Audio signal de-noising utilizing inter-frame correlation to restore missing spectral coefficients
    3.
    发明授权
    Audio signal de-noising utilizing inter-frame correlation to restore missing spectral coefficients 有权
    利用帧间相关来恢复丢失的频谱系数的音频信号去噪

    公开(公告)号:US08965758B2

    公开(公告)日:2015-02-24

    申请号:US13248725

    申请日:2011-09-29

    摘要: In the field of audio encoding/decoding technologies, a signal de-noising method is provided. The method includes: selecting, according to a degree of inter-frame correlation of a frame where a spectral coefficient to be adjusted resides, at least two spectral coefficients having high correlation with the spectral coefficient to be adjusted; performing weighting on the at least two selected spectral coefficients and the spectral coefficient to be adjusted to acquire a predicted value of the spectral coefficient to be adjusted; and adjusting a spectrum of a decoded signal by using the acquired predicted value, and outputting the adjusted decoded signal. A signal de-noising apparatus corresponding to the signal de-noising method and an audio decoding system using the signal de-noising apparatus are also provided.

    摘要翻译: 在音频编码/解码技术领域,提供了信号去噪方法。 该方法包括:根据要调整的频谱系数的帧的帧间相关度,选择与要调整的频谱系数高度相关的至少两个频谱系数; 对所述至少两个所选频谱系数执行加权,以及对所述频谱系数进行调整,以获取要调整的频谱系数的预测值; 以及通过使用获取的预测值来调整解码信号的频谱,并输出调整后的解码信号。 还提供了与信号去噪方法相对应的信号去噪装置和使用信号去噪装置的音频解码系统。

    Method, device and system for enhancement layer signal encoding and decoding
    4.
    发明授权
    Method, device and system for enhancement layer signal encoding and decoding 有权
    用于增强层信号编码和解码的方法,装置和系统

    公开(公告)号:US08380526B2

    公开(公告)日:2013-02-19

    申请号:US13111834

    申请日:2011-05-19

    IPC分类号: G10L19/00 G10L19/12

    CPC分类号: G10L21/00 G10L19/24

    摘要: A method, device and system for signal encoding and decoding are disclosed. The method includes: encoding a core layer signal to obtain a core layer signal code; selecting an enhancement sample point that requires enhancement layer signal encoding according to the core layer signal code and the number of bits that can be used by an enhancement layer; obtaining an enhancement layer signal code of the enhancement sample point; and outputting a bit stream, where the bit stream includes the core layer signal code and the enhancement layer signal code. In embodiments of the present invention, according to the number of bits that can be used by the enhancement layer, the enhancement sample point that requires enhancement layer signal encoding is selected; the enhancement layer signal of the selected enhancement sample point is encoded and decoded; when no sufficient bits are available for the enhancement layer, the enhancement quality of the core layer can be improved.

    摘要翻译: 公开了用于信号编码和解码的方法,装置和系统。 该方法包括:编码核心层信号以获得核心层信号码; 选择需要根据核心层信号码的增强层信号编码和增强层可以使用的位数的增强采样点; 获得增强采样点的增强层信号码; 并输出比特流,其中比特流包括核心层信号码和增强层信号码。 在本发明的实施例中,根据增强层可以使用的比特数,选择需要增强层信号编码的增强采样点; 所选择的增强采样点的增强层信号被编码和解码; 当没有足够的比特可用于增强层时,可以提高核心层的增强质量。

    Method and apparatus for switching speech or audio signals
    5.
    发明授权
    Method and apparatus for switching speech or audio signals 有权
    用于切换语音或音频信号的方法和装置

    公开(公告)号:US08214218B2

    公开(公告)日:2012-07-03

    申请号:US13162309

    申请日:2011-06-16

    IPC分类号: G10L19/00

    CPC分类号: G10L19/24 G10L19/22 G10L19/26

    摘要: A method and an apparatus for switching speech or audio signals, wherein the method for switching speech or audio signals includes when switching of a speech or audio, weighting a first high frequency band signal of a current frame of speech or audio signal and a second high frequency band signal of the previous M frame of speech or audio signals to obtain a processed first high frequency band signal, where M is greater than or equal to 1, and synthesizing the processed first high frequency band signal and a first low frequency band signal of the current frame of speech or audio signal into a wide frequency band signal. In this way, speech or audio signals with different bandwidths can be smoothly switched, thus improving the quality of audio signals received by a user.

