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1. 发明申请

WO2012051012A1 AUDIO SIGNAL BANDWIDTH EXTENSION IN CELP-BASED SPEECH CODER 审中-公开
标题翻译：基于CELP的语音编码器中的音频信号带宽扩展
公开(公告)号：WO2012051012A1
公开(公告)日：2012-04-19
申请号：PCT/US2011/054862
申请日：2011-10-05
申请人： MOTOROLA MOBILITY, INC. , GIBBS, Jonathan, A. , ASHLEY, James, P. , MITTAL, Udar
发明人： GIBBS, Jonathan, A. , ASHLEY, James, P. , MITTAL, Udar
IPC分类号： G10L21/02
CPC分类号： G10L21/038
摘要： A method for decoding an audio signal having a bandwidth that extends beyond a bandwidth of a CELP excitation signal in an audio decoder including a CELP-based decoder element. The method includes obtaining a second excitation signal having an audio bandwidth extending beyond the audio bandwidth of the CELP excitation signal, obtaining a set of signals by filtering the second excitation signal with a set of bandpass filters, scaling the set of signals using a set of energy-based parameters, and obtaining a composite output signal by combining the scaled set of signals with a signal based on the audio signal decoded by the CELP-based decoder element.
摘要翻译：一种用于对包括基于CELP的解码器元件的音频解码器中具有超出CELP激励信号的带宽的带宽的音频信号进行解码的方法。该方法包括获得具有超出CELP激励信号的音频带宽的音频带宽的第二激励信号，通过用一组带通滤波器对第二激励信号进行滤波来获得一组信号，使用一组基于能量的参数，并且通过将缩放的信号组合与基于由基于CELP的解码器元素解码的音频信号的信号组合来获得复合输出信号。

2. 发明申请

WO2011109374A1 DECODER FOR AUDIO SIGNAL INCLUDING GENERIC AUDIO AND SPEECH FRAMES 审中-公开
标题翻译：用于音频信号的解码器，包括一般音频和语音框架
公开(公告)号：WO2011109374A1
公开(公告)日：2011-09-09
申请号：PCT/US2011/026660
申请日：2011-03-01
申请人： MOTOROLA MOBILITY, INC. , MITTAL, Udar, , GIBBS, Jonathan, A. , ASHLEY, James, P.
发明人： MITTAL, Udar, , GIBBS, Jonathan, A. , ASHLEY, James, P.
IPC分类号： G10L19/14
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第二帧编码音频样本的部分的加权段，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。

3. 发明申请

WO2011081751A1 EMBEDDED SPEECH AND AUDIO CODING USING A SWITCHABLE MODEL CORE 审中-公开
标题翻译：嵌入式语音和音频编码使用可切换的模型核心
公开(公告)号：WO2011081751A1
公开(公告)日：2011-07-07
申请号：PCT/US2010/058193
申请日：2010-11-29
申请人： MOTOROLA MOBILITY, INC. , ASHLEY, James, P. , GIBBS, Jonathan, A. , MITTAL, Udar
发明人： ASHLEY, James, P. , GIBBS, Jonathan, A. , MITTAL, Udar
IPC分类号： G10L19/14
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，基于输入帧产生编码比特流和对应的经处理的帧，产生增强层编码的比特流，基于输入帧和经处理的帧，并且基于码字是否将输入帧分类为语音帧，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。

4. 发明申请

WO2012051013A1 AUDIO SIGNAL BANDWIDTH EXTENSION IN CELP-BASED SPEECH CODER 审中-公开
标题翻译：基于CELP的语音编码器中的音频信号带宽扩展
公开(公告)号：WO2012051013A1
公开(公告)日：2012-04-19
申请号：PCT/US2011/054864
申请日：2011-10-05
申请人： MOTOROLA MOBILITY, INC. , GIBBS, Jonathan, A. , ASHLEY, James, P. , MITTAL, Udar
发明人： GIBBS, Jonathan, A. , ASHLEY, James, P. , MITTAL, Udar
IPC分类号： G10L21/02
CPC分类号： G10L21/038
摘要： A method for decoding an audio signal in a decoder having a CELP-based decoder element including a fixed codebook component, at least one pitch period value, and a first decoder output, wherein a bandwidth of the audio signal extends beyond a bandwidth of the CELP-based decoder element. The method includes obtaining an up-sampled fixed codebook signal by up-sampling the fixed codebook component to a higher sample rate, obtaining an up-sampled excitation signal based on the up-sampled fixed codebook signal and an up-sampled pitch period value, and obtaining a composite output signal based on the up-sampled excitation signal and an output signal of the CELP-based decoder element, wherein the composite output signal includes a bandwidth portion that extends beyond a bandwidth of the CELP-based decoder element.
摘要翻译：一种在具有基于CELP的解码器元件的解码器中对音频信号进行解码的方法，该解码器元件包括固定码本分量，至少一个音调周期值和第一解码器输出，其中音频信号的带宽延伸超过CELP的带宽的解码器元件。该方法包括：通过将固定码本分量进行上采样获得较高采样率的上采样固定码本信号，基于上采样固定码本信号和上采样音调周期值获得上采样激励信号，以及基于上采样的激励信号和基于CELP的解码器元件的输出信号获得复合输出信号，其中复合输出信号包括延伸超过基于CELP的解码器元件的带宽的带宽部分。

