公开(公告)号：US09037456B2

公开(公告)日：2015-05-19

申请号：US13190517

申请日：2011-07-26

申请人： Udar Mittal ,  James P. Ashley ,  Jonathan A. Gibbs

发明人： Udar Mittal ,  James P. Ashley ,  Jonathan A. Gibbs

IPC分类号： G10L19/18 ,  G10L19/20

CPC分类号： G10L19/20

摘要： An encoder and decoder for processing an audio signal including generic audio and speech frames are provided herein. During operation, two encoders are utilized by the speech coder, and two decoders are utilized by the speech decoder. The two encoders and decoders are utilized to process speech and non-speech (generic audio) respectively. During a transition between generic audio and speech, parameters that are needed by the speech decoder for decoding frame of speech are generated by processing the preceding generic audio (non-speech) frame for the necessary parameters. Because necessary parameters are obtained by the speech coder/decoder, the discontinuities associated with prior-art techniques are reduced when transitioning between generic audio frames and speech frames.

摘要翻译： 本文提供了一种用于处理包括通用音频和语音帧的音频信号的编码器和解码器。 在操作期间，语音编码器利用两个编码器，语音解码器利用两个解码器。 两个编码器和解码器分别用于处理语音和非语音（通用音频）。 在通用音频和语音之间的转换期间，语音解码器为解码语音帧所需的参数是通过处理前面的通用音频（非语音）帧来产生的，用于必要的参数。 由于必要的参数是由语音编码器/解码器获得的，当在通用音频帧和语音帧之间转换时，与现有技术相关联的不连续性被减少。

公开(公告)号：US08209190B2

公开(公告)日：2012-06-26

申请号：US12187423

申请日：2008-08-07

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： G10L21/00 ,  G10L21/04 ,  G10L19/00

CPC分类号： G10L19/24

摘要： During operation an input signal to be coded is received and coded to produce a coded audio signal. The coded audio signal is then scaled with a plurality of gain values to produce a plurality of scaled coded audio signals, each having an associated gain value and a plurality of error values are determined existing between the input signal and each of the plurality of scaled coded audio signals. A gain value is then chosen that is associated with a scaled coded audio signal resulting in a low error value existing between the input signal and the scaled coded audio signal. Finally, the low error value is transmitted along with the gain value as part of an enhancement layer to the coded audio signal.

摘要翻译： 在操作期间，接收并编码要编码的输入信号以产生编码的音频信号。 编码的音频信号然后用多个增益值进行缩放以产生多个缩放的经编码的音频信号，每个具有相关联的增益值，并且多个误差值被确定存在于输入信号与多个经缩放的编码 音频信号 然后选择与缩放的编码音频信号相关联的增益值，导致存在于输入信号和缩放的经编码音频信号之间的低误差值。 最后，将低误差值与作为增强层的一部分的增益值一起传送到编码音频信号。

公开(公告)号：US20100125453A1

公开(公告)日：2010-05-20

申请号：US12273974

申请日：2008-11-19

申请人： Jonathan A. Gibbs ,  James P. Ashley ,  Holly L. Francois ,  Udar Mittal

发明人： Jonathan A. Gibbs ,  James P. Ashley ,  Holly L. Francois ,  Udar Mittal

IPC分类号： G10L19/00

CPC分类号： G10L19/167

摘要： Apparatus (119) for encoding at least one parameter associated with a signal source for transmission over k frames to a decoder comprises a processor (119) 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： 用于将与用于在k个帧上传输的信号源相关联的至少一个参数编码到解码器的装置（119）包括处理器（119），其被配置用于将预定位模式分配给与所述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。

公开(公告)号：US20120095757A1

公开(公告)日：2012-04-19

申请号：US13247129

申请日：2011-09-28

申请人： Jonathan A. Gibbs ,  James P. Ashley ,  Udar Mittal

发明人： Jonathan A. Gibbs ,  James P. Ashley ,  Udar Mittal

IPC分类号： G10L19/12

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。

公开(公告)号：US20110218797A1

公开(公告)日：2011-09-08

申请号：US12844199

申请日：2010-07-27

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： G10L19/00

CPC分类号： G10L19/18 ,  G10L19/0212 ,  G10L19/12 ,  G10L19/20

摘要： A method for encoding audio frames by producing a first frame of coded audio samples by coding a first audio frame in a sequence of frames, producing at least a portion of a second frame of coded audio samples by coding at least a portion of a second audio frame in the sequence of frames, and producing parameters for generating audio gap filler samples, wherein the parameters are representative of either 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.

