公开(公告)号：US20100049342A1

公开(公告)日：2010-02-25

申请号：US12195837

申请日：2008-08-21

申请人： Tenkasi V. Ramabadran ,  Mark A. Jasiuk

发明人： Tenkasi V. Ramabadran ,  Mark A. Jasiuk

IPC分类号： G06F17/00

CPC分类号： G10L21/0388

摘要： A signal processing platform (300) presents (101) a signal to be processed and identifies (102) signal portions with specific characteristics that are used (103) to automatically determine at least one bounding frequency that can be used to facilitate bandwidth extension for the signal. Identifying these signal portions can comprise identifying signal portions that exhibit at least a predetermined level of energy. The step of determining the bounding frequency can comprise computing a magnitude spectrum for each of the identified signal portions that can be used to determine a corresponding measure of flatness within a pass band as pertains to a corresponding normalized signal portion to thereby provide corresponding vetted signal portions. Determining the bounding frequency can then comprise accumulating the magnitude spectrum for these vetted signal portions and using the resultant accumulation to estimate a corresponding signal envelope. This signal envelope can then be used to determine the at least one bounding frequency.

摘要翻译： 信号处理平台（300）呈现（101）要处理的信号，并识别（102）具有特定特征的信号部分（103），以自动确定可用于促进带宽扩展的至少一个边界频率 信号。 识别这些信号部分可以包括识别表现出至少预定水平能量的信号部分。 确定边界频率的步骤可以包括计算每个识别的信号部分的幅度谱，所述信号部分可被用于确定与通过频带内的对应的对应的测量平均度属于对应的归一化信号部分，从而提供对应的被检测的信号部分 。 确定边界频率可以包括累积这些被检测的信号部分的幅度谱，并且使用所得到的累积来估计相应的信号包络。 然后可以使用该信号包络来确定至少一个边界频率。

公开(公告)号：US08527283B2

公开(公告)日：2013-09-03

申请号：US13008924

申请日：2011-01-19

申请人： Mark A. Jasiuk ,  Tenkasi V. Ramabadran

发明人： Mark A. Jasiuk ,  Tenkasi V. Ramabadran

IPC分类号： G10L19/00 ,  G10L19/02

CPC分类号： G10L21/038 ,  G10L25/21

摘要： A method (100) includes receiving (101) an input digital audio signal comprising a narrow-band signal. The input digital audio signal is processed (102) to generate a processed digital audio signal. An estimate of the high-band energy level corresponding to the input digital audio signal is determined (103). Modification of the estimated high-band energy level is done based on an estimation accuracy and/or narrow-band signal characteristics (104). A high-band digital audio signal is generated based on the modified estimate of the high-band energy level and an estimated high-band spectrum corresponding to the modified estimate of the high-band energy level (105).

摘要翻译： 一种方法（100）包括接收（101）包括窄带信号的输入数字音频信号。 处理输入数字音频信号（102）以产生经处理的数字音频信号。 确定对应于输入数字音频信号的高频带能级的估计（103）。 基于估计精度和/或窄带信号特性来进行估计的高带能级的修改（104）。 基于高频带能级的修正估计和对应于高频带能级（105）的修改估计的估计高频带频谱，生成高频带数字音频信号。

公开(公告)号：US20090144062A1

公开(公告)日：2009-06-04

申请号：US11946978

申请日：2007-11-29

申请人： Tenkasi V. Ramabadran ,  Mark A. Jasiuk

发明人： Tenkasi V. Ramabadran ,  Mark A. Jasiuk

IPC分类号： G06F19/00

CPC分类号： G10L21/038

摘要： One provides (101) a digital audio signal having a corresponding signal bandwidth, and then provides (102) an energy value that corresponds to at least an estimate of out-of-signal bandwidth energy as corresponds to that digital audio signal. One then uses (103) the energy value to simultaneously determine both a spectral envelope shape and a corresponding suitable energy for the spectral envelope shape for out-of-signal bandwidth content as corresponds to the digital audio signal. By one approach, if desired, one then combines (104) (on, for example, a frame by frame basis) the digital audio signal with the out-of-signal bandwidth content to provide a bandwidth extended version of the digital audio signal to be audibly rendered to thereby improve corresponding audio quality of the digital audio signal as so rendered.

