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81. 发明申请

WO2003096326A3 AUDIO COMPRESSION 审中-公开
公开(公告)号：WO2003096326A3
公开(公告)日：2003-11-20
申请号：PCT/GB2003/002031
申请日：2003-05-12
申请人： SCALA TECHNOLOGY LIMTED , DUNN, Chris
发明人： DUNN, Chris
IPC分类号： G10L19/14
摘要： A method of scalable audio compression includes bitplane coding of frequency-domain transform coefficients, where newly-significant coefficient locations within the current bitplane are identified using runlength codes. Reordering coefficients prior to bitplane coding such that same-frequency coefficients are clustered together has the effect of increasing coding efficiency. The invention is applicable to both full-bandwidth and layered bitplane coding.

82. 发明申请

WO0245280A3 SYSTEM AND METHOD FOR PROCESSING AN AUDIO SIGNAL PRIOR TO ENCODING 审中-公开
标题翻译：用于处理编码前的音频信号的系统和方法
公开(公告)号：WO0245280A3
公开(公告)日：2003-07-24
申请号：PCT/US0145360
申请日：2001-11-30
申请人： DELFIN MEDIA GROUP INC
发明人： DELEON ROLAND H
IPC分类号： G10L19/14 , H03M1/12
CPC分类号： H03M1/129 , G10L19/167 , G10L19/265
摘要： The present invention comprises methods and systems for processing an audio signal prior to encoding. The audio signal is pre-processed to provide analog-to-analog modification that creates a preferred analog format that is effectively and efficiently ready to be converted into a digital data stream by an encoder, such as an A-to-D converter or codec. One possible application includes, for example, a web streamer that provides digital data streams from a server. The inventive arrangements are preferably carried by functional stand-alone components, integral components of a PC or other computing platform, or carried as part of the encoder. Preferably, the pre-processing comprises receiving the audio signal, nominalizing the signal to provide a level input, and compressing and equalizing the signal for outputting thereof.
摘要翻译：本发明包括用于在编码之前处理音频信号的方法和系统。音频信号被预处理以提供模拟 - 模拟修改，其创建优选的模拟格式，其被有效地和有效地准备好由诸如A到D转换器或编解码器的编码器转换成数字数据流。一个可能的应用包括例如从服务器提供数字数据流的网络流传送器。本发明的布置优选地由功能独立部件，PC或其他计算平台的整体部件携带，或作为编码器的一部分携带。优选地，预处理包括接收音频信号，对信号进行标称以提供电平输入，以及压缩和均衡用于输出的信号。

83. 发明申请

WO0221505A3 SYSTEM AND METHOD FOR PROCESSING AUDIO DATA 审中-公开
标题翻译：用于处理音频数据的系统和方法
公开(公告)号：WO0221505A3
公开(公告)日：2003-03-13
申请号：PCT/US0128088
申请日：2001-09-07
申请人： NEURAL AUDIO INC , REAMS ROBERT W
发明人： REAMS ROBERT W
IPC分类号： G10L21/00 , G10L21/013 , G11B20/10 , G11B27/031 , H04H1/00 , G10L19/14 , G10L21/02 , H03G5/02 , H03G5/16 , H04H5/00
CPC分类号： H04H60/04 , G10L21/00 , G10L2021/0135 , G11B20/10527 , G11B27/031
摘要： A system for processing audio data is provided. The system includes a spectral shaping system that receives sample audio data and adaptive gain dat and generates spectral characteristic data for one or more spectral bands. The system also includes an audio processing system that receives the spectral characteristic data and which processes the audio data so as to provide the spectral characteristic data for the spectral bands of the audio data.
摘要翻译：提供了一种用于处理音频数据的系统。该系统包括频谱整形系统，其接收采样音频数据和自适应增益数据，并产生一个或多个频谱带的频谱特征数据。该系统还包括音频处理系统，其接收频谱特征数据并处理音频数据，以便为音频数据的频谱带提供频谱特征数据。

