳机 （7,8），通过组合声源定位信号和声源非定位信号，放置在收听者的耳朵附近并且与标准位置不同的位置。

公开(公告)号：US09008338B2

公开(公告)日：2015-04-14

申请号：US13504095

申请日：2011-09-30

申请人： Hikaru Usami ,  Naoya Tanaka ,  Toshihiko Date

发明人： Hikaru Usami ,  Naoya Tanaka ,  Toshihiko Date

IPC分类号： H04R25/00 ,  H04S3/00 ,  H04S7/00

CPC分类号： H04S3/002 ,  H04R2205/024 ,  H04S7/302 ,  H04S7/307

摘要： An audio reproduction apparatus is provided which is capable of maintaining the sense of dimensions in an acoustic space even when multi-channel input audio signals are reproduced using speakers having different frequency characteristics. The audio reproduction apparatus includes: a sound source position parameter calculating unit (3) that calculates a localization position of a sound image when reproduced by each of the first and second speaker groups; a reproduction signal generating unit (4) that generates a reproduction signal by separating, from audio signals corresponding to the second speaker group, audio signals representing a sound having a sound pressure level higher when reproduced by the first speaker group than the second speaker group; and a signal correction unit (8) that corrects reproduction signals such that the sound image localized according to the reproduction signals are localized at a substantially identical position to the calculated localization position; and a delay time adjusting unit (9).

摘要翻译： 提供一种即使在使用具有不同频率特性的扬声器再现多声道输入音频信号的情况下也能够保持声学空间中的尺寸感的音频再生装置。 音频再现装置包括：声源位置参数计算单元，其在由第一和第二扬声器组中的每个再现时计算声像的定位位置; 再现信号生成单元，通过从与第二扬声器组相对应的音频信号中分离出代表第一扬声器组再现的声压级高于第二扬声器组的声压级的音频信号，生成再现信号; 以及信号校正单元（8），其校正再现信号，使得根据再现信号定位的声像被定位在与所计算的定位位置基本相同的位置; 和延迟时间调整单元（9）。

公开(公告)号：US20120213391A1

公开(公告)日：2012-08-23

申请号：US13504095

申请日：2011-09-30

申请人： Hikaru Usami ,  Naoya Tanaka ,  Toshihiko Date

发明人： Hikaru Usami ,  Naoya Tanaka ,  Toshihiko Date

IPC分类号： H04R5/02

CPC分类号： H04S3/002 ,  H04R2205/024 ,  H04S7/302 ,  H04S7/307

摘要： An audio reproduction apparatus is provided which is capable of maintaining the sense of dimensions in an acoustic space even when multi-channel input audio signals are reproduced using speakers having different frequency characteristics. The audio reproduction apparatus includes: a sound source position parameter calculating unit (3) that calculates a localization position of a sound image when reproduced by each of the first and second speaker groups; a reproduction signal generating unit (4) that generates a reproduction signal by separating, from audio signals corresponding to the second speaker group, audio signals representing a sound having a sound pressure level higher when reproduced by the first speaker group than the second speaker group; and a signal correction unit (8) that corrects reproduction signals such that the sound image localized according to the reproduction signals are localized at a substantially identical position to the calculated localization position; and a delay time adjusting unit (9).

摘要翻译： 提供一种即使在使用具有不同频率特性的扬声器再现多声道输入音频信号的情况下也能够保持声学空间中的尺寸感的音频再生装置。 音频再现装置包括：声源位置参数计算单元，其在由第一和第二扬声器组中的每个再现时计算声像的定位位置; 再现信号生成单元，通过从与第二扬声器组相对应的音频信号中分离出代表第一扬声器组再现的声压级高于第二扬声器组的声压级的音频信号，生成再现信号; 以及信号校正单元（8），其校正再现信号，使得根据再现信号定位的声像被定位在与所计算的定位位置基本相同的位置; 和延迟时间调整单元（9）。

