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41. 发明申请

WO01010020A1 FILTER BANKED GAIN CONTROL OF AUDIO IN A NOISY ENVIRONMENT 审中-公开
标题翻译：滤波器在噪声环境中的音频增益控制
公开(公告)号：WO01010020A1
公开(公告)日：2001-02-08
申请号：PCT/US2000/020395
申请日：2000-07-27
IPC分类号： H03G3/24 , H03G3/32 , H03G5/16 , H03G9/02
CPC分类号： H03G5/165 , G10L19/008 , G10L19/032 , H03G3/32
摘要： A method and device for boosting an input signal to overcome noise. Both the input signal, S(t), and an estimate of the noise, N(t), are bandpassed in adjacent pass bands to produce signal and noise subbands. Preferably, the input signal is delayed before being bandpassed. The power envelopes of the signal subbands are converted to signal masking functions, (70), that incorporate the phenomena of forward and backward masking. Signal masking functions whose amplitudes are below the amplitudes of their frequency neighbors are nulled. Similarly, noise subbands whose powers are below the powers of neighboring noise subbands are nulled. The surviving signal masking functions are compared to the corresponding surviving noise power envelopes to determine the degree to which the surviving signal subbands must be amplified, (78), to overcome the noise. The surviving signal subbands are so amplified and summed to provide the output signal, S'(t). Because of wide band masking, this processing by subbands is inhibited during the onset of incoming signal. Similarly, in a two-way communications device, this processing by subbands is inhibited while the user is speaking.
摘要翻译：一种用于升高输入信号以克服噪声的方法和装置。输入信号S（t）和噪声估计N（t）都在相邻通带中被带通，以产生信号和噪声子带。优选地，输入信号在被带通之前被延迟。信号子带的功率包络被转换成信号屏蔽功能（70），其包含正向和反向掩蔽的现象。幅度低于其频率邻居幅度的信号屏蔽功能为零。类似地，其功率低于相邻噪声子带的功率的噪声子带被置零。将幸存的信号屏蔽功能与相应的幸存噪声功率包络进行比较，以确定存活信号子带必须被放大的程度（78），以克服噪声。幸存的信号子带被如此放大和相加以提供输出信号S'（t）。由于宽带掩蔽，在进入信号的开始期间，子带的这种处理被禁止。类似地，在双向通信设备中，在用户正在说话时，子带的这种处理被禁止。

42. 发明申请

WO1996027869A1 VOICE-BAND COMPRESSION SYSTEM 审中-公开
标题翻译：语音压缩系统
公开(公告)号：WO1996027869A1
公开(公告)日：1996-09-12
申请号：PCT/CA1996000127
申请日：1996-03-01
申请人： NEWBRIDGE NETWORKS CORPORATION , VERREAULT, Eric , ABOULNASR, Tyseer
发明人： NEWBRIDGE NETWORKS CORPORATION
IPC分类号： G10L03/02
CPC分类号： G10L19/032 , G10L19/0204
摘要： A voice compression apparatus for use in telephony comprises a device for decomposing a voice signal into a bank of narrow frequency band signals, an estimator for estimating the instantaneous energy in each band, a comparator for comparing the energy in each band to of all other bands to estimate the audibility threshold of the signal in each band, and a device for independently quantizing the signal in each band on the basis of the estimated audibility threshold. The inventive apparatus offers low processing delays and reduced computational requirements, and is suitable for use in telecommunications networks.
摘要翻译：用于电话的语音压缩装置包括用于将语音信号分解成一组窄频带信号的装置，用于估计每个频带中的瞬时能量的估计器，用于将每个频带中的能量与所有其它频带进行比较的比较器以估计每个频带中的信号的可听阈值，以及用于基于估计的可听度阈值独立量化每个频带中的信号的装置。本发明的设备提供低处理延迟和减少的计算需求，并且适用于电信网络。