    摘要翻译: 一种用于切换语音或音频信号的方法和装置,其中用于切换语音或音频信号的方法包括:当切换语音或音频时,加权当前语音或音频信号帧的第一高频带信号, 先前的M帧语音或音频信号的频带信号,以获得经处理的第一高频带信号,其中M大于或等于1,并且合成经处理的第一高频带信号和第一低频带信号 将当前的语音帧或音频信号转换成宽频带信号。 以这种方式,可以平滑地切换具有不同带宽的语音或音频信号,从而提高用户接收的音频信号的质量。

    Photonic technique for generating arbitrary waveforms
    7.
    发明授权
    Photonic technique for generating arbitrary waveforms 有权
    用于产生任意波形的光子技术

    公开(公告)号:US08164819B2

    公开(公告)日:2012-04-24

    申请号:US12776570

    申请日:2010-05-10

    IPC分类号: G02F1/01

    摘要: In a radio frequency (RF)-photonic arbitrary waveform generator (AWG), an optical carrier signal is phase-modulated using an arbitrary waveform optical phase generator (AWPOG), which may include, e.g., sequential optical phase modulators. The phase-modulated optical signal is combined with a version of the optical carrier signal to yield an optical waveform, whose amplitude varies with a phase shift introduced by the AWPOG to the optical carrier signal. By manipulating electrical inputs to the AWPOG which control the phase shift, the optical waveform can be arbitrary shaped. The optical waveform may then be converted to an electrical waveform having a radio frequency.

    摘要翻译: 在射频(RF) - 光子任意波形发生器(AWG)中,使用任意波形光学相位发生器(AWPOG)对光载波信号进行相位调制,其可以包括例如顺序光相位调制器。 相位调制的光信号与光载波信号的形式组合以产生光波形,其波幅随AWPOG向光载波信号引入的相移而变化。 通过操纵控制相移的AWPOG的电输入,光波形可以是任意形状。 然后可以将光学波形转换成具有射频的电波形。

    Heat dissipation device of vehicle lamp and interposing element thereof
    8.
    发明授权
    Heat dissipation device of vehicle lamp and interposing element thereof 有权
    车灯的散热装置及其插入元件

    公开(公告)号:US08147109B2

    公开(公告)日:2012-04-03

    申请号:US12623662

    申请日:2009-11-23

    IPC分类号: B60Q1/00

    摘要: A heat dissipation device of a vehicle lamp and an interposing element thereof are provided. The heat dissipation device is installed in a lamp room which is divided by the interposing element into a front partition and a rear partition. A heat sink is installed in the interposing elements. An air feeding fan is disposed in an air feeding channel of the interposing element, for drawing air in the front partition to the rear partition through the air feeding channel. Further, a back flow fan is disposed in the rear partition, for drawing air in the rear partition to the front partition through a back flow channel. Whereby, the air in the front partition is cooled down through an external air flow passing through the lamp cover. Then, the heat sink dissipates heat of the air flow with the relatively low temperature in the front partition to the rear partition.