公开(公告)号：US08433085B2

公开(公告)日：2013-04-30

申请号：US12526828

申请日：2008-12-17

申请人： Ko Mizuno ,  Toshihiko Date

发明人： Ko Mizuno ,  Toshihiko Date

IPC分类号： H04R5/02

CPC分类号： H04N5/602 ,  H04N21/43635 ,  H04N21/439 ,  H04N21/4852 ,  H04S1/00

摘要： An acoustic signal output control section extracts, from an acoustic signal, a low-frequency-component acoustic signal and a high-frequency-component acoustic signal. A sound image localization processing filter section performs a sound image localization process on the low-frequency-component acoustic signal. The low-frequency-component acoustic signal having been subjected to the sound image localization process is outputted from loudspeakers in an AV rack loudspeaker apparatus. A television sound image localization processing filter section performs a sound image localization process on the high-frequency-component acoustic signal. The high-frequency-component acoustic signal having been subjected to the sound image localization process is outputted from loudspeakers in a television via HDMI communication sections.

摘要翻译： 声信号输出控制部分从声信号中提取低频分量声信号和高频分量声信号。 声像定位处理滤波器部分对低频分量声信号进行声像定位处理。 已经经过声像定位处理的低频分量声信号从AV机架扬声器装置的扬声器输出。 电视声像定位处理滤波器部分对高频分量声信号进行声像定位处理。 已经经过声像定位处理的高频分量声信号通过HDMI通信部分从电视机的扬声器输出。

公开(公告)号：US07831413B2

公开(公告)日：2010-11-09

申请号：US11663544

申请日：2005-09-27

申请人： Toshihiko Date ,  Kazue Satoh ,  Hiroyuki Kano

发明人： Toshihiko Date ,  Kazue Satoh ,  Hiroyuki Kano

IPC分类号： H03F1/26

CPC分类号： H04S1/002 ,  G01H17/00 ,  H04S7/30

摘要： A sound field measuring device uses a measurement signal which has at least one change point and whose frequency spectrum has a shape corresponding to a shape of a frequency spectrum of a background noise. This enables a sound field measurement, which is for measuring an impulse response or transfer function of a sound field space which is a linear time-invariant system to be measured, to be performed with a high S/N ratio over a wide frequency band.

摘要翻译： 声场测量装置使用具有至少一个变化点并且其频谱具有与背景噪声的频谱的形状相对应的形状的测量信号。 这使得能够进行用于测量在宽频带上以高S / N比执行的作为待测量的线性时不变系统的声场空间的脉冲响应或传递函数的声场测量。

公开(公告)号：US08014882B2

公开(公告)日：2011-09-06

申请号：US10584088

申请日：2005-03-28

申请人： Takashi Kawamura ,  Haruyo Ohkubo ,  Kazuhiro Kuroyama ,  Masayuki Misaki ,  Meiko Masaki ,  Toshihiko Date

发明人： Takashi Kawamura ,  Haruyo Ohkubo ,  Kazuhiro Kuroyama ,  Masayuki Misaki ,  Meiko Masaki ,  Toshihiko Date

IPC分类号： G06F17/00 ,  H04N5/14 ,  G10L11/06

CPC分类号： G11B27/28 ,  G10L25/78 ,  G11B20/10009 ,  H04H60/58 ,  H04N5/76 ,  H04N21/4394 ,  H04N21/44008

摘要： A particular program detection device detecting a particular program segment even in a program signal contaminated with noise by adaptively modifying a detection sensitivity for a scene change point. A noise level detecting section detects a noise level of a program signal outputted from a signal input section. Based on the detected noise level, a detection sensitivity determining section determines a detection sensitivity which is used when a silent portion of the program signal is determined by a silent portion detecting section. In accordance with the determined detection sensitivity, the silent portion detecting section detects a portion having a low audio level of the program signal as a silent portion. A particular program determining section calculates a time difference between each silent portion and a silent portion following this, and based on the calculated time difference, determines whether or not the silent portion is a particular program.

