公开(公告)号：US20220415337A1

公开(公告)日：2022-12-29

申请号：US17778277

申请日：2020-11-16

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Masanari MIYAMOTO ,  Naoya TANAKA ,  Hiromasa OHASHI

IPC: G10L21/0208 ,  G10L15/20 ,  H04R3/02

Abstract: An acoustic crosstalk suppression device includes a speaker estimation unit configured to estimate a main speaker based on voice signals collected by n units of microphones corresponding to n number of persons (n: an integer equal to or larger than 3); n units of filter update units each of which is configured to update a parameter of a filter configured to generate a suppression signal of a crosstalk component included in a voice signal of the main speaker; and a crosstalk suppression unit configured to suppress the crosstalk component by using a synthesis suppression signal generated by the maximum (n-1) units of filter update units corresponding to reference signals collected by the maximum (n-1) units of microphones.

公开(公告)号：US20200321017A1

公开(公告)日：2020-10-08

申请号：US16841199

申请日：2020-04-06

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Masanari MIYAMOTO ,  Naoya TANAKA ,  Hiromasa OHASHI

IPC: G10L21/0208 ,  G10K11/16

Abstract: An acoustic noise suppressing apparatus outputs a first suppression audio signal in which the acoustic noise is suppressed by subtracting a first pseudo noise signal from the picked up audio signal, the first pseudo noise signal being generated based on a first delay signal and a first filter updated by a first algorithm which is valid when a plurality of talkers are talking, and outputs a second suppression audio signal in which the acoustic noise is suppressed by subtracting a second pseudo noise signal from the picked up audio signal, the second pseudo noise signal being generated based on a second delay signal and a second filter updated by a second algorithm which is valid when one talker is talking. The apparatus outputs a suppressed one of the first suppressed audio signal or the second suppressed audio signal.

公开(公告)号：US20160044435A1

公开(公告)日：2016-02-11

申请号：US14774126

申请日：2014-01-30

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Naoya TANAKA

IPC: H04S7/00 ,  H04R5/02 ,  H04S1/00

CPC classification number: H04S7/30 ,  H04R5/02 ,  H04S1/00

Abstract: An audio reproducing apparatus includes: an obtainment unit configured to obtain a stereo audio signal including an L channel signal and an R channel signal; and a control unit configured to (i) generate a first audio signal for a speaker disposed at an upper position in a listening space and a second audio signal for a speaker disposed at a lower position in the listening space, using the L channel signal and the R channel signal and (ii) determine a gain coefficient corresponding to a degree of correlation between the L channel signal and the R channel signal and multiply by the determined gain coefficient at least one of the first audio signal and the second audio signal, to approximate a ratio between energy of sound reproduced from the first audio signal and energy of sound reproduced from the second audio signal to a predetermined value.

Abstract translation: 音频再现装置包括：获取单元，被配置为获得包括L声道信号和R声道信号的立体声音频信号; 以及控制单元，被配置为（i）使用L声道信号生成用于设置在收听空间中的上位置的扬声器的第一音频信号和用于设置在收听空间中的较低位置处的扬声器的第二音频信号，以及 所述R信道信号和（ii）确定与所述L信道信号和所述R信道信号之间的相关程度相对应的增益系数，并将所确定的所述第一音频信号和所述第二音频信号中的至少一个的增益系数相乘， 近似从第一音频信号再现的声音的能量与从第二音频信号再现的声音的能量之间的比率到预定值。