43. 发明申请

WO2017140600A1 POST-PROCESSOR, PRE-PROCESSOR, AUDIO ENCODER, AUDIO DECODER AND RELATED METHODS FOR ENHANCING TRANSIENT PROCESSING 审中-公开
标题翻译：后处理器，前处理器，音频编码器，音频解码器和用于增强瞬时处理的相关方法
公开(公告)号：WO2017140600A1
公开(公告)日：2017-08-24
申请号：PCT/EP2017/053068
申请日：2017-02-10
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： GHIDO, Florin , DISCH, Sascha , HERRE, Jürgen , ADAMI, Alexander , REUTELHUBER, Franz
IPC分类号： H03G3/00 , H03G5/16
CPC分类号： G10L19/032 , G10L19/008 , G10L19/26 , H03G5/005 , H03G5/165
摘要： An audio post-processor (100) for post-processing an audio signal (102) having a time-variable high frequency gain information (104) as side information comprises: a band extractor (110) for extracting a high frequency band (112) of the audio signal (102) and a low frequency band (114) of the audio signal (102); a high band processor (120) for performing a time-variable modification of the high frequency band (112) in accordance with the time-variable high frequency gain information (104) to obtain a processed high frequency band (122); and a combiner (130) for combining the processed high frequency band (122) and the low frequency band (114). Furthermore, a pre-processor for analyzing an audio signal to determine a time-variable high frequency gain information, perform modification of an high frequency band, and output a signal comprising the pre-processed audio signal and the high frequency gain information.
摘要翻译：用于后处理具有作为辅助信息的时变高频增益信息（104）的音频信号（102）的音频后处理器（100）包括：频带提取器（110），用于提取音频信号（102）的高频带（112）和音频信号（102）的低频带（114）; 高频带处理器（120），用于根据所述时变高频增益信息（104）对所述高频带（112）进行时变修改以获得经处理的高频带（122）; 以及用于组合经处理的高频带（122）和低频带（114）的组合器（130）。此外，用于分析音频信号以确定随时间变化的高频增益信息，执行高频带的修改并输出包括预处理音频信号和高频增益信息的信号的预处理器。 p>

44. 发明申请

WO2016142002A1 AUDIO ENCODER, AUDIO DECODER, METHOD FOR ENCODING AN AUDIO SIGNAL AND METHOD FOR DECODING AN ENCODED AUDIO SIGNAL 审中-公开
标题翻译：音频编码器，音频解码器，用于编码音频信号的方法和用于解码编码的音频信号的方法
公开(公告)号：WO2016142002A1
公开(公告)日：2016-09-15
申请号：PCT/EP2015/063658
申请日：2015-06-17
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： HELMRICH, Christian , EDLER, Bernd , NEUENDORF, Max , SCHUBERT, Benjamin
IPC分类号： G10L19/02
CPC分类号： G10L19/032 , G10L19/02 , H04N19/547 , H04N19/635
摘要： An encoder for encoding an audio signal. The encoder is configured to encode the audio signal in a transform domain or filter-bank domain, wherein the encoder is configured to determine spectral coefficients of the audio signal for a current frame and at least one previous frame, wherein the encoder is configured to selectively apply predictive encoding to a plurality of individual spectral coefficients or groups of spectral coefficients which are separated by at least one spectral coefficient.
摘要翻译：用于对音频信号进行编码的编码器。编码器被配置为在变换域或滤波器组域中对音频信号进行编码，其中编码器被配置为确定当前帧和至少一个先前帧的音频信号的频谱系数，其中编码器被配置为选择性地将预测编码应用于由至少一个频谱系数分隔的多个频谱系数或频谱系数组。

