Echo cancelling device
    44.
    发明授权
    Echo cancelling device 有权
    回波消除装置

    公开(公告)号:US09210502B2

    公开(公告)日:2015-12-08

    申请号:US14361835

    申请日:2012-04-25

    IPC分类号: H04B3/20 H04R3/00 H04M9/08

    CPC分类号: H04R3/002 H04M9/082

    摘要: An echo cancelling device splits a low-band signal through LPFs having characteristics which do not cause aliasing during downsampling of downsamplers, and splits a high-band signal through HPFs having characteristics which do not cause aliasing during downsampling of downsamplers. The echo canceling device generates a mid-band signal by subtracting the low-band signal and the high-band signal from a pre-split signal by adder-subtractors, and cancels an echo on a band-by-band basis.

    摘要翻译: 回波消除装置通过具有在下采样器的下采样期间不引起混叠的特性的LPF分离低频带信号,并且通过具有在下采样器的下采样中不引起混叠的特征的HPF分离高频带信号。 回波消除装置通过减法器从预分割信号中减去低频带信号和高频带信号来产生中频信号,并逐个取消回波。

    Signal processing apparatus
    47.
    发明授权

    公开(公告)号:US08515085B2

    公开(公告)日:2013-08-20

    申请号:US12559843

    申请日:2009-09-15

    IPC分类号: H03G3/20

    摘要: A signal processing apparatus is configured to change volume level or frequency characteristics of an input signal with a limited bandwidth in a first frequency range. The apparatus includes: an information extracting unit configured to extract second frequency characteristic information from a collection signal with a limited bandwidth in a second frequency range different from the first frequency range; a frequency characteristic information extending unit configured to estimate first frequency characteristic information from the second frequency characteristic information extracted by the information extracting unit, the first frequency characteristic information including the first frequency range; and a signal correcting unit configured to change volume level or frequency characteristics of the input signal according to the first frequency characteristic information obtained by the frequency characteristic information extending unit.

    VOLUME CONTROLLER, VOLUME CONTROL METHOD AND ELECTRONIC DEVICE
    48.
    发明申请
    VOLUME CONTROLLER, VOLUME CONTROL METHOD AND ELECTRONIC DEVICE 审中-公开
    体积控制器,体积控制方法和电子设备

    公开(公告)号:US20130136277A1

    公开(公告)日:2013-05-30

    申请号:US13608873

    申请日:2012-09-10

    申请人: Takashi Sudo

    发明人: Takashi Sudo

    IPC分类号: H03G3/20

    CPC分类号: H03G3/3005 H03G3/3089

    摘要: According to at least one embodiment, a volume controller includes an audio processor configured to generate an output signal by variably controlling an amplitude of an input signal; and a volume controller configured to set a sound volume for the variable control based on the input signal.

    摘要翻译: 根据至少一个实施例,音量控制器包括被配置为通过可变地控制输入信号的幅度来产生输出信号的音频处理器; 以及音量控制器,其被配置为基于所述输入信号来设置所述可变控制的音量。

    SIGNAL CORRECTION DEVICE
    49.
    发明申请
    SIGNAL CORRECTION DEVICE 有权
    信号校正装置

    公开(公告)号:US20100056063A1

    公开(公告)日:2010-03-04

    申请号:US12548714

    申请日:2009-08-27

    申请人: Takashi Sudo

    发明人: Takashi Sudo

    IPC分类号: H04B1/00

    CPC分类号: G10L21/0208 G10L25/78

    摘要: A signal correction device including: an orthogonal transform section configured to perform an orthogonal transform for an input signal that includes a speech as a target signal and an unnecessary non-target signal; an interval determining section configured to determine whether each frame of the input signal is an interval in which the non-target signal is dominantly included; a suppressing gain calculating section configured to calculate suppressing gain for suppressing the non-target signal for each first frequency band width for a frame determined to be the interval, and to calculate suppressing gain for suppressing the non-target signal for each second frequency bandwidth for a frame determined not to be the interval; and a signal correcting section configured to perform a signal correcting process for suppressing the non-target signal for a transform coefficient acquired by the orthogonal transform section by using the suppressing gain.

    摘要翻译: 一种信号校正装置,包括:正交变换部,被配置为对包括语音作为目标信号的输入信号和不需要的非目标信号执行正交变换; 间隔确定部分,被配置为确定输入信号的每个帧是否是主要包括非目标信号的间隔; 抑制增益计算部分,被配置为计算用于抑制针对确定为间隔的帧的每个第一频带宽度的非目标信号的抑制增益,并且计算用于抑制每个第二频带宽度的非目标信号的抑制增益, 确定不是间隔的帧; 以及信号校正部,被配置为执行用于通过使用所述抑制增益来抑制由所述正交变换部获取的变换系数的非目标信号的信号校正处理。

    Information Processing Apparatus and Program
    50.
    发明申请
    Information Processing Apparatus and Program 审中-公开
    信息处理装置与程序

    公开(公告)号:US20080247557A1

    公开(公告)日:2008-10-09

    申请号:US12045457

    申请日:2008-03-10

    IPC分类号: H04B3/20

    CPC分类号: H04M9/082

    摘要: According to one embodiment, a signal processing apparatus includes a speaker configured to output the received input signal on which a delay detection signal which has a frequency component of an inaudible frequency on a received input signal is superposed to an acoustic space, an extracting section configured to extract the delay detection signal from the sending input signal outputted from microphone configured to collect sound in the acoustic space a calculating section configured to calculate a delay time between the received input signal and an acoustic echo component contained in the sending input signal, a delay section configured to delay the received input signal by a time corresponding to the delay time and generate a delayed received input signal, and an echo suppression processing section configured to suppress the acoustic echo component contained in the sending input signal by use of the delayed received input signal.

    摘要翻译: 根据一个实施例,一种信号处理装置包括:扬声器,被配置为输出接收到的输入信号,在所述接收输入信号上将具有接收到的输入信号的不可听频率的频率分量的延迟检测信号叠加到声学空间;提取部分配置 从被配置为在声学空间中收集声音的麦克风输出的发送输入信号中提取延迟检测信号,计算部分,被配置为计算接收的输入信号和包含在发送输入信号中的声学回声分量之间的延迟时间,延迟 被配置为将接收的输入信号延迟与延迟时间相对应的时间,并产生延迟的接收输入信号;以及回波抑制处理部,被配置为通过使用延迟的接收输入来抑制包含在发送输入信号中的声学回声分量 信号。