专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明申请

US20100169101A1 METHOD AND APPARATUS FOR GENERATING AN ENHANCEMENT LAYER WITHIN A MULTIPLE-CHANNEL AUDIO CODING SYSTEM 有权
公开(公告)号：US20100169101A1
公开(公告)日：2010-07-01
申请号：US12345165
申请日：2008-12-29
申请人： James P. Ashley , Udar Mittal
发明人： James P. Ashley , Udar Mittal
IPC分类号： G10L19/00
CPC分类号： G10L19/24 , G10L19/008
摘要： During operation a multiple channel audio input signal is received and coded to generate a coded audio signal. A balance factor having balance factor components each associated with an audio signal of the multiple channel audio signal is generated. A gain value to be applied to the coded audio signal to generate an estimate of the multiple channel audio signal based on the balance factor and the multiple channel audio signal is determined, with the gain value configured to minimize a distortion value between the multiple channel audio signal and the estimate of the multiple channel audio signal. The representation of the gain value may be output for transmission and/or storage.

52. 发明申请

US20070027680A1 Method and apparatus for coding an information signal using pitch delay contour adjustment 有权
标题翻译：使用音调延迟轮廓调整对信息信号进行编码的方法和装置
公开(公告)号：US20070027680A1
公开(公告)日：2007-02-01
申请号：US11190680
申请日：2005-07-27
申请人： James Ashley , Udar Mittal
发明人： James Ashley , Udar Mittal
IPC分类号： G10L11/04
CPC分类号： G10L19/09 , G10L21/00 , G10L21/06
摘要： In a speech encoder/decoder a pitch delay contour endpoint modifier is employed to shift the endpoints of a pitch delay interpolation curve up or down. Parficularly, the endpoints of the pitch delay interpolation curve are shifted based on a variation and/or a standard deviation in pitch delay.
摘要翻译：在语音编码器/解码器中，使用音调延迟轮廓端点修改器来向上或向下移动音调延迟内插曲线的端点。特别地，音调延迟插值曲线的端点基于音调延迟的变化和/或标准偏差而移位。

53. 发明授权

US07054807B2 Optimizing encoder for efficiently determining analysis-by-synthesis codebook-related parameters 有权
标题翻译：优化编码器，有效地确定综合码书相关参数
公开(公告)号：US07054807B2
公开(公告)日：2006-05-30
申请号：US10291056
申请日：2002-11-08
申请人： Udar Mittal , James P. Ashley , Edgardo M. Cruz
发明人： Udar Mittal , James P. Ashley , Edgardo M. Cruz
IPC分类号： G10L19/12
CPC分类号： G10L19/12 , G10L2019/0013
摘要： A CELP encoder is provided that optimizes excitation vector-related parameters in a more efficient manner than the encoders of the prior art. In one embodiment, a CELP encoder optimizes excitation vector-related parameters based on a computed correlation matrix, which matrix is in turn based on a filtered first excitation vector. The encoder then evaluates error minimization criteria based on at least in part on a target signal, which target signal is based on an input signal, and the correlation matrix and generates a excitation vector-related index in response to the error minimization criteria. In another embodiment, a CELP encoder is provided that is capable of jointly optimizing and/or sequentially optimizing multiple excitation vector-related parameters by reference to a joint search weighting factor, thereby invoking an optimal error minimization process.
摘要翻译：提供了一种CELP编码器，其以比现有技术的编码器更有效的方式优化激励矢量相关参数。在一个实施例中，CELP编码器基于所计算的相关矩阵来优化与激励矢量相关的参数，所述相关矩阵依次基于滤波的第一激励矢量。然后，编码器至少部分地基于目标信号，基于输入信号的目标信号和相关矩阵来评估误差最小化标准，并且响应于误差最小化标准产生激励矢量相关索引。在另一个实施例中，提供了一种CELP编码器，其能够通过参考联合搜索加权因子来共同优化和/或顺序地优化多个与激励矢量相关的参数，从而调用最佳误差最小化处理。