45. 发明申请

WO2016016123A1 AUDIO ENCODER AND DECODER USING A FREQUENCY DOMAIN PROCESSOR WITH FULL-BAND GAP FILLING AND A TIME DOMAIN PROCESSOR 审中-公开
标题翻译：音频编码器和解码器，它使用带全带隙填充和时域处理器的频域处理器
公开(公告)号：WO2016016123A1
公开(公告)日：2016-02-04
申请号：PCT/EP2015/067003
申请日：2015-07-24
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： DISCH, Sascha , DIETZ, Martin , MULTRUS, Markus , FUCHS, Guillaume , RAVELLI, Emmanuel , NEUSINGER, Matthias , SCHNELL, Markus , SCHUBERT, Benjamin , GRILL, Bernhard
IPC分类号： G10L19/18 , G10L19/02 , G10L19/028 , G10L19/04 , G10L19/24 , G10L21/038
CPC分类号： G10L19/18 , G10L19/02 , G10L19/028 , G10L19/032 , G10L19/04 , G10L19/06 , G10L19/24 , G10L19/265 , G10L21/038
摘要： An audio encoder for encoding an audio signal, comprises: a first encoding processor (600) for encoding a first audio signal portion in a frequency domain, wherein the first encoding processor (600) comprises: a time frequency converter (602) for converting the first audio signal portion into a frequency domain representation having spectral lines up to a maximum frequency of the first audio signal portion; an analyzer (604) for analyzing the frequency domain representation up to the maximum frequency to determine first spectral portions to be encoded with a first spectral resolution and second spectral regions to be encoded with a second spectral resolution, the second spectral resolution being lower than the first spectral resolution; a spectral encoder (606) for encoding the first spectral portions with the first spectral resolution and for encoding the second spectral portions with the second spectral resolution; a second encoding processor (610) for encoding a second different audio signal portion in the time domain; a controller (620) configured for analyzing the audio signal and for determining, which portion of the audio signal is the first audio signal portion encoded in the frequency domain and which portion of the audio signal is the second audio signal portion encoded in the time domain; and an encoded signal former (630) for forming an encoded audio signal comprising a first encoded signal portion for the first audio signal portion and a second encoded signal portion for the second audio signal portion.
摘要翻译：一种用于对音频信号进行编码的音频编码器，包括：用于对频域中的第一音频信号部分进行编码的第一编码处理器（600），其中所述第一编码处理器（600）包括：时间频率转换器（602）第一音频信号部分转换成具有高达第一音频信号部分的最大频率的频谱线的频域表示; 分析器（604），用于分析直到最大频率的频域表示，以确定要用第一光谱分辨率编码的第一光谱部分和要用第二光谱分辨率编码的第二光谱区域，第二光谱分辨率低于第一光谱分辨率; 用于对具有第一光谱分辨率的第一光谱部分进行编码并用第二光谱分辨率编码第二光谱部分的光谱编码器（606）用于在时域中对第二不同音频信号部分进行编码的第二编码处理器（610）配置用于分析音频信号并确定音频信号的哪个部分是在频域中编码的第一音频信号部分的控制器（620），并且音频信号的哪个部分是在时域中编码的第二音频信号部分 ; 以及用于形成编码音频信号的编码信号形成器（630），包括用于第一音频信号部分的第一编码信号部分和用于第二音频信号部分的第二编码信号部分。

46. 发明申请

WO2015199955A1 TEMPORAL GAIN ADJUSTMENT BASED ON HIGH-BAND SIGNAL CHARACTERISTIC 审中-公开
标题翻译：基于高频信号特征的时间增益调整
公开(公告)号：WO2015199955A1
公开(公告)日：2015-12-30
申请号：PCT/US2015/034540
申请日：2015-06-05
申请人： QUALCOMM INCORPORATED
发明人： ATTI, Venkatraman S. , KRISHNAN, Venkatesh , RAJENDRAN, Vivek , CHEBIYYAM, Venkata Subrahmanyam Chandra Sekhar , SUBASINGHA, Subasingha Shaminda
IPC分类号： G10L19/06 , G10L19/02 , G10L19/24 , G10L21/038
CPC分类号： G10L19/12 , G10L19/0204 , G10L19/032 , G10L19/06 , G10L19/24 , G10L21/0224 , G10L21/038 , G10L25/12 , G10L2019/0016
摘要： 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.
摘要翻译：本公开提供了用于调整时间增益参数和用于调整线性预测系数的技术。时间增益参数的值可以基于音频信号的合成高频带部分与音频信号的高频带部分的比较。如果高频带部分的较高频率范围的信号特性满足第一阈值，则可以调整时间增益参数。可以基于对LP阶使用第一值的LP增益操作来确定线性预测（LP）增益。 LP增益可以与LP合成滤波器的能级相关联。如果LP增益满足第二阈值，LP阶可以减小。

