Signal processing method and apparatus
    71.
    发明申请
    Signal processing method and apparatus 有权
    信号处理方法及装置

    公开(公告)号:US20080059162A1

    公开(公告)日:2008-03-06

    申请号:US11637809

    申请日:2006-12-13

    IPC分类号: G10L21/02

    CPC分类号: G10L21/0208

    摘要: In a signal processing method and apparatus, a predetermined correcting signal having a same frame length as a second frame signal in which predetermined processing is performed to a frequency spectrum of a first frame signal of a frame length to which a predetermined window function is performed and is converted into a time domain is adjusted so that amplitudes of both ends of the correcting signal become equal to amplitudes of both or one of frame ends of the second frame signal, and a corrected frame signal is obtained by subtracting an adjusted correcting signal from the second frame signal.

    摘要翻译: 在信号处理方法和装置中,具有与执行预定处理的第二帧信号相同的帧长的预定校正信号对于执行预定窗口功能的帧长度的第一帧信号的频谱,以及 被转换成时域,使得校正信号的两端的振幅变得等于第二帧信号的两帧或者一帧的幅度,并且通过从第二帧信号中减去调整的校正信号获得校正的帧信号 第二帧信号。

    Jitter buffer controller
    72.
    发明申请
    Jitter buffer controller 有权
    抖动缓冲控制器

    公开(公告)号:US20070223467A1

    公开(公告)日:2007-09-27

    申请号:US11486827

    申请日:2006-07-14

    IPC分类号: H04L12/50

    摘要: It is an object of this invention to improve speech quality in voice communications. Provided is a jitter buffer controller for controlling a jitter buffer in which arrived packets are accumulated, including: a jitter measuring portion for measuring jitters in the arrived packets; a judging portion for judging whether or not the jitters of the packets can be absorbed with an accumulation capacity of the jitter buffer; a determining portion for determining levels of importance of the packets; and a control portion for performing reproduction processing or discarding processing on a packet, among the packets accumulated in the jitter buffer, having jitter that cannot be absorbed with the accumulation capacity of the buffer, depending on a level of importance of the packet.

    摘要翻译: 本发明的目的是提高语音通信中的语音质量。 提供了一种用于控制累积到达分组的抖动缓冲器的抖动缓冲器控制器,包括:用于测量到达分组中的抖动的抖动测量部分; 用于判断所述分组的抖动能否被所述抖动缓冲器的累积容量吸收的判断部分; 用于确定分组的重要性的级别的确定部分; 以及控制部分,用于根据分组的重要性水平,在积累在抖动缓冲器中的分组之间执行对不能被缓冲器的累积容量吸收的抖动的分组的再现处理或废弃处理。

    Noise detection apparatus, noise removal apparatus, and noise detection method
    75.
    发明授权
    Noise detection apparatus, noise removal apparatus, and noise detection method 有权
    噪声检测装置,噪声去除装置和噪声检测方法

    公开(公告)号:US08463607B2

    公开(公告)日:2013-06-11

    申请号:US12625639

    申请日:2009-11-25

    IPC分类号: G10L21/02

    摘要: A noise detection apparatus includes a time-frequency transform unit configured to transform an input signal from a time domain to a frequency domain to produce a spectrum, a power spectrum calculating unit configured to obtain powers of frequencies from the spectrum, a peak stationarity detecting unit configured to use peaks of the powers of frequencies in each frame to detect frequencies at which a stationary peak of the powers exists, a power stationarity detecting unit configured to use magnitudes of the powers of frequencies in each frame to detect frequencies at which the magnitudes of the powers are stationary, and a check unit configured to use the frequencies detected by the peak stationarity detecting unit and the frequencies detected by the power stationarity detecting unit to check whether there is a noise that has at least one of peak stationarity and power stationarity in the frequency domain.

    摘要翻译: 噪声检测装置包括:时间 - 频率变换单元,被配置为将来自时域的输入信号变换为频域以产生频谱;功率谱计算单元,被配置为从频谱获得频率的功率;峰值平稳性检测单元 被配置为使用每个帧中的频率功率的峰值来检测存在功率的稳定峰值的频率;配置为使用每帧中的频率功率的大小来检测频率的频率的功率平稳检测单元, 功率是稳定的,并且检查单元被配置为使用由峰值平稳性检测单元检测的频率和由平均电平检测单元检测的频率来检查是否存在具有峰均衡和功率平稳性中的至少一个的噪声 频域。

    Echo canceller
    76.
    发明授权
    Echo canceller 有权
    回音消除器

    公开(公告)号:US08170199B2

    公开(公告)日:2012-05-01

    申请号:US11840338

    申请日:2007-08-17

    CPC分类号: H04M9/082 H04R3/02

    摘要: In a speech communication device capable of bidirectional communication, a clock deviation between the speaker side (the receiving side) and the microphone side (the transmitting side) is detected, and based on the above deviation, either a first frequency signal (speaker signal (reference signal)) or a second frequency signal (microphone signal) is frequency-shifted in the frequency domain, and therefore, an influence caused by the clock deviation can simply be corrected without an increased processing amount, and thus, an echo can be suppressed effectively.

    摘要翻译: 在能够进行双向通信的语音通信装置中,检测扬声器侧(接收侧)和麦克风侧(发送侧)之间的时钟偏差,并且基于上述偏差,将第一频率信号(扬声器信号 参考信号))或第二频率信号(麦克风信号)在频域中被频移,因此,可以简单地校正由时钟偏差引起的影响而不增加处理量,从而可以抑制回波 有效。

    Fluctuation absorbing buffer apparatus and packet voice communication apparatus
    80.
    发明申请
    Fluctuation absorbing buffer apparatus and packet voice communication apparatus 审中-公开
    波动吸收缓冲装置和分组语音通信装置

    公开(公告)号:US20070201498A1

    公开(公告)日:2007-08-30

    申请号:US11411991

    申请日:2006-04-26

    摘要: A fluctuation absorbing buffer apparatus configured to absorb, by means of a reproduction buffer, a transmission delay time fluctuation occurring in a voice packet communication system, includes: a packet state notifying part carrying out decrease notification when the number of voice packets stored in the reproduction buffer decrease; a voice determining part carrying out determination as to whether or not voice exists on the voice packets stored in the reproduction buffer; and voice reproduction control part repeatedly reproducing voice packets determined as not having voice when decrease is notified by said packet state notifying part.

    摘要翻译: 一种波动吸收缓冲装置,被配置为通过再现缓冲器吸收在语音分组通信系统中发生的传输延迟时间波动,包括​​:当存储在再现中的语音分组的数量时,分组状态通知部分执行减少通知 缓冲减少; 声音确定部分执行对存储在再现缓冲器中的语音分组是否存在语音的确定; 语音再现控制部分,当通过所述分组状态通知部分通知减少时,重复地再现被确定为没有语音的语音分组。