84. 发明申请

WO02065457A3 SPEECH CODING SYSTEM WITH A MUSIC CLASSIFIER 审中-公开
标题翻译：具有音乐分类器的语音编码系统
公开(公告)号：WO02065457A3
公开(公告)日：2003-02-27
申请号：PCT/US0201847
申请日：2002-01-22
申请人： CONEXANT SYSTEMS INC
发明人： BENYASSINE ADIL , SU HUAN-YU
IPC分类号： G10L11/02 , G10L19/14
CPC分类号： G10L19/18 , G10L25/78 , G10L2025/783
摘要： The invention provides a speech coding system with a music classifier. An encoder is disposed to receive an input signal and provides a bitstream based upon a speech coding of a portion of the input signal. The encoder provides a classification of the input signal as one of noise, speech, and music. The music classifier analyzes or determines signal properties of the input signal. The music classifier compares the signal properties to thresholds to determine the classification of the input signal.
摘要翻译：本发明提供一种具有音乐分类器的语音编码系统。编码器被设置为接收输入信号并且基于输入信号的一部分的语音编码来提供比特流。编码器将输入信号分类为噪声，语音和音乐之一。音乐分类器分析或确定输入信号的信号特性。音乐分类器将信号属性与阈值进行比较，以确定输入信号的分类。

85. 发明申请

WO2002095734A3 VERFAHREN ZUR STEUERUNG DES VERSTÄRKUNGSFAKTORS EINES PRÄDIKTIVEN SPRACHKODIERES 审中-公开
公开(公告)号：WO2002095734A3
公开(公告)日：2002-11-28
申请号：PCT/DE2002/001598
申请日：2002-05-02
申请人： SIEMENS AKTIENGESELLSCHAFT , FINGSCHEIDT, Tim , TADDEI, Herve , VARGA, Imre
发明人： FINGSCHEIDT, Tim , TADDEI, Herve , VARGA, Imre
IPC分类号： G10L19/14
摘要： Die Erfindung betrifft ein Verfahren zur Codierung von Sprachsignalen, insbesondere von sogenannten "Sprach-Onset"-Abschnitten. Durch Festsetzen des ersten Verstärkungsfaktors wird die Datenmenge zur Darstellung der Gesamtheit von erstem oder adaptivem Verstärkungsfaktor und adaptivem Codebucheintrag reduziert, wodurch andere Parameter, welche im Zuge der Sprachcodierung auftreten, genauer dargestellt werden können.Die Erfindung betrifft weiterhin ein Verfahren zur Übertragung von derart codierten Sprachsignalen.

86. 发明申请

WO2002082426A1 ADPCM SPEECH CODING SYSTEM WITH PHASE-SMEARING AND PHASE-DESMEARING FILTERS 审中-公开
标题翻译： ADPCM语音编码系统，具有相位和相位去除滤波器
公开(公告)号：WO2002082426A1
公开(公告)日：2002-10-17
申请号：PCT/IB2002/001009
申请日：2002-03-27
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V.
发明人： GIGI, Ercan, F.
IPC分类号： G10L19/14
CPC分类号： H04B1/66 , G10L19/26 , H04B14/06
摘要： In a speech coding system with a speech encoder and a speech decoder cooperating with said speech encoder, the speech encoder comprises a pre-processor and an ADPCM (adaptive differential pulse code modulation) encoder with a quantizer and step-size adaptation means, while the speech decoder comprises an ADPCM decoder with similar step-size adaptation means as in the ADPCM encoder and a decoder, and a post-processor. The pre-processor is provided with phase-smearing filtering means to smooth the effect of high and/or rapid energy changes at the input of the quantizer, while the post-processor is provided with filtering means inverse to said phase-smearing filtering means.
摘要翻译：在具有与所述语音编码器协作的语音编码器和语音解码器的语音编码系统中，语音编码器包括预处理器和具有量化器和步长适应装置的ADPCM（自适应差分脉码调制）编码器，而语音解码器包括具有与ADPCM编码器和解码器以及后处理器中相似的步长适应装置的ADPCM解码器。预处理器设置有相位滤波装置，以平滑量化器输入处的高和/或快速能量变化的影响，而后处理器设置有与所述相位滤波装置相反的滤波装置。

