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公开(公告)号：US08156093B2
公开(公告)日：2012-04-10
申请号：US12401522
申请日：2009-03-10
申请人： Sergiy V. Kuryata , Michael J. McLaughlin , Brian J. Smith , Steven J. Pratschner , Ramesha Chandrashekhar
发明人： Sergiy V. Kuryata , Michael J. McLaughlin , Brian J. Smith , Steven J. Pratschner , Ramesha Chandrashekhar
IPC分类号： G06F17/30
CPC分类号： G06F9/45516 , G06F12/0253
摘要： Just in time compiled code and other data within a runtime environment may be shared between multiple applications by identifying common data objects and allowing two or more applications to access the data objects. While at least one application is accessing the objects, the objects may remain in memory. When all applications have stopped accessing an object, the object may be removed from memory. One embodiment may use a server process to manage various operations to facilitate sharing between various applications, such as identifying objects that may be removed from memory and adding newly created data to a database of sharable data.
摘要翻译： 通过识别公共数据对象并允许两个或更多个应用程序访问数据对象，可以在运行时环境中编译代码和其他数据可以在多个应用程序之间共享。 当至少一个应用程序正在访问对象时，对象可能会保留在内存中。 当所有应用程序都停止访问对象时，对象可能会从内存中删除。 一个实施例可以使用服务器进程来管理各种操作以促进各种应用之间的共享，诸如识别可以从存储器移除的对象并将新创建的数据添加到可共享数据的数据库。
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公开(公告)号：US20100235377A1
公开(公告)日：2010-09-16
申请号：US12401522
申请日：2009-03-10
申请人： Sergly V. Kuryata , Michael J. McLaughlin , Brian J. Smith , Steven J. Pratschner , Ramesha Chandrashekhar
发明人： Sergly V. Kuryata , Michael J. McLaughlin , Brian J. Smith , Steven J. Pratschner , Ramesha Chandrashekhar
CPC分类号： G06F9/45516 , G06F12/0253
摘要： Just in time compiled code and other data within a runtime environment may be shared between multiple applications by identifying common data objects and allowing two or more applications to access the data objects. While at least one application is accessing the objects, the objects may remain in memory. When all applications have stopped accessing an object, the object may be removed from memory. One embodiment may use a server process to manage various operations to facilitate sharing between various applications, such as identifying objects that may be removed from memory and adding newly created data to a database of sharable data.
摘要翻译： 通过识别公共数据对象并允许两个或更多个应用程序访问数据对象，可以在运行时环境中编译代码和其他数据可以在多个应用程序之间共享。 当至少一个应用程序正在访问对象时，对象可能会保留在内存中。 当所有应用程序都停止访问对象时，对象可能会从内存中删除。 一个实施例可以使用服务器进程来管理各种操作以促进各种应用之间的共享，诸如识别可以从存储器移除的对象并将新创建的数据添加到可共享数据的数据库。
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公开(公告)号：US4379949A
公开(公告)日：1983-04-12
申请号：US291648
申请日：1981-08-10
摘要： A signal exhibiting redundancy, such as speech subjected to linear predictive coding, is transmitted in a reduced bandwidth by performing a linear interpolation over a number of frames. Interpolated coefficients are tested against quantized values to see if they differ by no more than a threshold. If they do not, only the last frame is sent and intermediate values are reconstructed by interpolation. If the interpolated values differ by more than the threshold from the quantized values, the number of frames for interpolation is reduced and the interpolation is repeated. This is continued until either interpolation is successful or else the next consecutive frame is sent. The required bandwidth for transmission can be varied by varying the threshold, the maximum number of frames for interpolation, the number of LPC coefficients, or a combination of these.