47. 发明申请

WO2015175953A1 CLOSED LOOP QUANTIZATION OF HIGHER ORDER AMBISONIC COEFFICIENTS 审中-公开
标题翻译：闭环式定量更高级别的健康系数
公开(公告)号：WO2015175953A1
公开(公告)日：2015-11-19
申请号：PCT/US2015/031107
申请日：2015-05-15
申请人： QUALCOMM INCORPORATED
发明人： KIM, Moo Young , PETERS, Nils Günther , SEN, Dipanjan
IPC分类号： G10L19/032 , G10L19/20 , G10L19/008
CPC分类号： G10L19/008 , G10L19/032 , G10L19/038 , G10L19/20 , H04S3/02 , H04S5/005 , H04S2400/01 , H04S2420/11
摘要： In general, techniques are described for closed loop quantization of HOA coefficients that provide a three-dimensional representation of the sound field. An audio encoding device may perform closed loop quantization of an audio object based at least in part on a result of performing quantization of directional information associated with the audio object. An audio decoding device may obtain an audio object that has been closed loop quantized based at least in part on a result of performing quantization of directional information associated with the audio object, and may dequantize the audio object.
摘要翻译：通常，描述了提供声场的三维表示的HOA系数的闭环量化的技术。音频编码装置可以至少部分地基于与音频对象相关联的方向信息的量化的结果来执行音频对象的闭环量化。音频解码装置可以至少部分地基于与音频对象相关联的方向信息的量化的结果来获得已被闭环量化的音频对象，并且可以对音频对象进行去量化。

48. 发明申请

WO2015166734A1 符号化装置、復号装置、及びその方法、プログラム审中-公开
标题翻译：编码设备，解码设备，编码和解码方法以及编码和解码程序
公开(公告)号：WO2015166734A1
公开(公告)日：2015-11-05
申请号：PCT/JP2015/057728
申请日：2015-03-16
申请人：日本電信電話株式会社
发明人：守谷　健弘 , 鎌本　優 , 原田　登
IPC分类号： G10L19/07
CPC分类号： G10L19/07 , G10L19/032 , G10L19/06 , G10L2019/0016
摘要：　全体として符号量の増大を抑えつつ、スペクトルの変動が大きいフレームについても線形予測係数に変換可能な係数を精度良く符号化及び復号する技術を提供する。符号化装置は、複数次の線形予測係数に変換可能な係数を符号化して第一符号を得る第一符号化部と、(A-1)複数次の線形予測係数に変換可能な係数に対応するスペクトル包絡の山谷の大きさに対応する指標Ｑが所定の閾値Th1以上である場合、および／または、(B-1)スペクトル包絡の山谷の小ささに対応する指標Ｑ'が所定の閾値Th1'以下である場合、少なくとも第一符号化部の量子化誤差を符号化して第二符号を得る第二符号化部とを含む。
摘要翻译：本发明提供一种技术，其中通过最小化整体编码大小的增加，即使对于表现出大量频谱变化的帧，可以以高精度编码和解码可以变换为线性预测系数的系数。该编码装置具有第一编码单元和第二编码单元。第一编码单元通过对可以变换为高阶线性预测系数的系数进行编码来获得第一符号。第二编码单元通过对来自第一编码单元的量化误差进行编码而获得第二符号，至少如果（A-1）与对应于可以是的系数的频谱包络中的峰和谷有多大的索引（Q）被转换为高阶线性预测系数大于或等于规定阈值（Th1）和/或（B-1）对应于上述频谱包络中的峰值和谷值小的索引（Q'）较小超过或等于规定的阈值（Th1'）。