5. 发明申请

WO2010059342A1 APPARATUS AND METHOD FOR ENCODING AT LEAST ONE PARAMETER ASSOCIATED WITH A SIGNAL SOURCE 审中-公开
标题翻译：用于编码与信号源相关的至少一个参数的装置和方法
公开(公告)号：WO2010059342A1
公开(公告)日：2010-05-27
申请号：PCT/US2009/062008
申请日：2009-10-26
申请人： MOTOROLA, INC. , GIBBS, Jonathan, A. , ASHLEY, James, P. , FRANCOIS, Holly, L. , MITTAL, Udar
发明人： GIBBS, Jonathan, A. , ASHLEY, James, P. , FRANCOIS, Holly, L. , MITTAL, Udar
IPC分类号： G10L19/14
CPC分类号： G10L19/167
摘要： Apparatus for encoding at least one parameter associated with a signal source for transmission over k frames to a decoder comprises a processor which is configured in operation to assign a predetermined bit pattern to n bits associated with the at least one parameter of a first frame of k frames and set the n bits associated with the at least one parameter of each of k-1 subsequent frames to values, such that the values of the n bits of the k-1 subsequent frames represent the at least one parameter. The predetermined bit pattern indicates a start of the at least one parameter.
摘要翻译：用于编码与信号源相关联的至少一个参数以用于在k个帧上传输到解码器的装置包括处理器，其被配置用于将预定位模式分配给与k的第一帧的至少一个参数相关联的n位并且将与k-1个后续帧中的每一个的至少一个参数相关联的n位设置为值，使得k-1个后续帧的n位的值表示至少一个参数。预定位模式指示至少一个参数的开始。

6. 发明申请

WO2009126759A1 METHOD AND APPARATUS FOR SELECTIVE SIGNAL CODING BASED ON CORE ENCODER PERFORMANCE 审中-公开
标题翻译：基于核心编码器性能的选择性信号编码方法与装置
公开(公告)号：WO2009126759A1
公开(公告)日：2009-10-15
申请号：PCT/US2009/039984
申请日：2009-04-09
申请人： MOTOROLA, INC. , ASHLEY, James, P. , GIBBS, Jonathan, A. , MITTAL, Udar
发明人： ASHLEY, James, P. , GIBBS, Jonathan, A. , MITTAL, Udar
IPC分类号： G10L19/04
CPC分类号： G10L19/24 , G10L19/22
摘要： In a selective signal encoder, an input signal is first encoded (1004) using a core layer encoder to produce a core layer encoded signal. The core layer encoded signal is decoded (1006) to produce a reconstructed signal and an error signal is generated (1008) as the difference between the reconstructed signal and the input signal. The reconstructed signal is compared (1010) to the input signal. One of two or more enhancement layer encoders selected (1014, 1016) dependent upon the comparison and used to encode the error signal. The core layer encoded signal, the enhancement layer encoded signal and the selection indicator are output (1018) to the channel (for transmission or storage, for example).
摘要翻译：在选择信号编码器中，首先使用核心层编码器对输入信号进行编码（1004）以产生核心层编码信号。核心层编码信号被解码（1006）以产生重构信号，并且产生（1008）误差信号作为重构信号和输入信号之间的差。将重建信号与输入信号进行比较（1010）。所选择的两个或更多个增强层编码器中的一个（1014,1016）取决于比较并用于对误差信号进行编码。将核心层编码信号，增强层编码信号和选择指示符输出（1018）到信道（例如用于传输或存储）。

7. 发明申请

WO2011082047A4 HYBRID ARITHMETIC-COMBINATORIAL ENCODER 审中-公开
公开(公告)号：WO2011082047A4
公开(公告)日：2011-07-07
申请号：PCT/US2010/061714
申请日：2010-12-22
申请人： MOTOROLA MOBILITY, INC. , MITTAL, Udar , ASHLEY, James, P. , RAMABADRAN, Tenkasi, V.
发明人： MITTAL, Udar , ASHLEY, James, P. , RAMABADRAN, Tenkasi, V.
IPC分类号： H03M7/30 , H03M7/40
摘要： Hybrid range coding /combinatorial coding (FPC) encoders and decoders are provided. Encoding and decoding can be dynamically switched between range coding and combinatorial according to the ratio of ones to the ratio of bits in a partial remaining sequence in order to reduce the computational complexity of encoding and decoding.