摘要翻译： 一个提供（101）具有相应信号带宽的数字音频信号，然后提供对应于该数字音频信号的至少对信号外带宽能量的估计的能量值（102）。 然后，对应于数字音频信号，然后使用（103）能量值同时确定频谱包络形状和对于用于超出信号带宽内容的频谱包络形状的相应合适的能量。 通过一种方法，如果需要，然后将数字音频信号与输出信号带宽内容（104）（例如，逐帧地组合）（104）以提供数字音频信号的带宽扩展版本， 可听见地渲染，从而提高如此呈现的数字音频信号的相应音频质量。

公开(公告)号：US07027980B2

公开(公告)日：2006-04-11

申请号：US10109151

申请日：2002-03-28

申请人： Tenkasi V. Ramabadran ,  Aaron M. Smith ,  Mark A. Jasiuk

发明人： Tenkasi V. Ramabadran ,  Aaron M. Smith ,  Mark A. Jasiuk

IPC分类号： G10L19/00 ,  G10L19/04

CPC分类号： G10L19/06 ,  G10L19/087

摘要： A system or method for modeling a signal, such as a speech signal, in which harmonic frequencies and amplitudes are identified and the harmonic magnitudes are interpolated to obtain spectral magnitudes at a set of fixed frequencies. An inverse transform is applied to the spectral magnitudes to obtain a pseudo auto-correlation sequence, from which linear prediction coefficients are calculated. From the linear prediction coefficients, model harmonic magnitudes are generated by sampling the spectral envelope defined by the linear prediction coefficients. A set of scale factors are then calculated as the ratio of the harmonic magnitudes to the model harmonic magnitudes and interpolated to obtain a second set of scale factors at the set of fixed frequencies. The spectral envelope magnitudes at the set of fixed frequencies are multiplied by the second set of scale factors to obtain new spectral magnitudes and the process is iterated to obtain final linear prediction coefficients. The signal is modeled by the linear prediction coefficients.

公开(公告)号：US06633839B2

公开(公告)日：2003-10-14

申请号：US09775951

申请日：2001-02-02

申请人： William M. Kushner ,  Jeffrey Meunier ,  Mark A. Jasiuk ,  Tenkasi V. Ramabadran

发明人： William M. Kushner ,  Jeffrey Meunier ,  Mark A. Jasiuk ,  Tenkasi V. Ramabadran

IPC分类号： G10L1500

CPC分类号： G10L15/30 ,  G10L19/00 ,  G10L19/093 ,  G10L25/18

摘要： In a distributed speech recognition system comprising a first communication device which receives a speech input (34), encodes data representative of the speech input, and transmits the encoded data and a second remotely-located communication device which receives the encoded data and compares the encoded data with a known data set, the device including a processor with a program which controls the processor to operate according to a method of reconstructing the speech input including the step of receiving encoded data including encoded spectral data and encoded energy data. The method further includes the step of decoding the encoded spectral data and encoded energy data to determine the spectral data and energy data. The method also includes the step of combining the spectral data and energy data to reconstruct the speech input.

摘要翻译： 在包括接收语音输入（ 34 ）的第一通信设备的分布式语音识别系统中，对表示语音输入的数据进行编码，并将编码数据和第二远程 接收编码数据并将编码数据与已知数据集进行比较的装置，该装置包括具有程序的处理器，该程序控制处理器根据重构语音输入的方法进行操作，该方法包括接收编码数据的步骤 包括编码的光谱数据和编码的能量数据。 该方法还包括对编码的光谱数据和编码的能量数据进行解码以确定光谱数据和能量数据的步骤。 该方法还包括组合光谱数据和能量数据以重构语音输入的步骤

公开(公告)号：US20110112844A1

公开(公告)日：2011-05-12

申请号：US13008924

申请日：2011-01-19

申请人： Mark A. Jasiuk ,  Tenkasi V. Ramabadran

发明人： Mark A. Jasiuk ,  Tenkasi V. Ramabadran

IPC分类号： G10L19/00

CPC分类号： G10L21/038 ,  G10L25/21

摘要： A method (100) includes receiving (101) an input digital audio signal comprising a narrow-band signal. The input digital audio signal is processed (102) to generate a processed digital audio signal. An estimate of the high-band energy level corresponding to the input digital audio signal is determined (103). Modification of the estimated high-band energy level is done based on an estimation accuracy and/or narrow-band signal characteristics (104). A high-band digital audio signal is generated based on the modified estimate of the high-band energy level and an estimated high-band spectrum corresponding to the modified estimate of the high-band energy level (105).

摘要翻译： 方法（100）包括接收（101）包括窄带信号的输入数字音频信号。 处理输入数字音频信号（102）以产生经处理的数字音频信号。 确定对应于输入数字音频信号的高频带能级的估计（103）。 基于估计精度和/或窄带信号特性来进行估计的高带能级的修改（104）。 基于高频带能级的修正估计和对应于高频带能级（105）的修改估计的估计高频带频谱，生成高频带数字音频信号。

公开(公告)号：US20090201983A1

公开(公告)日：2009-08-13

申请号：US12027571

申请日：2008-02-07

申请人： Mark A. Jasiuk ,  Tenkasi V. Ramabadran

发明人： Mark A. Jasiuk ,  Tenkasi V. Ramabadran

IPC分类号： H04B1/66

CPC分类号： G10L21/038 ,  G10L25/21

摘要： A method (100) includes receiving (101) an input digital audio signal comprising a narrow-band signal. The input digital audio signal is processed (102) to generate a processed digital audio signal. An estimate of the high-band energy level corresponding to the input digital audio signal is determined (103). Modification of the estimated high-band energy level is done based on an estimation accuracy and/or narrow-band signal characteristics (104). A high-band digital audio signal is generated based on the modified estimate of the high-band energy level and an estimated high-band spectrum corresponding to the modified estimate of the high-band energy level (105).