摘要翻译： 一种特定程序检测装置，即使在通过自适应地修改场景变化点的检测灵敏度的情况下，也可以在被噪声污染的程序信号中检测特定程序段。 噪声电平检测部分检测从信号输入部分输出的节目信号的噪声电平。 基于检测到的噪声电平，检测灵敏度确定部分确定当由无声部分检测部分确定节目信号的无声部分时使用的检测灵敏度。 根据所确定的检测灵敏度，无声部分检测部分将作为静音部分的节目信号的音频电平低的部分检测到。 特定节目确定部分计算每个静音部分和跟随其后的静音部分之间的时间差，并且基于所计算的时间差，确定静音部分是否是特定节目。

公开(公告)号：US06605768B2

公开(公告)日：2003-08-12

申请号：US09998320

申请日：2001-12-03

申请人： Toshihiko Date ,  Ryousuke Kobayashi ,  Michiko Ogawa ,  Tomomi Hirata

发明人： Toshihiko Date ,  Ryousuke Kobayashi ,  Michiko Ogawa ,  Tomomi Hirata

IPC分类号： G10H700

CPC分类号： G10H7/002 ,  G10H2250/105 ,  G10H2250/585

摘要： Upon receipt of a music signal from a music-signal input section, a sound-source separating section in a preprocessing section separates the music signal into a plurality of signals in units of the type of audio source. A physical-property converting section changes a physical property of each of the signals on the basis of control information received from a control-information input section. A signal-synthesizing section synthesizes a plurality of output signals outputted from the physical-property converting section, and supplies the resultant signal to a data-compressing section. For example, in compressed data, a high data rate is allocated to a vocal, whereas low data rates are allocated to other parts. As a result, quality improvement can be implemented in auditory perceptibility of a musically important part.

公开(公告)号：US5325435A

公开(公告)日：1994-06-28

申请号：US896175

申请日：1992-06-10

申请人： Toshihiko Date ,  Shuji Saiki ,  Kazuki Honda

发明人： Toshihiko Date ,  Shuji Saiki ,  Kazuki Honda

IPC分类号： H04S3/00 ,  H04S7/00 ,  H04R5/00

CPC分类号： H04S3/002 ,  H04R2499/13 ,  H04S7/307

摘要： A sound field offset device having two channels, each of which includes a frequency selection filter for dividing a stereophonic input signal into two frequency bands by a given frequency falling within an audio frequency, at least one digital filter for performing sound field offsetting within a lower frequency band, and at least one loudspeaker assembly for a higher frequency band having a sharp directivity pattern and capable of defining an area to which acoustic power is emitted. This device allows a sound field to be offset in a cost effective and simple manner, by improving the frequency characteristic of a sound field space and by clarifying the sense of locality of acoustic images.

摘要翻译： 一种具有两个声道的声场偏移装置，每个声道包括一个频率选择滤波器，用于将立体声输入信号分成两个频带，频率落在一个音频范围内的至少一个数字滤波器，用于在低频 频带，以及至少一个用于具有尖锐方向性图案的较高频带的扬声器组件，并且能够限定发射声功率的区域。 该装置允许通过改善声场空间的频率特性并且通过澄清声像的局部性的感觉来以成本有效和简单的方式来偏移声场。

公开(公告)号：US20090193895A1

公开(公告)日：2009-08-06

申请号：US11663544

申请日：2005-09-27

申请人： Toshihiko Date ,  Kazue Satoh ,  Hiroyuki Kano

发明人： Toshihiko Date ,  Kazue Satoh ,  Hiroyuki Kano

IPC分类号： G01H17/00

CPC分类号： H04S1/002 ,  G01H17/00 ,  H04S7/30

摘要： A sound field measuring device according to the present invention uses a measurement signal which has at least one change point and whose frequency spectrum has a shape corresponding to a shape of a frequency spectrum of a background noise. This enables a sound field measurement, which is for measuring an impulse response or transfer function of a sound field space which is a linear time-invariant system to be measured, to be performed with a high S/N ratio over a wide frequency band.

摘要翻译： 根据本发明的声场测量装置使用具有至少一个变化点并且其频谱具有与背景噪声的频谱的形状相对应的形状的测量信号。 这使得能够进行用于测量在宽频带上以高S / N比执行的作为待测量的线性时不变系统的声场空间的脉冲响应或传递函数的声场测量。