49. 发明申请

WO2015055800A1 CODING OF SPECTRAL COEFFICIENTS OF A SPECTRUM OF AN AUDIO SIGNAL 审中-公开
标题翻译：音频信号频谱的光谱系数的编码
公开(公告)号：WO2015055800A1
公开(公告)日：2015-04-23
申请号：PCT/EP2014/072290
申请日：2014-10-17
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： FUCHS, Guillaume , NEUSINGER, Matthias , MULTRUS, Markus , DOEHLA, Stefan
IPC分类号： G10L19/00 , H03M7/40 , G10L19/032
CPC分类号： G10L19/0017 , G10L19/02 , G10L19/032
摘要： A coding efficiency of coding spectral coefficients of a spectrum of an audio signal is increased by en/decoding a currently to be en/decoded spectral coefficient by entropy en/decoding and, in doing so, performing the entropy en/decoding depending, in a context-adaptive manner, on a previously en/decoded spectral coefficient, while adjusting a relative spectral distance between the previously en/decoded spectral coefficient and the currently en/decoded spectral coefficient depending on an information concerning a shape of the spectrum. The information concerning the shape of the spectrum may comprise a measure of a pitch or periodicity of the audio signal, a measure of an inter- harmonic distance of the audio signal's spectrum and/or relative locations of formants and/or valleys of a spectral envelope of the spectrum, and on the basis of this knowledge, the spectral neighborhood which is exploited in order to form the context of the currently to be en/decoded spectral coefficients may be adapted to the thus determined shape of the spectrum, thereby enhancing the entropy coding efficiency.
摘要翻译：音频信号的频谱编码频谱系数的编码效率通过使用熵输入/解码对当前要解码的频谱系数进行解码来增加，并且在这样做时，根据同时根据与频谱形状有关的信息，调整先前已解码的频谱系数和当前已解码的频谱系数之间的相对频谱距离。关于频谱的形状的信息可以包括音频信号的音高或周期的度量，音频信号的频谱的谐波间距和/或频谱包络的共振峰和/或谷的相对位置的测量并且在该知识的基础上，为了形成当前要被解码的频谱系数的上下文而被利用的频谱邻域可以适应于由此确定的频谱的形状，从而增强熵编码效率。

50. 发明申请

WO2015025051A1 APPARATUS AND METHOD FOR PROCESSING AN AUDIO SIGNAL USING A COMBINATION IN AN OVERLAP RANGE 审中-公开
标题翻译：使用叠加范围内组合处理音频信号的装置和方法
公开(公告)号：WO2015025051A1
公开(公告)日：2015-02-26
申请号：PCT/EP2014/067944
申请日：2014-08-22
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITÄT ERLANGEN-NÜRNBERG
发明人： DISCH, Sascha , NAGEL, Frederik , GEIGER, Ralf , NEUKAM, Christian , EDLER, Bernd
IPC分类号： G10L19/02 , G10L19/028 , G10L21/038
CPC分类号： G10L19/022 , G06F17/147 , G10L19/0212 , G10L19/028 , G10L19/032 , G10L21/038
摘要： An apparatus for processing an audio signal comprising a sequence of blocks (114) of spectral values comprises: a processor (100) for processing the sequence of blocks using at least one modification values (102) for a first block to obtain aliasing-reduced or aliasing-free first result signal in an overlap range (170) and using at least one second different modification value (106) for a second block of the sequence of blocks to obtain an aliasing-reduced or aliasing-free second result signal (108) in the overlap range (170); and a combiner (110) for combining the first result signal (104) and the second result signal (108) in the overlap range (170) to obtain a processed signal (112) for the overlap range (170).
摘要翻译：一种用于处理包括频谱值块序列（114）的音频信号的装置包括：处理器（100），用于使用至少一个第一块的修改值（102）来处理所述块序列以获得混叠减少或在重叠范围（170）中使用无混叠的第一结果信号，并且为块序列的第二块使用至少一个第二不同修改值（106）以获得无混叠减少或无混叠的第二结果信号（108）在重叠范围内（170）; 以及用于在所述重叠范围（170）中组合所述第一结果信号（104）和所述第二结果信号（108）以获得所述重叠范围（170）的处理信号（112）的组合器（110）。

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