8. 发明申请

WO2007018815A2 METHOD AND APPARATUS FOR CODING AN INFORMATION SIGNAL USING PITCH DELAY CONTOUR ADJUSTMENT 审中-公开
标题翻译：用于使用倾斜延迟调整来编码信息信号的方法和装置
公开(公告)号：WO2007018815A2
公开(公告)日：2007-02-15
申请号：PCT/US2006/025273
申请日：2006-06-29
申请人： MOTOROLA, INC. , ASHLEY, James, P. , MITTAL, Udar
发明人： ASHLEY, James, P. , MITTAL, Udar
IPC分类号： G10L11/04
CPC分类号： G10L19/09 , G10L21/00 , G10L21/06
摘要： In a speech encoder/decoder (200/300) a pitch delay contour endpoint modifier (208) 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（200/300）中，使用音调延迟轮廓端点修改器（208）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。

9. 发明申请

WO2005045808A1 HARMONIC NOISE WEIGHTING IN DIGITAL SPEECH CODERS 审中-公开
标题翻译：数字语音编码器中的和声噪声称重
公开(公告)号：WO2005045808A1
公开(公告)日：2005-05-19
申请号：PCT/US2004/035757
申请日：2004-10-26
申请人： MOTOROLA, INC., A CORPORATION OF THE STATE OF DELAWARE , MITTAL, Udar , ASHLEY, James, P.
发明人： MITTAL, Udar , ASHLEY, James, P.
IPC分类号： G10L19/00
CPC分类号： G10L21/0364 , G10L21/0264
摘要： To address the need for choosing values of harmonic noise weighting (HNW) coefficient (ε p ) so that the amount of harmonic noise weighting can be optimizex, a method and apparatus for performing harmonic noise weighting in digital spech coders is provided herein. During operation, received speech is analyzed (503) to determine a pitch period. HNW coefficients are then chosen (505) based on the pitch period, and a perceptual noise weighting filter ( C(z) ) is determined (507) based on the harmonic-noise weighting (HNW) coefficients (ε p ).
摘要翻译：为了解决需要选择谐波噪声加权（HNW）系数（εp）的值，使得谐波噪声加权量可以是优化的，本文提供了一种用于在数字频率编码器中执行谐波噪声加权的方法和装置。在操作期间，分析接收的语音（503）以确定音调周期。然后基于音调周期选择（505）HNW系数，并且基于谐波噪声加权（HNW）系数（εp）确定感知噪声加权滤波器（C（z））（507）。

10. 发明申请

WO2010077557A1 SELECTIVE SCALING MASK COMPUTATION BASED ON PEAK DETECTION 审中-公开
标题翻译：基于峰值检测的选择性缩放掩码计算
公开(公告)号：WO2010077557A1
公开(公告)日：2010-07-08
申请号：PCT/US2009/066627
申请日：2009-12-03
申请人： MOTOROLA, INC. , ASHLEY, James, P. , MITTAL, Udar
发明人： ASHLEY, James, P. , MITTAL, Udar
IPC分类号： G10L19/14
CPC分类号： G10L19/24
摘要： A set of peaks in a reconstructed audio vector Ŝ of a received audio signal is detected and a scaling mask Ψ (Ŝ) based on the detected set of peaks is generated. A gain vector g* is generated based on at least the scaling mask and an index j representative of the gain vector. The reconstructed audio signal is scaled with the gain vector to produce a scaled reconstructed audio signal. A distortion is generated based on the audio signal and the scaled reconstructed audio signal. The index of the gain vector based on the generated distortion is output.
摘要翻译：检测接收到的音频信号的重构音频向量S中的一组峰值，并且生成基于检测到的峰值集合的缩放掩模λ（S）。基于至少缩放掩码和表示增益矢量的索引j生成增益向量g *。重建音频信号用增益矢量进行缩放以产生缩放的重构音频信号。基于音频信号和缩放的重构音频信号产生失真。输出基于生成的失真的增益矢量的索引。

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