摘要翻译： 通过在多个帧上执行线性插值，以减少的带宽发送呈现冗余的信号，例如经历线性预测编码的语音。 根据量化值测试插值系数，以查看它们是否不同于阈值。 如果不是，则只发送最后一帧，并通过插值重建中间值。 如果内插值与量化值相差超过阈值，则减少用于插值的帧数，并重复插值。 这一直持续到插补成功，否则发送下一个连续的帧。 用于传输的所需带宽可以通过改变阈值，用于插值的最大帧数，LPC系数的数量或它们的组合来改变。
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公开(公告)号：US08538747B2
公开(公告)日：2013-09-17
申请号：US12838913
申请日：2010-07-19
IPC分类号： G10L21/02
CPC分类号： G10L19/09
摘要： A method and apparatus for prediction in a speech-coding system extends a 1st order long-term predictor (LTP) filter, using a sub-sample resolution delay, to a multi-tap LTP filter. From another perspective, a conventional integer-sample resolution multi-tap LTP filter is extended to use sub-sample resolution delay. Such a multi-tap LTP filter offers a number of advantages over the prior-art. Particularly, defining the lag with sub-sample resolution makes it possible to explicitly model the delay values that have a fractional component, within the limits of resolution of the over-sampling factor used by the interpolation filter. The coefficients (βi's) of the multi-tap LTP filter are thus largely freed from modeling the effect of delays that have a fractional component. Consequently their main function is to maximize the prediction gain of the LTP filter via modeling the degree of periodicity that is present and by imposing spectral shaping.
摘要翻译： 用于在语音编码系统中进行预测的方法和装置将使用次样本分辨率延迟的一阶长期预测器（LTP）滤波器扩展到多抽头LTP滤波器。 从另一个角度来说，常规的整数抽样分辨率多抽头LTP滤波器被扩展以使用子样本分辨率延迟。 这种多抽头LTP滤波器具有优于现有技术的许多优点。 特别地，使用子样本分辨率定义滞后使得可以在内插滤波器使用的过采样因子的分辨率的限度内明确地建模具有分数分量的延迟值。 因此，多抽头LTP滤波器的系数（betai's）在很大程度上不会对具有分数分量的延迟的影响进行建模。 因此，它们的主要功能是通过建模存在的周期程度和施加频谱整形来最大化LTP滤波器的预测增益。
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公开(公告)号：US20100286980A1
公开(公告)日：2010-11-11
申请号：US12838913
申请日：2010-07-19
IPC分类号： G10L19/00
CPC分类号： G10L19/09
摘要： A method and apparatus for prediction in a speech-coding system extends a 1st order long-term predictor (LTP) filter, using a sub-sample resolution delay, to a multi-tap LTP filter. From another perspective, a conventional integer-sample resolution multi-tap LTP filter is extended to use sub-sample resolution delay. Such a multi-tap LTP filter offers a number of advantages over the prior-art. Particularly, defining the lag with sub-sample resolution makes it possible to explicitly model the delay values that have a fractional component, within the limits of resolution of the over-sampling factor used by the interpolation filter. The coefficients (βi's) of the multi-tap LTP filter are thus largely freed from modeling the effect of delays that have a fractional component. Consequently their main function is to maximize the prediction gain of the LTP filter via modeling the degree of periodicity that is present and by imposing spectral shaping.
摘要翻译： 用于在语音编码系统中进行预测的方法和装置使用子抽样分辨率延迟将一阶长期预测器（LTP）滤波器扩展到多抽头LTP滤波器。 从另一个角度来说，常规的整数抽样分辨率多抽头LTP滤波器被扩展以使用子样本分辨率延迟。 这种多抽头LTP滤波器具有优于现有技术的许多优点。 特别地，使用子样本分辨率定义滞后使得可以在内插滤波器使用的过采样因子的分辨率的限度内明确地建模具有分数分量的延迟值。 因此，多抽头LTP过滤器的系数（＆bgr; i）在很大程度上不会对具有分数分量的延迟的影响进行建模。 因此，它们的主要功能是通过建模存在的周期程度和施加频谱整形来最大化LTP滤波器的预测增益。
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公开(公告)号：US07170988B2
公开(公告)日：2007-01-30
申请号：US10694571
申请日：2003-10-27
CPC分类号： H04W88/181 , H04Q2213/13034 , H04Q2213/13166
摘要： A method of enhanced tandem communication is provided between at least a first portion of a network suitable for voice communications and a second portion of a network suitable for voice communications. During operation, two representations of an encoded signal are transmitted from the first portion of a network. The two representations comprise the encoded signal produced by a first codec and a parameter translation of the first encoded signal into an encoded signal compatible with a single common compressed voice codec (CCVC) format.