54. 发明授权

US06983241B2 Method and apparatus for performing harmonic noise weighting in digital speech coders 有权
标题翻译：在数字语音编码器中执行谐波噪声加权的方法和装置
公开(公告)号：US06983241B2
公开(公告)日：2006-01-03
申请号：US10965462
申请日：2004-10-14
申请人： Udar Mittal , James P. Ashley
发明人： Udar Mittal , James P. Ashley
IPC分类号： G10L19/04
CPC分类号： G10L21/0364 , G10L21/0264
摘要： To address the need for choosing values of harmonic noise weighting (HNW) coefficient (εp) so that the amount of harmonic noise weighting can be optimized, a method and apparatus for performing harmonic noise weighting in digital speech coders is provided herein. During operation, received speech is analyzed to determine a pitch period. HNW coefficients are then chosen based on the pitch period, and a perceptual noise weighting filter (C(z)) is determined based on the harmonic-noise weighting (HNW) coefficients (εp).
摘要翻译：为了解决需要选择谐波噪声加权（HNW）系数（epsilon）的值，以便可以优化谐波噪声加权量，在数字语音中执行谐波噪声加权的方法和装置本文提供了编码器。在操作期间，分析接收到的语音以确定音调周期。然后基于音调周期来选择HNW系数，并且基于谐波噪声加权（HNW）系数（ε-p P）来确定感知噪声加权滤波器（C（z））。

55. 发明授权

US09070356B2 Method and apparatus for generating a candidate code-vector to code an informational signal 有权
标题翻译：用于产生候选码矢量以编码信息信号的方法和装置
公开(公告)号：US09070356B2
公开(公告)日：2015-06-30
申请号：US13439121
申请日：2012-04-04
申请人： James P. Ashley , Udar Mittal
发明人： James P. Ashley , Udar Mittal
IPC分类号： G10L19/12 , G10L19/00 , G10L19/083 , G10L19/005
CPC分类号： G10L19/00 , G10L19/005 , G10L19/083 , G10L19/12 , G10L2019/0013
摘要： A method (300) and apparatus (100) generate a candidate code-vector to code an information signal. The method can include producing (310) a target vector from a received input signal. The method can include constructing (320) a plurality of inverse weighting functions based on the target vector. The method can include evaluating (330) an error value associated with each of the plurality of inverse weighting functions to produce a fixed codebook code-vector. The method can include generating (340) a codeword representative of the fixed codebook code-vector, where the codeword can be used by a decoder to generate an approximation of the input signal.
摘要翻译：方法（300）和装置（100）生成候选码矢量以对信息信号进行编码。该方法可以包括从接收到的输入信号产生（310）目标矢量。该方法可以包括基于目标矢量来构建（320）多个反加权函数。该方法可以包括评估（330）与多个逆加权函数中的每一个相关联的误差值，以产生固定码本码矢量。该方法可以包括生成（340）表示固定码本码矢量的码字，其中码字可由解码器用于产生输入信号的近似。

56. 发明授权

US09058812B2 Method and system for coding an information signal using pitch delay contour adjustment 有权
标题翻译：使用音调延迟轮廓调整对信息信号进行编码的方法和系统
公开(公告)号：US09058812B2
公开(公告)日：2015-06-16
申请号：US11190680
申请日：2005-07-27
申请人： James P. Ashley , Udar Mittal
发明人： James P. Ashley , Udar Mittal
IPC分类号： G10L21/06 , G10L21/00 , G10L19/09
CPC分类号： G10L19/09 , G10L21/00 , G10L21/06
摘要： In a speech encoder/decoder a pitch delay contour endpoint modifier is employed to shift the endpoints of a pitch delay interpolation curve up or down. Particularly, the endpoints of the pitch delay interpolation curve are shifted based on a variation and/or a standard deviation in pitch delay.
摘要翻译：在语音编码器/解码器中，使用音调延迟轮廓端点修改器来向上或向下移动音调延迟内插曲线的端点。特别地，音调延迟插值曲线的端点基于音调延迟的变化和/或标准偏差而移位。

57. 发明授权

US08751244B2 Apparatus and method for low complexity combinatorial coding and decoding of signals 有权
标题翻译：用于低复杂度信号组合编码和解码的装置和方法
公开(公告)号：US08751244B2
公开(公告)日：2014-06-10
申请号：US13098501
申请日：2011-05-02
申请人： Udar Mittal , James P. Ashley
发明人： Udar Mittal , James P. Ashley
IPC分类号： G10L19/00
CPC分类号： G10L19/10 , G10L19/038 , H03M7/3082 , H03M7/40
摘要： A method and apparatus for low complexity combinatorial coding and decoding of signals is described herein. During operation, an encoder and a decoder will utilize a first function in determining a codeword or vector when the size of the function is small. The encoder and the decoder will also utilize a second function in determining the codeword or vector when the size of the function is large.
摘要翻译：本文描述了用于信号的低复杂度组合编码和解码的方法和装置。在操作期间，当功能的尺寸小时，编码器和解码器将利用第一功能来确定码字或矢量。当功能的大小较大时，编码器和解码器还将利用第二功能来确定码字或矢量。