87. 发明申请

WO2002065458A2 METHOD AND APPARATUS FOR INTEROPERABILITY BETWEEN VOICE TRANSMISSION SYSTEMS DURING SPEECH INACTIVITY 审中-公开
标题翻译：在语音不活动期间语音传输系统之间的互操作性的方法和装置
公开(公告)号：WO2002065458A2
公开(公告)日：2002-08-22
申请号：PCT/US2002/003013
申请日：2002-01-30
申请人： QUALCOMM INCORPORATED
发明人： EL-MALEH, Khaled, H. , ANANTHAPADMANABHAN, Arasanipalai, K. , DEJACO, Andrew, P.
IPC分类号： G10L19/14
CPC分类号： G10L19/173
摘要： The disclosed embodiments provide a method and apparatus for interoperability between CTX and DTX communications systems during transmissions of silence or background noise. Continuous eight rate encoded noise frames are translated to discontinuous SID frames for transmission to DTX systems (402-410). Discontinuous SID frames are translated to continuous eight rate encoded noise frames for decoding by a CTX system (602-606). Applications of CTX to DTX interoperability comprise CDMA and GSM interoperability (narrowband voice transmission systems), CDMA next generation vocoder (The Selectable Mode Vocoder) interoperability with the new ITU-T 4 kbps vocoder operating in DTX-mode for Voice Over IP applications, future voice transmission systems that have a common speech encoder/decoder but operate in differing CTX or DTX modes during speech non-activity, and CDMA wideband voice transmission system interoperability with other wideband voice transmission systems with common wideband vocoders but with different modes of operation (DTX or CTX) during voice non-activity).
摘要翻译：所公开的实施例提供了在静音或背景噪声的传输期间CTX和DTX通信系统之间的互操作性的方法和装置。连续的八个速率编码的噪声帧被转换为不连续的SID帧以传输到DTX系统（402-410）。不连续的SID帧被转换为连续的八个速率编码的噪声帧，用于由CTX系统（602-606）进行解码。 CTX到DTX互操作性的应用包括CDMA和GSM互操作性（窄带语音传输系统），CDMA下一代声码器（可选模式声码器）与用于IP语音应用的DTX模式下运行的新ITU-T 4 kbps声码器的互操作性，未来语音传输系统具有通用语音编码器/解码器，但在语音非活动期间以不同的CTX或DTX模式工作，以及CDMA宽带语音传输系统与具有普通宽带声码器但具有不同操作模式（DTX）的其他宽带语音传输系统的互操作性或CTX）在语音非活动期间）。

88. 发明申请

WO2002065457A2 SPEECH CODING SYSTEM WITH A MUSIC CLASSIFIER 审中-公开
标题翻译：具有音乐分类器的语音编码系统
公开(公告)号：WO2002065457A2
公开(公告)日：2002-08-22
申请号：PCT/US2002/001847
申请日：2002-01-22
申请人： CONEXANT SYSTEMS, INC.
发明人： BENYASSINE, Adil , SU, Huan-Yu
IPC分类号： G10L19/14
CPC分类号： G10L19/18 , G10L25/78 , G10L2025/783
摘要： The invention provides a speech coding system with a music classifier. An encoder is disposed to receive an input signal and provides a bitstream based upon a speech coding of a portion of the input signal. The encoder provides a classification of the input signal as one of noise, speech, and music. The music classifier analyzes or determines signal properties of the input signal. The music classifier compares the signal properties to thresholds to determine the classification of the input signal.
摘要翻译：本发明提供一种具有音乐分类器的语音编码系统。编码器被设置为接收输入信号并且基于输入信号的一部分的语音编码来提供比特流。编码器将输入信号分类为噪声，语音和音乐之一。音乐分类器分析或确定输入信号的信号特性。音乐分类器将信号属性与阈值进行比较，以确定输入信号的分类。

