公开(公告)号：US20170053659A1

公开(公告)日：2017-02-23

申请号：US15174843

申请日：2016-06-06

Applicant: QUALCOMM Incorporated

Inventor： Subasingha Shaminda Subasingha ,  Venkatraman Atti ,  Vivek Rajendran

IPC: G10L19/16 ,  G10L19/087 ,  G10L19/07

CPC classification number: G10L19/167 ,  G10L19/005 ,  G10L19/07 ,  G10L19/087 ,  G10L19/24 ,  G10L21/038

Abstract: A method includes determining an error condition during a bandwidth transition period of an encoded audio signal. The error condition corresponds to a second frame of the encoded audio signal, where the second frame sequentially follows a first frame in the encoded audio signal. The method also includes generating audio data corresponding to a first frequency band of the second frame based on audio data corresponding to the first frequency band of the first frame. The method further includes re-using a signal corresponding to a second frequency band of the first frame to synthesize audio data corresponding to the second frequency band of the second frame.

Abstract translation: 一种方法包括在编码音频信号的带宽转换周期期间确定错误状况。 错误条件对应于编码音频信号的第二帧，其中第二帧顺序地跟随编码音频信号中的第一帧。 该方法还包括基于与第一帧的第一频带相对应的音频数据产生对应于第二帧的第一频带的音频数据。 该方法还包括重新使用对应于第一帧的第二频带的信号来合成对应于第二帧的第二频带的音频数据。

公开(公告)号：US09564141B2

公开(公告)日：2017-02-07

申请号：US14617524

申请日：2015-02-09

Applicant: QUALCOMM Incorporated

Inventor： Subasingha Shaminda Subasingha ,  Venkatesh Krishnan ,  Venkatraman S. Atti ,  Vivek Rajendran

IPC: G10L19/00 ,  G10L19/02 ,  G10L21/038 ,  G10L25/81 ,  G10L21/0272

CPC classification number: G10L19/0204 ,  G10L21/0272 ,  G10L21/038 ,  G10L25/81

Abstract: A method includes separating, at a device, an input audio signal into at least a low-band signal and a high-band signal. The low-band signal corresponds to a low-band frequency range and the high-band signal corresponds to a high-band frequency range. The method also includes selecting a non-linear processing function of a plurality of non-linear processing functions. The method further includes generating a first extended signal based on the low-band signal and the non-linear processing function. The method also includes generating at least one adjustment parameter based on the first extended signal, the high-band signal, or both.

Abstract translation: 一种方法包括在设备处将输入音频信号分离成至少低频带信号和高频带信号。 低频带信号对应于低频带频率范围，高频带信号对应于高频带频率范围。 该方法还包括选择多个非线性处理功能的非线性处理功能。 该方法还包括基于低频带信号和非线性处理功能产生第一扩展信号。 该方法还包括基于第一扩展信号，高频带信号或两者产生至少一个调整参数。

公开(公告)号：US20160372127A1

公开(公告)日：2016-12-22

申请号：US14836689

申请日：2015-08-26

Applicant: QUALCOMM Incorporated

Inventor： Venkata Subrahmanyam Chandra Sekhar Chebiyyam ,  Vivek Rajendran ,  Venkatraman S. Atti ,  Subasingha Shaminda Subasingha

IPC: G10L19/12 ,  G10L19/028 ,  G10L19/083 ,  G10L19/002 ,  G10L19/018 ,  G06F3/16

CPC classification number: G10L19/12 ,  G06F3/165 ,  G06F7/588 ,  G10L19/002 ,  G10L19/018 ,  G10L19/028 ,  G10L19/083 ,  G10L19/16

Abstract: A method includes selecting, at a device, a first seed generation scheme or a second seed generation scheme based on determining whether audio data satisfies a criterion. The audio data corresponds to a first audio frame of a sequence of frames. The first seed generation scheme includes generating a first seed value based on one or more parameters corresponding to the first audio frame (e.g., the bit-stream indices). The second seed generation scheme includes generating a second seed value based on a seed output value associated with a second audio frame of the sequence of frames. A seed value generated by the selected seed generation scheme is provided to a random noise generator.

Abstract translation: 一种方法包括：基于确定音频数据是否满足标准，在设备处选择第一种子生成方案或第二种子生成方案。 音频数据对应于帧序列的第一音频帧。 第一种子生成方案包括基于与第一音频帧对应的一个或多个参数（例如，比特流索引）来生成第一种子值。 第二种子生成方案包括基于与帧序列的第二音频帧相关联的种子输出值来生成第二种子值。 由选择的种子生成方案生成的种子值被提供给随机噪声发生器。

公开(公告)号：US09384746B2

公开(公告)日：2016-07-05

申请号：US14512892

申请日：2014-10-13

Applicant: QUALCOMM Incorporated

Inventor： Venkatraman S. Atti ,  Venkatesh Krishnan ,  Stephane Pierre Villette ,  Vivek Rajendran

IPC: G10L19/035 ,  G10L21/038 ,  G10L19/08 ,  G10L19/083 ,  G10L19/02

CPC classification number: G10L19/035 ,  G10L19/0204 ,  G10L19/08 ,  G10L19/083 ,  G10L21/038

Abstract: A method includes determining a first modeled high-band signal based on a low-band excitation signal of an audio signal, where the audio signal includes a high-band portion and a low-band portion. The method also includes determining scaling factors based on energy of sub-frames of the first modeled high-band signal and energy of corresponding sub-frames of the high-band portion of the audio signal. The method includes applying the scaling factors to a modeled high-band excitation signal to determine a scaled high-band excitation signal and determining a second modeled high-band signal based on the scaled high-band excitation signal. The method includes determining gain parameters based on the second modeled high-band signal and the high-band portion of the audio signal.

