公开(公告)号：WO0247316A2

公开(公告)日：2002-06-13

申请号：PCT/US0144574

申请日：2001-11-29

Applicant: QUALCOMM INC

Inventor： EL-MALEH KHALED H ,  CHOY EDDIE-LUN TIK ,  ANANTHAPADMANABHAN ARASANIPALA ,  DEJACO ANDREW P ,  HUANG PENGJUN

IPC: H04B7/26 ,  H04L1/00 ,  H04L1/08 ,  H04L29/08

CPC classification number: H04L1/08 ,  H04L1/0046 ,  H04L1/201

Abstract: A system and method for detection of rate determination algorithm errors in variable rate communications system receivers. The disclosed embodiments prevent rate determination algorithm errors from causing audible artifacts such as screeches or beeps. The disclosed system and method detects frames with incorrectly determined data rates and performs frame erasure processing and/or memory state clean up to prevent propagation of distortion across multiple frames. Frames with incorrectly determined data rates are detected by checking illegal rate transitions, reserved bits, validating unused filter type bit combinations and analyzing relationships between fixed code-book gains and linear prediction coefficient gains.

Abstract translation: 一种用于在可变速率通信系统接收机中检测速率确定算法错误的系统和方法。 所公开的实施例防止速率确定算法错误引起可听见的伪影，例如吱吱声或哔哔声。 所公开的系统和方法检测具有错误确定的数据速率的帧，并执行帧擦除处理和/或存储器状态清理，以防止跨多个帧的失真传播。 通过检查非法速率转换，保留位，验证未使用的滤波器类型位组合以及分析固定码本增益和线性预测系数增益之间的关系来检测具有不正确确定的数据速率的帧。

公开(公告)号：WO2009149356A3

公开(公告)日：2010-05-27

申请号：PCT/US2009046416

申请日：2009-06-05

Applicant: QUALCOMM INC ,  WERNER MARC W ,  PIETSCH CHRISTIAN ,  SGRAJA CHRISTIAN ,  GRANZOW WOLFGANG ,  LEUNG NIKOLAI K N ,  JOETTEN CHRISTOPH A ,  HUANG PENGJUN

Inventor： WERNER MARC W ,  PIETSCH CHRISTIAN ,  SGRAJA CHRISTIAN ,  GRANZOW WOLFGANG ,  LEUNG NIKOLAI K N ,  JOETTEN CHRISTOPH A ,  HUANG PENGJUN

IPC: H04L1/00 ,  H04L1/18

CPC classification number: H04L1/0003 ,  H04L1/1607 ,  H04L1/1858 ,  H04L1/189

Abstract: A system is provided for transmitting information through a speech codec (inband) such as found in a wireless communication network. A modulator transforms the data into a spectrally noise-like signal based on the mapping of a shaped pulse to predetermined positions within a modulation frame, and the signal is efficiently encoded by a speech codec. A synchronization sequence provides modulation frame timing at the receiver and is detected based on analysis of a correlation peak pattern. A request/response protocol provides reliable transfer of data using message redundancy, retransmission, and/or robust modulation modes dependent on the communication channel conditions.

公开(公告)号：WO0233695A3

公开(公告)日：2002-07-04

申请号：PCT/US0142575

申请日：2001-10-06

Applicant: QUALCOMM INC

Inventor： HUANG PENGJUN

IPC: G10L19/04 ,  G10L19/18 ,  H03M7/30 ,  G10L19/14

CPC classification number: G10L19/12 ,  G10L19/083 ,  G10L19/18 ,  G10L25/93

Abstract: A low-bit-rate coding technique for unvoiced segments of speech. A set of gains are derived from a residual signal after whitening the speech signal by a linear prediction filter. These gains are then quantized and applied to a randomly generated sparse excitation. The excitation is filtered, and its spectral characteristics are analyzed and compared to the spectral characteristics of the original residual signal. Based on this analysis, a filter is chosen to shape the spectral characteristics of the excitation to achieve optimal performance.

Abstract translation: 用于无声段语音的低比特率编码技术。 通过线性预测滤波器对语音信号进行白化后的残差信号得到一组增益。 然后将这些增益量化并应用于随机产生的稀疏激发。 对激发进行滤波，并对其光谱特征进行分析，并将其与原始残留信号的光谱特性进行比较。 基于此分析，选择滤波器来形成激发的光谱特征以实现最佳性能。

公开(公告)号：WO2009149352A3

公开(公告)日：2010-05-27

申请号：PCT/US2009046410

申请日：2009-06-05

Applicant: QUALCOMM INC ,  SGRAJA CHRISTIAN ,  WERNER MARC W ,  PIETSCH CHRISTIAN ,  GRANZOW WOLFGANG ,  LEUNG NIKOLAI K N ,  JOETTEN CHRISTOPH A ,  HUANG PENGJUN