摘要翻译： 一种通过以帧序列编码第一音频帧来产生编码音频样本的第一帧来对音频帧进行编码的方法，通过编码第二音频的至少一部分来产生编码音频采样的第二帧的至少一部分 帧，并产生用于产生音频间隙填充样本的参数，其中参数表示编码音频样本的第一帧的加权段或编码音频样本的第二帧的部分的加权段 。

公开(公告)号：US08924200B2

公开(公告)日：2014-12-30

申请号：US13247140

申请日：2011-09-28

申请人： Jonathan A. Gibbs ,  James P. Ashley ,  Udar Mittal

发明人： Jonathan A. Gibbs ,  James P. Ashley ,  Udar Mittal

IPC分类号： G06F15/00 ,  G10L25/00 ,  G10L19/00 ,  G10L21/00 ,  G10L19/02 ,  G10L25/90 ,  G10L25/93 ,  G10L19/06 ,  G10L21/04 ,  G10L21/038

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，所述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，其中所述音频信号的带宽延伸超过所述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。

公开(公告)号：US08868432B2

公开(公告)日：2014-10-21

申请号：US13247129

申请日：2011-09-28

申请人： Jonathan A. Gibbs ,  James P. Ashley ,  Udar Mittal

发明人： Jonathan A. Gibbs ,  James P. Ashley ,  Udar Mittal

IPC分类号： G10L19/00 ,  G10L21/00 ,  G10L19/12 ,  G10L19/02 ,  G10L19/06 ,  G10L25/90 ,  G10L25/00 ,  H04B1/66 ,  H03M7/00 ,  A61F11/06 ,  G10K11/16 ,  H03B29/00 ,  G10L21/038

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。

公开(公告)号：US20090259477A1

公开(公告)日：2009-10-15

申请号：US12099842

申请日：2008-04-09

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

CPC分类号： G10L19/24 ,  G10L19/22

摘要： In a selective signal encoder, an input signal is first encoded using a core layer encoder to produce a core layer encoded signal. The core layer encoded signal is decoded to produce a reconstructed signal and an error signal is generated as the difference between the reconstructed signal and the input signal. The reconstructed signal is compared to the input signal. One of two or more enhancement layer encoders selected 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 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以产生核心层编码信号。 核心层编码信号被解码以产生重构信号，并且产生误差信号作为重构信号和输入信号之间的差。 将重建的信号与输入信号进行比较。 根据比较选择的两个或更多个增强层编码器中的一个，并用于对误差信号进行编码。 核心层编码信号，增强层编码信号和选择指示符被输出到信道（例如用于传输或存储）。

公开(公告)号：US20090112607A1

公开(公告)日：2009-04-30

申请号：US12187423

申请日：2008-08-07

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

CPC分类号： G10L19/24

摘要： During operation an input signal to be coded is received and coded to produce a coded audio signal. The coded audio signal is then scaled with a plurality of gain values to produce a plurality of scaled coded audio signals, each having an associated gain value and a plurality of error values are determined existing between the input signal and each of the plurality of scaled coded audio signals. A gain value is then chosen that is associated with a scaled coded audio signal resulting in a low error value existing between the input signal and the scaled coded audio signal. Finally, the low error value is transmitted along with the gain value as part of an enhancement layer to the coded audio signal.

摘要翻译： 在操作期间，接收并编码要编码的输入信号以产生编码的音频信号。 编码的音频信号然后用多个增益值进行缩放以产生多个缩放的经编码的音频信号，每个具有相关联的增益值，并且多个误差值被确定存在于输入信号与多个经缩放的编码 音频信号 然后选择与缩放的编码音频信号相关联的增益值，导致存在于输入信号和缩放的经编码音频信号之间的低误差值。 最后，将低误差值与作为增强层的一部分的增益值一起传送到编码音频信号。

公开(公告)号：US08639519B2

公开(公告)日：2014-01-28

申请号：US12099842

申请日：2008-04-09

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

CPC分类号： G10L19/24 ,  G10L19/22

摘要： In a selective signal encoder, an input signal is first encoded using a core layer encoder to produce a core layer encoded signal. The core layer encoded signal is decoded to produce a reconstructed signal and an error signal is generated as the difference between the reconstructed signal and the input signal. The reconstructed signal is compared to the input signal. One of two or more enhancement layer encoders selected 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 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以产生核心层编码信号。 核心层编码信号被解码以产生重构信号，并且产生误差信号作为重构信号和输入信号之间的差。 将重建的信号与输入信号进行比较。 根据比较选择的两个或更多个增强层编码器中的一个，并用于对误差信号进行编码。 核心层编码信号，增强层编码信号和选择指示符被输出到信道（例如用于传输或存储）。