    摘要翻译: 提供车灯的散热装置及其插入元件。 散热装置安装在由插入元件分隔成前隔板和后隔板的灯室内。 散热元件安装在散热片上。 空气供给风扇设置在中介元件的空气供给通道中,用于通过供气通道将前隔板中的空气吸入后隔板。 另外,背面风扇设置在后部隔板中,用于通过后部流动通道将后部隔板中的空气吸入前部隔板。 因此,前隔板中的空气通过穿过灯罩的外部空气流冷却。 然后,散热器将前隔板中相对较低的温度的空气流的热量散发到后隔板。

    Method, device and system for signal encoding and decoding
    9.
    发明授权
    Method, device and system for signal encoding and decoding 有权
    用于信号编码和解码的方法,装置和系统

    公开(公告)号:US08140343B2

    公开(公告)日:2012-03-20

    申请号:US13210127

    申请日:2011-08-15

    IPC分类号: G10L19/00 G10L21/04

    CPC分类号: G10L21/00 G10L19/24

    摘要: A method, device and system for signal encoding and decoding, the method comprising: encoding a core layer signal to obtain a core layer signal code; selecting an enhancement sample point that requires enhancement layer signal encoding according to the core layer signal code and the number of bits that can be used by an enhancement layer; obtaining an enhancement layer signal code of the enhancement sample point; and outputting a bit stream, where the bit stream includes the core layer signal code and the enhancement layer signal code. In embodiments of the present invention, according to the number of bits that can be used by the enhancement layer, the enhancement sample point that requires enhancement layer signal encoding is selected; the enhancement layer signal of the selected enhancement sample point is encoded and decoded; when no sufficient bits are available for the enhancement layer, the enhancement quality of the core layer can be improved.

    摘要翻译: 一种用于信号编码和解码的方法,装置和系统,所述方法包括:对核心层信号进行编码以获得核心层信号码; 选择需要根据核心层信号码的增强层信号编码和增强层可以使用的位数的增强采样点; 获得增强采样点的增强层信号码; 并输出比特流,其中比特流包括核心层信号码和增强层信号码。 在本发明的实施例中,根据增强层可以使用的比特数,选择需要增强层信号编码的增强采样点; 所选择的增强采样点的增强层信号被编码和解码; 当没有足够的比特可用于增强层时,可以提高核心层的增强质量。

    SIGNAL DELAY DETECTION METHOD, DETECTION APPARATUS, CODER
    10.
    发明申请
    SIGNAL DELAY DETECTION METHOD, DETECTION APPARATUS, CODER 审中-公开
    信号延迟检测方法,检测装置,编码器

    公开(公告)号:US20120053714A1

    公开(公告)日:2012-03-01

    申请号:US13290809

    申请日:2011-11-07

    IPC分类号: G06F17/00

    CPC分类号: H04S1/007 H04S2420/03

    摘要: A signal delay detection method, a detection apparatus, and a coder are disclosed to improve accuracy of detecting the signal delay. The method includes: obtaining a first cumulative cross-correlation function according to cross-correlation functions between channel signals; determining a first delay between the channel signals corresponding to the first cumulative cross-correlation function; adjusting a second cumulative cross-correlation function according to a relationship between the first delay and a second delay that exist between the channel signals, where the second delay is obtained at time of adjusting the second cumulative cross-correlation function and an initial value of the second delay is determined according to an initial value of a second weighting coefficient of the second cumulative cross-correlation function; and determining the second delay corresponding to the adjusted second cumulative cross-correlation function as a delay detected between the channel signals.

    摘要翻译: 公开了一种信号延迟检测方法,检测装置和编码器,以提高检测信号延迟的精度。 该方法包括:根据信道信号之间的互相关函数获得第一累积互相关函数; 确定对应于第一累积互相关函数的信道信号之间的第一延迟; 根据存在于通道信号之间的第一延迟和第二延迟之间的关系来调整第二累积互相关函数,其中在调整第二累积互相关函数时获得第二延迟和第二累积互相关函数的初始值 根据第二累积互相关函数的第二加权系数的初始值来确定第二延迟; 以及确定与所调整的第二累积互相关函数相对应的第二延迟作为在所述信道信号之间检测到的延迟。