58. 发明授权

US08442837B2 Embedded speech and audio coding using a switchable model core 有权
标题翻译：使用可切换模型核心的嵌入式语音和音频编码
公开(公告)号：US08442837B2
公开(公告)日：2013-05-14
申请号：US12650970
申请日：2009-12-31
申请人： James P. Ashley , Jonathan A. Gibbs , Udar Mittal
发明人： James P. Ashley , Jonathan A. Gibbs , Udar Mittal
IPC分类号： G10L19/00 , G10L11/00
CPC分类号： G10L19/24
摘要： A method for processing an audio signal including classifying an input frame as either a speech frame or a generic audio frame, producing an encoded bitstream and a corresponding processed frame based on the input frame, producing an enhancement layer encoded bitstream based on a difference between the input frame and the processed frame, and multiplexing the enhancement layer encoded bitstream, a codeword, and either a speech encoded bitstream or a generic audio encoded bitstream into a combined bitstream based on whether the codeword indicates that the input frame is classified as a speech frame or as a generic audio frame, wherein the encoded bitstream is either a speech encoded bitstream or a generic audio encoded bitstream.
摘要翻译：一种用于处理音频信号的方法，包括将输入帧分类为语音帧或通用音频帧，产生编码比特流和基于输入帧的对应的经处理的帧，根据输入帧的差异产生增强层编码比特流输入帧和经处理的帧，并且基于码字是否指示输入帧被分类为语音帧，将增强层编码比特流，码字以及语音编码比特流或通用音频编码比特流复用到组合比特流中或作为通用音频帧，其中编码比特流是语音编码比特流或通用音频编码比特流。

59. 发明授权

US08428936B2 Decoder for audio signal including generic audio and speech frames 有权
标题翻译：音频信号解码器，包括通用音频和语音帧
公开(公告)号：US08428936B2
公开(公告)日：2013-04-23
申请号：US12844206
申请日：2010-09-09
申请人： Udar Mittal , Jonathan A. Gibbs , James P. Ashley
发明人： Udar Mittal , Jonathan A. Gibbs , James P. Ashley
IPC分类号： G10L19/02
CPC分类号： G10L19/20 , G10L19/0212 , G10L19/12 , G10L19/18
摘要： A method for decoding audio frames includes producing a first frame of coded audio samples, producing at least a portion of a second frame of coded audio samples, generating audio gap filler samples based on parameters representative of a weighted segment of the first frame of coded audio samples or a weighted segment of the portion of the second frame of coded audio samples, and forming a sequence including the audio gap filler samples and the portion of the second frame of coded audio samples.
摘要翻译：用于对音频帧进行解码的方法包括产生编码音频样本的第一帧，产生编码音频样本的第二帧的至少一部分，基于代表编码音频的第一帧的加权段的参数产生音频填充样本样本或编码音频样本的第二帧部分的加权段，并且形成包括音频间隙填充样本和第二帧编码音频样本的部分的序列。

60. 发明授权

US08340976B2 Method and apparatus for generating an enhancement layer within a multiple-channel audio coding system 有权
标题翻译：用于在多声道音频编码系统内生成增强层的方法和装置
公开(公告)号：US08340976B2
公开(公告)日：2012-12-25
申请号：US13439624
申请日：2012-04-04
申请人： James P. Ashley , Udar Mittal
发明人： James P. Ashley , Udar Mittal
IPC分类号： G10L19/00
CPC分类号： G10L19/24 , G10L19/008
摘要： A method and apparatus are disclosed for generating a coded audio signal based on a multiple channel audio input signal. A balance factor having balance factor components each associated with an audio signal of the multiple channel audio signal is generated. A gain value to be applied to the coded audio signal to generate an estimate of the multiple channel audio signal based on the balance factor and the multiple channel audio signal is determined, with the gain value configured to minimize a distortion value between the multiple channel audio signal and the estimate of the multiple channel audio signal.
摘要翻译：公开了一种用于基于多声道音频输入信号产生编码音频信号的方法和装置。产生具有各自与多声道音频信号的音频信号相关联的平衡因子分量的平衡因子。确定要应用于编码音频信号以产生基于平衡因子和多声道音频信号的多声道音频信号的估计的增益值，其中增益值被配置为最小化多声道音频之间的失真值信号和多声道音频信号的估计。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式