Abstract translation: 一种方法包括基于音频信号的低频带激励信号来确定第一建模的高频带信号，其中音频信号包括高频带部分和低频带部分。 该方法还包括基于第一建模高频带信号的子帧的能量和音频信号的高频带部分的对应子帧的能量来确定缩放因子。 该方法包括将缩放因子应用于建模的高频带激励信号以确定缩放的高频带激励信号，并且基于经缩放的高频带激励信号确定第二建模的高频带信号。 该方法包括基于第二建模高频带信号和音频信号的高频带部分确定增益参数。

公开(公告)号：US09236058B2

公开(公告)日：2016-01-12

申请号：US14015991

申请日：2013-08-30

Applicant: QUALCOMM Incorporated

Inventor： Subasingha Shaminda Subasingha ,  Venkatesh Krishnan ,  Vivek Rajendran ,  Stephane Pierre Villette

IPC: G10L19/02 ,  G10L19/032 ,  G10L19/097

CPC classification number: G10L19/032 ,  G10L19/02 ,  G10L19/097

Abstract: A method for quantizing phase information on an electronic device is described. The method includes obtaining a speech signal. The method also includes determining a prototype pitch period signal based on the speech signal and transforming the prototype pitch period signal into a first frequency-domain signal. The method additionally includes mapping the first frequency-domain signal into a plurality of subbands. The method also includes determining a global alignment based on the first frequency-domain signal and quantizing the global alignment utilizing scalar quantization to obtain a quantized global alignment. The method additionally includes determining a plurality of band alignments corresponding to the plurality of subbands. The method also includes quantizing the plurality of band alignments utilizing vector quantization to obtain a quantized plurality of band alignments. The method further includes transmitting the quantized global alignment and the quantized plurality of band alignments.

Abstract translation: 描述用于量化电子设备上的相位信息的方法。 该方法包括获得语音信号。 该方法还包括基于语音信号确定原型音调周期信号，并将原型音调周期信号变换为第一频域信号。 该方法还包括将第一频域信号映射到多个子带中。 该方法还包括基于第一频域信号确定全局对准，并使用标量量化量化全局比对以获得量化的全局比对。 该方法还包括确定对应于多个子带的多个频带对准。 该方法还包括利用矢量量化来量化多个频带比对以获得量化的多个频带比对。 该方法还包括发送量化的全局比对和量化的多个频带比对。

公开(公告)号：US20150380006A1

公开(公告)日：2015-12-31

申请号：US14731198

申请日：2015-06-04

Applicant: QUALCOMM Incorporated

Inventor： Venkatraman S. Atti ,  Venkatesh Krishnan ,  Vivek Rajendran ,  Venkata Subrahmanyam Chandra Sekhar Chebiyyam ,  Subasingha Shaminda Subasingha

IPC: G10L19/12 ,  G10L19/032 ,  G10L21/0224 ,  G10L19/06 ,  G10L25/12

CPC classification number: G10L19/12 ,  G10L19/0204 ,  G10L19/032 ,  G10L19/06 ,  G10L19/24 ,  G10L21/0224 ,  G10L21/038 ,  G10L25/12 ,  G10L2019/0016

Abstract: The present disclosure provides techniques for adjusting a temporal gain parameter and for adjusting linear prediction coefficients. A value of the temporal gain parameter may be based on a comparison of a synthesized high-band portion of an audio signal to a high-band portion of the audio signal. If a signal characteristic of an upper frequency range of the high-band portion satisfies a first threshold, the temporal gain parameter may be adjusted. A linear prediction (LP) gain may be determined based on an LP gain operation that uses a first value for an LP order. The LP gain may be associated with an energy level of an LP synthesis filter. The LP order may be reduced if the LP gain satisfies a second threshold.

公开(公告)号：US20150228288A1

公开(公告)日：2015-08-13

申请号：US14617524

申请日：2015-02-09

Applicant: QUALCOMM Incorporated

Inventor： Subasingha Shaminda Subasingha ,  Venkatesh Krishnan ,  Venkatraman S. Atti ,  Vivek Rajendran

IPC: G10L19/02

CPC classification number: G10L19/0204 ,  G10L21/0272 ,  G10L21/038 ,  G10L25/81

Abstract: A method includes separating, at a device, an input audio signal into at least a low-band signal and a high-band signal. The low-band signal corresponds to a low-band frequency range and the high-band signal corresponds to a high-band frequency range. The method also includes selecting a non-linear processing function of a plurality of non-linear processing functions. The method further includes generating a first extended signal based on the low-band signal and the non-linear processing function. The method also includes generating at least one adjustment parameter based on the first extended signal, the high-band signal, or both.

