公开(公告)号：US09208775B2

公开(公告)日：2015-12-08

申请号：US14015996

申请日：2013-08-30

Applicant: QUALCOMM Incorporated

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

IPC: G10L19/10 ,  G10L13/02 ,  G10L25/90 ,  G10L19/005

CPC classification number: G10L13/02 ,  G10L19/005 ,  G10L19/10 ,  G10L25/90

Abstract: A method for determining pitch pulse period signal boundaries by an electronic device is described. The method includes obtaining a signal. The method also includes determining a first averaged curve based on the signal. The method further includes determining at least one first averaged curve peak position based on the first averaged curve and a threshold. The method additionally includes determining pitch pulse period signal boundaries based on the at least one first averaged curve peak position. The method also includes synthesizing a speech signal.

Abstract translation: 描述了一种通过电子设备确定音调脉冲周期信号边界的方法。 该方法包括获得信号。 该方法还包括基于该信号来确定第一平均曲线。 该方法还包括基于第一平均曲线和阈值确定至少一个第一平均曲线峰值位置。 该方法还包括基于至少一个第一平均曲线峰值位置来确定音调脉冲周期信号边界。 该方法还包括合成语音信号。

公开(公告)号：US20150170655A1

公开(公告)日：2015-06-18

申请号：US14334988

申请日：2014-07-18

Applicant: QUALCOMM Incorporated

Inventor： Sen Li ,  Stephane Pierre Villette ,  Daniel J. Sinder ,  Pravin Kumar Ramadas

IPC: G10L19/00

CPC classification number: G10L19/00 ,  G10L21/0388

Abstract: Systems and methods of performing blind bandwidth extension are disclosed. In an embodiment, a method includes receiving, at a decoder of a speech vocoder, a set of low-band parameters as part of a narrowband bitstream. The set of low-band parameters are received from an encoder of the speech vocoder. The method also includes predicting a set of high-band parameters based on the set of low-band parameters.

Abstract translation: 公开了执行盲带宽扩展的系统和方法。 在一个实施例中，一种方法包括在语音声码器的解码器处接收作为窄带比特流的一部分的一组低频带参数。 从语音声码器的编码器接收低频带参数的集合。 该方法还包括基于低频带参数的集合预测一组高频带参数。

公开(公告)号：US20150162008A1

公开(公告)日：2015-06-11

申请号：US14270963

申请日：2014-05-06

Applicant: QUALCOMM Incorporated

Inventor： Stephane Pierre Villette ,  Daniel J. Sinder

IPC: G10L19/00

CPC classification number: G10L19/00 ,  G10L19/005 ,  G10L19/008 ,  G10L19/24 ,  G10L21/038

Abstract: A device includes a decoder that includes an extractor, a predictor, a selector, and a switch. The extractor is configured to extract a first plurality of parameters from a received input signal. The input signal corresponds to an encoded audio signal. The predictor is configured to perform blind bandwidth extension by generating a second plurality of parameters independent of high band information in the input signal. The second plurality of parameters corresponds to a high band portion of the encoded audio signal. The selector is configured to select a particular mode from multiple high band modes including a first mode using the first plurality of parameters and a second mode using the second plurality of parameters. The switch is configured to output the first plurality of parameters or the second plurality of parameters based on the selected particular mode.

Abstract translation: 一种设备包括一个包括提取器，预测器，选择器和开关的解码器。 提取器被配置为从接收到的输入信号中提取第一多个参数。 输入信号对应于编码音频信号。 预测器被配置为通过产生独立于输入信号中的高频带信息的第二多个参数来执行盲带宽扩展。 第二多个参数对应于编码音频信号的高频带部分。 选择器被配置为从包括使用第一多个参数的第一模式和使用第二多个参数的第二模式的多个高频带模式中选择特定模式。 该开关被配置为基于所选择的特定模式来输出第一多个参数或第二多个参数。

公开(公告)号：US20150106107A1

公开(公告)日：2015-04-16

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

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的高频带信号和音频信号的高频带部分确定增益参数。