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1.发明专利Method and apparatus for improved detection of rate error in variable rate receiver 有权用于改善可变速率接收机中速率误差检测的方法和装置
公开(公告)号：JP2009207141A
公开(公告)日：2009-09-10
申请号：JP2009038917
申请日：2009-02-23
Applicant: Qualcomm Inc , クゥアルコム・インコーポレイテッドQualcomm Incorporated
Inventor： EL-MALEH KHALED H , CHOY EDDIE-LUN TIK , ANANTHAPADMANABHAN ARASANIPALA , DEJACO ANDREW P , HUANG PENGJUN
CPC classification number: H04L1/08 , H04L1/0046 , H04L1/201
Abstract: PROBLEM TO BE SOLVED: To prevent rate determination algorithm errors from causing audible artifacts such as screeches or beeps, in a system and method for detection of rate determination algorithm errors in variable rate communications system receivers.
SOLUTION: 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.
COPYRIGHT: (C)2009,JPO&INPITAbstract translation: 要解决的问题：在用于检测可变速率通信系统接收机中的速率确定算法错误的系统和方法中，防止速率确定算法错误引起诸如吱吱声或嘟嘟声的声音伪像。 解决方案：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，验证未使用的过滤器类型位组合以及分析固定代码簿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。 版权所有（C）2009，JPO＆INPIT
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公开(公告)号：JP2009193073A
公开(公告)日：2009-08-27
申请号：JP2009032506
申请日：2009-02-16
Applicant: Qualcomm Inc , クゥアルコム・インコーポレイテッドQualcomm Incorporated
Inventor： CHOY EDDIE-LUN TIK , ANANTHAPADMANABHAN ARASANIPALA , DEJACO ANDREW P
CPC classification number: G10L19/167
Abstract: PROBLEM TO BE SOLVED: To enhance coding efficiency by reducing illegal or other undesirable packet generation while encoding a signal. SOLUTION: A probability of generating illegal or other undesirable packets while encoding a signal is reduced by first analyzing a history of the frequency of codebook values selected while quantizing speech parameters. Codebook entries are then reordered by a codebook reordering section so that the index/indices that create illegal or the undesirable packets contain the least frequently used entry/entries. Reordering multiple codebooks for various parameters further reduces the probability, that an illegal or the undesirable packet will be created during signal encoding. COPYRIGHT: (C)2009,JPO&INPIT
Abstract translation: 要解决的问题：通过在编码信号时减少非法或其他不期望的分组生成来提高编码效率。 解决方案：通过首先分析在量化语音参数时选择的码本值的频率的历史来减少在编码信号时产生非法或其他不期望的分组的概率。 然后，码本条目由码本重新排序部分重新排序，使得创建非法的索引/索引或不期望的分组包含最少频繁使用的条目/条目。 对各种参数重新排序多个码本进一步降低了在信号编码期间将创建非法或不合需要的数据包的概率。 版权所有（C）2009，JPO＆INPIT
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公开(公告)号：JP2009187012A
公开(公告)日：2009-08-20
申请号：JP2009033854
申请日：2009-02-17
Applicant: Qualcomm Inc , クゥアルコム・インコーポレイテッドQualcomm Incorporated
Inventor： EL-MALEH KHALED H , ANANTHAPADMANABHAN ARASANIPALA , DEJACO ANDREW P
CPC classification number: G10L21/038 , G10L19/26
Abstract: PROBLEM TO BE SOLVED: To provide a technology for converting wideband speech signals to narrowband speech signals without losing acoustic quality. SOLUTION: Wideband speech signals must be converted to narrowband speech signals if a transmission medium or a destination terminal is constructed with narrowband constraints. A typical wideband-to-narrowband conversion method is elimination of frequencies above 3400 Hz using a low pass filter and a down sampler. However, this method produces a muffled speech sound since the resulting narrowband signal includes a flat frequency response. Methods and apparatus are presented herein to enhance the acoustic quality of a wideband-to-narrowband converted signal. A bandwidth switching filter is used to emphasize a mid-range frequency portion of the wideband signal so that the resulting narrowband signal includes a non-flat frequency spectrum. COPYRIGHT: (C)2009,JPO&INPIT
Abstract translation: 要解决的问题：提供用于将宽带语音信号转换为窄带语音信号而不失去声学质量的技术。 解决方案：如果传输介质或目标终端构造为窄带约束，宽带语音信号必须转换为窄带语音信号。 典型的宽带到窄带转换方法是使用低通滤波器和下采样器消除3400Hz以上的频率。 然而，该方法产生消声语音，因为所得到的窄带信号包括平坦的频率响应。 这里呈现了增强宽带到窄带转换信号的声学质量的方法和装置。 带宽切换滤波器用于强调宽带信号的中等频率部分，使得所得到的窄带信号包括非平坦频谱。 版权所有（C）2009，JPO＆INPIT
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公开(公告)号：ES2287122T3
公开(公告)日：2007-12-16
申请号：ES01927283
申请日：2001-04-20
Applicant: QUALCOMM INC
Inventor： ANANTHAPADMANABHAN ARASANIPALA , MANJUNATH SHARATH , HUANG PENGJUN , CHOY EDDIE-LUN TIK , DEJACO ANDREW P