摘要翻译： 在适于语音通信的网络的至少第一部分和适于语音通信的网络的第二部分之间提供增强串联通信的方法。 在操作期间，从网络的第一部分发送编码信号的两个表示。 两个表示包括由第一编解码器产生的编码信号和第一编码信号的参数转换成与单个公共压缩语音编解码器（CCVC）格式兼容的编码信号。
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公开(公告)号：US07792670B2
公开(公告)日：2010-09-07
申请号：US10964861
申请日：2004-10-14
IPC分类号： G10L19/00
CPC分类号： G10L19/09
摘要： A method and apparatus for prediction in a speech-coding system is provided herein. The method of a 1st order long-term predictor (LTP) filter, using a sub-sample resolution delay, is extended to a multi-tap LTP filter, or, viewed from another vantage point, the conventional integer-sample resolution multi-tap LTP filter is extended to use sub-sample resolution delay. This novel formulation of a multi-tap LTP filter offers a number of advantages over the prior-art LTP filter configurations. Particularly, defining the lag with sub-sample resolution makes it possible to explicitly model the delay values that have a fractional component, within the limits of resolution of the over-sampling factor used by the interpolation filter. The coefficients of such a multi-tap LTP filter are thus largely freed from modeling the effect of delays that have a fractional component. Consequently their main function is to maximize the prediction gain of the LTP filter via modeling the degree of periodicity that is present and by imposing spectral shaping.
摘要翻译： 本发明提供了语音编码系统中的预测方法和装置。 使用子样本分辨率延迟的1阶长期预测器（LTP）滤波器的方法被扩展到多抽头LTP滤波器，或者从另一个有利位置观察传统的整数样本分辨率多抽头 LTP过滤器扩展到使用子样本分辨率延迟。 多抽头LTP滤波器的这种新颖配方提供了优于现有技术的LTP滤波器配置的许多优点。 特别地，使用子样本分辨率定义滞后使得可以在内插滤波器使用的过采样因子的分辨率的限度内明确地建模具有分数分量的延迟值。 因此，这种多抽头LTP滤波器的系数在很大程度上不会对具有分数分量的延迟的影响进行建模。 因此，它们的主要功能是通过建模存在的周期程度和施加频谱整形来最大化LTP滤波器的预测增益。
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公开(公告)号：US5687243A
公开(公告)日：1997-11-11
申请号：US536231
申请日：1995-09-29
CPC分类号： H04B14/046
摘要： A signal that includes noise (301) is sampled to provide a plurality of digital information samples (303). A predetermined number of the digital information samples are grouped as a set (305). Noise suppression is performed on the signal using the following steps. One or more digital representations of silence is attached to the set, forming an extended set (401). A Fourier transform is performed on the extended set, yielding a set of frequency domain coefficients (403), at least some of which are scaled (405). An inverse Fourier transform is performed on the set of scaled frequency domain coefficients to provide a set of time domain samples (407), which are partially overlapped in time and added with a previously formed set of time domain samples (409 and 411), which result is provided with the non-overlapping time domain samples as a noise suppressed version of the signal (413).