89. 发明申请

WO0230098A3 METHOD AND SYSTEM FOR RATE ADAPTATION IN A PACKET VOICE SYSTEM 审中-公开
标题翻译：分组语音系统中速率适应的方法和系统
公开(公告)号：WO0230098A3
公开(公告)日：2002-07-04
申请号：PCT/US0142468
申请日：2001-10-05
申请人： MOTOROLA INC
发明人： XIE QIAOBING , GUPTA SANJAY
IPC分类号： G10L19/005 , G10L19/18 , H04L1/00 , H04L1/16 , H04L29/06 , G10L19/14 , G10L19/00
CPC分类号： H04L65/1083 , G10L19/005 , G10L19/18 , H04L1/0014 , H04L1/0025 , H04L1/007 , H04L29/06027 , H04L65/80
摘要： In a network, transmitted voice quality is improved by receiving voice packets from a remote voice coder, wherein the received voice packets have been encoded at a higher encoding rate. If a packet loss rate that exceeds a threshold loss rate is detected, a reduce encoding rate message is sent to the remote voice coder to cause the remote voice coder to encode future voice packets at a lower encoding rate. The voice packets may include a change encoding rate message in an error tolerant portion of the voice packet. The change encoding rate message may also include parity information for verifying the integrity of the message.
摘要翻译：在网络中，通过从远程语音编码器接收语音分组来改善传输的语音质量，其中所接收的语音分组已经以更高的编码速率被编码。如果检测到超过阈值丢失率的分组丢失率，则将减少编码速率消息发送到远程语音编码器，以使远程语音编码器以较低的编码速率对未来的语音分组进行编码。语音分组可以包括语音分组的容错部分中的改变编码速率消息。改变编码速率消息还可以包括用于验证消息的完整性的奇偶校验信息。

90. 发明申请

WO02045286A2 ACOUSTIC COMMUNICATION SYSTEM 审中-公开
标题翻译：声音通信系统
公开(公告)号：WO02045286A2
公开(公告)日：2002-06-06
申请号：PCT/GB2001/005300
申请日：2001-11-30
IPC分类号： A63H3/36 , G01S5/30 , G10L19/00 , G10L19/018 , G10L19/02 , G10L19/14 , H03M7/00 , H04H20/31 , H04M1/247 , H04M1/253 , H04M1/57 , H04N5/60 , H04N7/08 , H04N7/088 , H04B1/66
CPC分类号： H04H20/31 , A63H3/365 , A63H2200/00 , G01S5/30 , G10L19/018 , H04M1/2155 , H04M1/253 , H04M1/274516 , H04M1/57 , H04M1/578 , H04M1/72547 , H04M1/72561 , H04N5/607 , H04N7/08 , H04N7/088 , H04N21/233 , H04N21/4126 , H04N21/42203 , H04N21/435 , H04N21/439 , H04N21/4622 , H04N21/4722 , H04N21/488 , H04N21/8133 , H04N21/8358 , H04N21/8586
摘要： There is described a number of encoders for encoding a data signal within an audio signal. In some of the encoders, the audio signal is separated into a tonal part and a residual part, and the data signal is shaped based on the residual part. In other encoders, the data signal is separated into a tonal part and a residual part, and the data signal is combined with the audio signal independence upon the residual part. In other encoders, the rate at which the data is encoded within the audio signal is varied in dependence upon the audio signal. There are also described various decoders associated with the described encoders.
摘要翻译：描述了用于对音频信号内的数据信号进行编码的多个编码器。在一些编码器中，音频信号被分离成音调部分和残余部分，并且数据信号基于剩余部分成形。在其他编码器中，数据信号被分离为音调部分和残余部分，并且数据信号与残留部分上的音频信号独立地组合。在其他编码器中，数据在音频信号内编码的速率根据音频信号而变化。还描述了与所描述的编码器相关联的各种解码器。

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