Abstract translation: 一种方法包括在设备处将输入音频信号分离成至少低频带信号和高频带信号。 低频带信号对应于低频带频率范围，高频带信号对应于高频带频率范围。 该方法还包括选择多个非线性处理功能的非线性处理功能。 该方法还包括基于低频带信号和非线性处理功能产生第一扩展信号。 该方法还包括基于第一扩展信号，高频带信号或两者产生至少一个调整参数。

公开(公告)号：US09047863B2

公开(公告)日：2015-06-02

申请号：US13718797

申请日：2012-12-18

Applicant: Qualcomm Incorporated

Inventor： Venkatesh Krishnan ,  Daniel J. Sinder ,  Vivek Rajendran

IPC: G10L19/005 ,  G10L19/04 ,  G10L19/008 ,  H04L1/00 ,  H04L1/08 ,  G10L19/107 ,  G10L19/09

CPC classification number: G10L19/04 ,  G10L19/005 ,  G10L19/008 ,  G10L19/09 ,  G10L19/107 ,  H04L1/0009 ,  H04L1/0014 ,  H04L1/007 ,  H04L1/08

Abstract: A method of audio signal processing is described. The method includes calculating a criticality measure based on information about a first frame of the audio signal. The method also includes calculating a threshold value based on information relating to a state of a transmission channel. The method further includes comparing the calculated criticality measure to the calculated threshold value. The method additionally includes deciding to transmit a redundant copy of the first frame based on a result of the comparison. The method also includes transmitting the redundant copy of the first frame with a second frame. The first frame precedes the second frame in the audio signal.

Abstract translation: 描述音频信号处理的方法。 该方法包括基于关于音频信号的第一帧的信息计算临界度度量。 该方法还包括基于与传输信道的状态有关的信息来计算阈值。 该方法还包括将计算的临界度测量值与所计算的阈值进行比较。 该方法还包括基于比较的结果决定发送第一帧的冗余副本。 该方法还包括用第二帧发送第一帧的冗余副本。 第一帧在音频信号中的第二帧之前。

公开(公告)号：US20150106106A1

公开(公告)日：2015-04-16

申请号：US14509817

申请日：2014-10-08

Applicant: QUALCOMM Incorporated

Inventor： Venkatraman S. Atti ,  Vivek Rajendran ,  Venkatesh Krishnan

IPC: G10L19/002 ,  G10L19/02

Abstract: A method includes receiving a second audio frame at a decoder. The second audio frame follows a first audio frame in an audio signal and includes a first number of bits allocated to primary coding information associated with the second audio frame, a second number of bits allocated to redundant coding information associated with the first audio frame, and an indicator of a frame type of the first audio frame. In response to a frame erasure condition associated with the first audio frame, the second number of bits is determined based on the indicator and used to decode the first audio frame. In clean channel conditions, the first audio frame is received and decoded based on primary coding bits in the first audio frame, and the first number of bits is determined based on the indicator and used to decode the second audio frame.

Abstract translation: 一种方法包括在解码器处接收第二音频帧。 第二音频帧遵循音频信号中的第一音频帧，并且包括分配给与第二音频帧相关联的主编码信息的第一数量的比特，分配给与第一音频帧相关联的冗余编码信息的第二数量的比特，以及 第一音频帧的帧类型的指示符。 响应于与第一音频帧相关联的帧擦除条件，基于指示符确定第二数量位，并用于解码第一音频帧。 在清洁信道条件下，基于第一音频帧中的主编码比特来接收和解码第一音频帧，并且基于指示符确定第一比特数，并用于解码第二音频帧。

公开(公告)号：US20140236587A1

公开(公告)日：2014-08-21

申请号：US14015984

申请日：2013-08-30

Applicant: QUALCOMM Incorporated

Inventor： Subasingha Shaminda Subasingha ,  Vivek Rajendran ,  Venkatesh Krishnan ,  Venkatraman Srinivasa Atti

IPC: G10L19/12

CPC classification number: G10L19/12 ,  G10L19/24

Abstract: A method for controlling an average encoding rate by an electronic device is described. The method includes obtaining a speech signal. The method also includes determining a first average rate. The method further includes determining a first threshold based on the first average rate. The method additionally includes controlling the average encoding rate by determining at least one other threshold based on the first threshold. The method also includes sending an encoded speech signal.

Abstract translation: 描述了一种通过电子设备来控制平均编码速率的方法。 该方法包括获得语音信号。 该方法还包括确定第一平均速率。 该方法还包括基于第一平均速率确定第一阈值。 该方法还包括通过基于第一阈值确定至少一个其他阈值来控制平均编码率。 该方法还包括发送编码语音信号。