摘要翻译： 包含噪声（301）的信号被采样以提供多个数字信息采样（303）。 将预定数量的数字信息样本分组为一组（305）。 使用以下步骤对信号执行噪声抑制。 静音的一个或多个数字表示被附加到组，形成扩展集合（401）。 对扩展集执行傅立叶变换，产生一组频域系数（403），其中至少一些被缩放（405）。 对缩放的频域系数集执行逆傅里叶变换，以提供一组时域样本（407），其在时间上部分重叠并且加上先前形成的一组时域样本（409和411），其中 结果提供了不重叠的时域采样作为信号的噪声抑制版本（413）。
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公开(公告)号：US4831624A
公开(公告)日：1989-05-16
申请号：US177300
申请日：1988-04-04
CPC分类号： H04L1/201 , G10L19/005 , G11B20/1833 , H03M13/09 , H03M13/35 , H03M13/43 , H04B1/667 , H04L1/004 , H04L1/0061 , H04L1/0065 , H04L1/007 , H04L1/0071 , H04L1/0072 , H04L2001/0098
摘要： A method and apparatus is disclosed for improving the quality of speech samples communicated via sub-band coding utilizing adaptive bit allocation, by providing error detection only on the adaptive bit allocation information. A first error detection code, such as a cyclic redundancy check (CRC), is calculated on the bit allocation parameters in the transmitter and sent to the receiver, where a second error detection code is calculated based upon the reconstructed bit allocation parameters. The transmitted error detection code is then used to determine if the received bit allocation information is correct, and if not, the frame of speech data is discarded. By protecting only the bit allocation information, additional speech frames may be salvaged from the error-prone channel, thus further increasing speech intelligibility.
摘要翻译： 公开了一种通过仅利用自适应位分配信息提供错误检测来改善通过使用自适应位分配的子带编码传送的语音样本的质量的方法和装置。 针对发送器中的比特分配参数计算出诸如循环冗余校验（CRC）的第一错误检测码，并发送给接收机，其中基于重构的比特分配参数来计算第二错误检测码。 然后，发送的错误检测码用于确定接收到的比特分配信息是否正确，如果不是，则丢弃该语音数据帧。 通过仅保护比特分配信息，可以从容易出错的信道中抢救附加语音帧，从而进一步增加语音可懂度。
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10.发明授权
公开(公告)号：US4549311A
公开(公告)日：1985-10-22
申请号：US714063
申请日：1985-03-20
IPC分类号： H04B7/08
CPC分类号： H04B7/0805 , H04B7/0808
摘要： An improved method and apparatus for measuring the strength of a radio frequency (RF) signal subject to Rayleigh fading is described. The strength of the RF signal is sampled two or more times during a predetermined time interval and the sampled signal strength having the largest magnitude is selected. The selected signal strength is a reasonably accurate measure of the signal strength since the true average strength of a Rayleigh fading signal is close to its peak signal strength. The inventive method and apparatus is particularly well adapted for use in a scanning receiver located in a base station radio of a cellular radiotelephone communications system. The scanning receiver includes an antenna selector for selecting one of a plurality of sector antennas, an RF signal receiver tunable to a plurality of different RF signal frequencies, an analog-to-digital converter for converting RF signal strength samples to a binary data signal, and a microprocessor together with peripheral devices for controlling the operation of the antenna selector, RF signal receiver and analog-to-digital converter.
摘要翻译： 描述了用于测量受瑞利衰落影响的射频（RF）信号的强度的改进的方法和装置。 RF信号的强度在预定时间间隔内被采样两次或更多次，并且选择具有最大幅度的采样信号强度。 所选择的信号强度是信号强度的相当精确的测量，因为瑞利衰落信号的真实平均强度接近其峰值信号强度。 本发明的方法和装置特别适用于位于蜂窝无线电话通信系统的基站无线电装置中的扫描接收机。 扫描接收机包括用于选择多个扇区天线之一的天线选择器，可调谐到多个不同RF信号频率的RF信号接收器，用于将RF信号强度采样转换为二进制数据信号的模数转换器， 以及与外围设备一起的微处理器，用于控制天线选择器，RF信号接收器和模拟 - 数字转换器的操作。
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