Abstract: Un aparato para generar (500) una trama de salida de cifrador de habla, comprendiendo dicho aparato: medios para extraer componentes de retardo de tono, componentes de amplitud, componentes de fase y componentes de información espectral de línea a partir de una pluralidad de tramas de habla sonora; medios para obtener vectores de error objetivo, según un esquema de cuantificación predictiva, para las componentes de retardo de tono, componentes de amplitud, componentes de fase y componentes de información espectral lineal; medios para cuantificar el vector de error objetivo de las componentes de retardo de tono, el vector de error objetivo de las componentes de amplitud, el vector de error objetivo de las componentes de fase, y el vector de error objetivo de las componentes de información espectral de línea; medios para combinar los vectores de error objetivo cuantificados de las componentes de retardo de tono, componentes de amplitud, componentes de fase, y componentes de información espectral de línea para formar la trama de salida de cifrador de habla.
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公开(公告)号：AT363711T
公开(公告)日：2007-06-15
申请号：AT01927283
申请日：2001-04-20
Applicant: QUALCOMM INC
Inventor： ANANTHAPADMANABHAN ARASANIPALA , MANJUNATH SHARATH , HUANG PENGJUN , CHOY EDDIE-LUN , DEJACO ANDREW
Abstract: 13. A computer-readable medium comprising instructions that upon execution in a processor cause the processor to perform the methods as recited in any of claims 5 to 8.
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Patent Agency Ranking
公开(公告)号：BR0115905A
公开(公告)日：2004-04-06
申请号：BR0115905
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
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.
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公开(公告)号：NO20033543L
公开(公告)日：2003-10-10
申请号：NO20033543
申请日：2003-08-11
Applicant: QUALCOMM INC
Inventor： CHOY EDDIE-LUN TIK , ANANTHAPADMANABHAN ARASANIPALA , DEJACO ANDREW P
Abstract: A method and apparatus for enhancing coding efficiency by reducing illegal or other undesirable packet generation while encoding a signal, The probability of generating illegal or other undesirable packets while encoding a signal is reduced by first analyzing a history of the frequency of codebook values selected while quantizing speech parameters. Codebook entries are then positioned so that the index/indices that create illegal or other undesirable packets contain the least frequently used entry/entries. Positioning multiple codebooks for various parameters further reduces the probability, that an illegal or other undesirable packet will be created during signal encoding. The method and apparatus may be applied to reduce the probability of generating illegal null traffic channel data packets while encoding eight rate speech.
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公开(公告)号：HK1045396A1
公开(公告)日：2002-11-22
申请号：HK02106869
申请日：2002-09-20
Applicant: QUALCOMM INC
Inventor： ANANTHAPADMANABHAN ARASANIPALA , MANJUNATH SHARATH
Abstract: A method and apparatus for interleaving line spectral information quantization methods in a speech coder includes quantizing line spectral information with two vector quantization techniques, the first technique being a non-moving-average prediction-based technique, and the second technique being a moving-average prediction-based technique. A line spectral information vector is vector quantized with the first technique. Equivalent moving average codevectors for the first technique are computed. A memory of a moving average codebook of codevectors is updated with the equivalent moving average codevectors for a predefined number of frames that were previously processed by the speech coder. A target quantization vector for the second technique is calculated based on the updated moving average codebook memory. The target quantization vector is vector quantized with the second technique to generate a quantized target codevector. The memory of the moving average codebook is updated with the quantized target codevector. Quantized line spectral information vectors are derived from the quantized target codevector.
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公开(公告)号：CA2430883A1
公开(公告)日：2002-06-13
申请号：CA2430883
申请日：2001-11-29
Applicant: QUALCOMM INC
Inventor： DEJACO ANDREW P , EL-MALEH KHALED H , HUANG PENGJUN , ANANTHAPADMANABHAN ARASANIPALA , CHOY EDDIE-LUN TIK
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.
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公开(公告)号：NO20020294D0
公开(公告)日：2002-01-18
申请号：NO20020294
申请日：2002-01-18
Applicant: QUALCOMM INC
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