摘要翻译： 方法（100）包括接收（101）包括窄带信号的输入数字音频信号。 处理输入数字音频信号（102）以产生经处理的数字音频信号。 确定对应于输入数字音频信号的高频带能级的估计（103）。 基于估计精度和/或窄带信号特性来进行估计的高带能级的修改（104）。 基于高频带能级的修正估计和对应于高频带能级（105）的修改估计的估计高频带频谱，生成高频带数字音频信号。

公开(公告)号：US08463412B2

公开(公告)日：2013-06-11

申请号：US12195837

申请日：2008-08-21

申请人： Tenkasi V. Ramabadran ,  Mark A. Jasiuk

发明人： Tenkasi V. Ramabadran ,  Mark A. Jasiuk

IPC分类号： G06F17/00

CPC分类号： G10L21/0388

摘要： A signal processing platform (300) presents (101) a signal to be processed and identifies (102) signal portions with specific characteristics that are used (103) to automatically determine at least one bounding frequency that can be used to facilitate bandwidth extension for the signal. Identifying these signal portions can comprise identifying signal portions that exhibit at least a predetermined level of energy. The step of determining the bounding frequency can comprise computing a magnitude spectrum for each of the identified signal portions that can be used to determine a corresponding measure of flatness within a pass band as pertains to a corresponding normalized signal portion to thereby provide corresponding vetted signal portions. Determining the bounding frequency can then comprise accumulating the magnitude spectrum for these vetted signal portions and using the resultant accumulation to estimate a corresponding signal envelope. This signal envelope can then be used to determine the at least one bounding frequency.

摘要翻译： 信号处理平台（300）呈现（101）要处理的信号，并识别（102）具有特定特征的信号部分（103），以自动确定可用于促进带宽扩展的至少一个边界频率 信号。 识别这些信号部分可以包括识别表现出至少预定水平能量的信号部分。 确定边界频率的步骤可以包括计算每个识别的信号部分的幅度谱，所述信号部分可被用于确定与通过频带内的对应的对应的测量平均度属于对应的归一化信号部分，从而提供对应的被检测的信号部分 。 确定边界频率可以包括累积这些被检测的信号部分的幅度谱，并且使用所得到的累积来估计相应的信号包络。 然后可以使用该信号包络来确定至少一个边界频率。

公开(公告)号：US08433582B2

公开(公告)日：2013-04-30

申请号：US12024620

申请日：2008-02-01

申请人： Tenkasi V. Ramabadran ,  Mark A. Jasiuk

发明人： Tenkasi V. Ramabadran ,  Mark A. Jasiuk

IPC分类号： G10L19/00

CPC分类号： G10L21/038 ,  G10L25/18 ,  G10L25/21

摘要： A method (100) includes receiving (101) an input digital audio signal comprising a narrow-band signal. The input digital audio signal is processed (102) to generate a processed digital audio signal. A high-band energy level corresponding to the input digital audio signal is estimated (103) based on a transition-band of the processed digital audio signal within a predetermined upper frequency range of a narrow-band bandwidth. A high-band digital audio signal is generated (104) based on the high-band energy level and an estimated high-band spectrum corresponding to the high-band energy level.

摘要翻译： 方法（100）包括接收（101）包括窄带信号的输入数字音频信号。 处理输入数字音频信号（102）以产生经处理的数字音频信号。 基于在窄带带宽的预定的上限频率范围内的经处理的数字音频信号的过渡频带，估计与输入的数字音频信号对应的高频能量电平（103）。 基于高频带能级和对应于高频带能级的估计高频带，产生高频带数字音频信号（104）。

公开(公告)号：US20110112845A1

公开(公告)日：2011-05-12

申请号：US13008925

申请日：2011-01-19

申请人： Mark A. Jasiuk ,  Tenkasi V. Ramabadran

发明人： Mark A. Jasiuk ,  Tenkasi V. Ramabadran

IPC分类号： G10L19/00

CPC分类号： G10L21/038 ,  G10L25/21

摘要： A method (100) includes receiving (101) an input digital audio signal comprising a narrow-band signal. The input digital audio signal is processed (102) to generate a processed digital audio signal. An estimate of the high-band energy level corresponding to the input digital audio signal is determined (103). Modification of the estimated high-band energy level is done based on an estimation accuracy and/or narrow-band signal characteristics (104). A high-band digital audio signal is generated based on the modified estimate of the high-band energy level and an estimated high-band spectrum corresponding to the modified estimate of the high-band energy level (105).