Inventor： SGRAJA CHRISTIAN ,  WERNER MARC W ,  PIETSCH CHRISTIAN ,  GRANZOW WOLFGANG ,  LEUNG NIKOLAI K N ,  JOETTEN CHRISTOPH A ,  HUANG PENGJUN

IPC: H04L1/00 ,  H04L1/18

CPC classification number: H04L1/1858 ,  G10L19/167 ,  H04J3/06 ,  H04L1/0003 ,  H04L1/003 ,  H04L1/1607 ,  H04L1/189

Abstract: A system is provided for transmitting information through a speech codec (inband) such as found in a wireless communication network. A modulator transforms the data into a spectrally noise-like signal based on the mapping of a shaped pulse to predetermined positions within a modulation frame, and the signal is efficiently encoded by a speech codec. A synchronization sequence provides modulation frame timing at the receiver and is detected based on analysis of a correlation peak pattern. A request/response protocol provides reliable transfer of data using message redundancy, retransmission, and/or robust modulation modes dependent on the communication channel conditions.

Abstract translation: 提供了一种用于通过诸如在无线通信网络中找到的语音编解码器（带内）来传输信息的系统。 调制器基于成形脉冲到调制帧内的预定位置的映射将数据变换成频谱噪声类信号，并且该信号由语音编解码器有效地编码。 同步序列在接收机处提供调制帧定时，并基于相关峰值模式的分析来检测。 请求/响应协议使用依赖于通信信道条件的消息冗余，重传和/或鲁棒调制模式来提供数据的可靠传输。

公开(公告)号：WO2010005660A2

公开(公告)日：2010-01-14

申请号：PCT/US2009046420

申请日：2009-06-05

Applicant: QUALCOMM INC ,  LEUNG NIKOLAI K N ,  WERNER MARC W ,  PIETSCH CHRISTIAN ,  GRANZOW WOLFGANG ,  SGRAJA CHRISTIAN ,  JOETTEN CHRISTOPH A ,  HUANG PENGJUN

Inventor： LEUNG NIKOLAI K N ,  WERNER MARC W ,  PIETSCH CHRISTIAN ,  GRANZOW WOLFGANG ,  SGRAJA CHRISTIAN ,  JOETTEN CHRISTOPH A ,  HUANG PENGJUN

IPC: H04L1/16

CPC classification number: H04L7/04 ,  H04L1/0003 ,  H04L1/1607 ,  H04L1/1858 ,  H04L1/189 ,  H04L7/041 ,  H04M11/04

Abstract: A system is provided for transmitting information through a speech codec (inband) such as found in a wireless communication network. A modulator transforms the data into a spectrally noise-like signal based on the mapping of a shaped pulse to predetermined positions within a modulation frame, and the signal is efficiently encoded by a speech codec. A synchronization sequence provides modulation frame timing at the receiver and is detected based on analysis of a correlation peak pattern. A request/response protocol provides reliable transfer of data using message redundancy, retransmission, and/or robust modulation modes dependent on the communication channel conditions.

公开(公告)号：WO0247068A3

公开(公告)日：2002-08-22

申请号：PCT/US0146971

申请日：2001-12-04

Applicant: QUALCOMM INC

Inventor： HUANG PENGJUN

IPC: G10L15/02 ,  G10L11/04 ,  G10L11/06 ,  G10L15/20 ,  G10L19/12 ,  G10L21/02

CPC classification number: G10L25/93 ,  G10L19/025 ,  G10L19/22 ,  G10L25/78

Abstract: A speech classification technique (502-530) for robust classification of varying modes of speech to enable maximum performance of multi-mode variable bit rate encoding techniques. A speech classifier accurately classifies a high percentage of speech segments for encoding at minimal bit rates, meeting lower bit rate requirements. Highly accurate speech classification produces a lower average encoded bit rate, and higher quality decoded speech. The speech classifier considers a maximum number of parameters for each frame of speech, producing numerous and accurate speech mode classifications for each frame. The speech classifier correctly classifies numerous modes of speech under varying environmental conditions. The speech classifier inputs classification parameters from external components, generates internal classification parameters from the input parameters, sets a Normalized Auto-correlation Coefficient Function threshold and selects a parameter analyzer according to the signal environment, and then analyzes the parameters to produce a speech mode classification.

Abstract translation: 一种语音分类技术（502-530），用于对变化模式的语音进行鲁棒分类以实现多模式可变比特率编码技术的最大性能。 语音分类器能够以最低比特率对高比例的语音段进行编码，从而满足较低的比特率要求。 高度准确的语音分类产生较低的平均编码比特率和较高质量的解码语音。 语音分类器考虑每个语音帧的最大参数数量，为每个帧产生许多和准确的语音模式分类。 语音分类器可以在各种环境条件下正确分类众多语音模式。 语音分类器从外部组件输入分类参数，根据输入参数生成内部分类参数，设置归一化自相关系数函数阈值并根据信号环境选择参数分析器，然后分析参数以产生语音模式分类 。