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1. 发明申请

US20070160219A1 Decoding of binaural audio signals 审中-公开
标题翻译：双耳音频信号的解码
公开(公告)号：US20070160219A1
公开(公告)日：2007-07-12
申请号：US11354211
申请日：2006-02-13
申请人： Julia Jakka , Pasi Ojala , Mauri Vaananen , Mikko Tammi
发明人： Julia Jakka , Pasi Ojala , Mauri Vaananen , Mikko Tammi
IPC分类号： H04R5/00 , H04R5/02
CPC分类号： H04S3/004 , H04S2400/01 , H04S2420/01
摘要： A method for synthesizing a binaural audio signal, the method comprising: inputting a parametrically encoded audio signal comprising at least one combined signal of a plurality of audio channels and one or more corresponding sets of side information describing a multi-channel sound image; and applying a predetermined set of head-related transfer function filters to the at least one combined signal in proportion determined by said corresponding set of side information to synthesize a binaural audio signal.
摘要翻译：一种用于合成双耳音频信号的方法，所述方法包括：输入包括多个音频通道的至少一个组合信号和描述多声道声音图像的一个或多个对应的副信息组的参数编码音频信号; 以及按照由所述相应的侧面信息组确定的比例，将至少一个组合信号应用到一组预定的头相关传递函数滤波器，以合成双耳音频信号。

2. 发明申请

US20150371643A1 STEREO AUDIO SIGNAL ENCODER 审中-公开
标题翻译：立体声音频编码器
公开(公告)号：US20150371643A1
公开(公告)日：2015-12-24
申请号：US14394211
申请日：2012-04-18
申请人： Anssi Ramo , Adriana Vasilache , Lasse Laaksonen , Miikka Vilermo , Mikko Tammi
发明人： Anssi Ramo , Adriana Vasilache , Lasse Laaksonen , Miikka Vilermo , Mikko Tammi
IPC分类号： G10L19/008 , H04S1/00
CPC分类号： G10L19/008 , H04S1/007 , H04S2420/03
摘要： An apparatus comprising a channel analyser configured to analyse an audio signal comprising at least two audio channels to determine at least one parameter associated with a difference between the at least two audio channels; an encoding mode determiner configured to select a multichannel audio signal encoding dependent on the at least one parameter; and a channel encoder configured to encode the audio signal with the multichannel audio signal encoding.
摘要翻译：一种装置，包括信道分析器，其被配置为分析包括至少两个音频信道的音频信号，以确定与所述至少两个音频信道之间的差异相关联的至少一个参数; 编码模式确定器，被配置为选择取决于所述至少一个参数的多声道音频信号编码; 以及频道编码器，被配置为用多声道音频信号编码对音频信号进行编码。

3. 发明申请

US20110010169A1 Reduced-Complexity Vector Indexing and De-indexing 有权
标题翻译：降低复杂度向量索引和去索引
公开(公告)号：US20110010169A1
公开(公告)日：2011-01-13
申请号：US12867873
申请日：2008-02-15
申请人： Adriana Vasilache , Lasse Laaksonen , Anssi Rämö , Mikko Tammi
发明人： Adriana Vasilache , Lasse Laaksonen , Anssi Rämö , Mikko Tammi
IPC分类号： G10L19/12
CPC分类号： H03M7/3082 , G10L19/038 , H04N19/94
摘要： This invention relates to indexing an input vector contained in a set of vectors of a plurality of sets of vectors. The indexing comprises performing, in case that the input vector is contained in a set of vectors of a pre-defined group of one or more sets of vectors of the plurality of sets of vectors, a specific processing that is adapted to a characteristic of the sets of vectors in the pre-defined group of sets of vectors and is only applicable in case of input vectors contained in sets of vectors with the characteristic. The indexing further comprises performing, in case that the input vector is not contained in a set of vectors of the pre-defined group of sets of vectors, a general processing. The invention further relates to an according determining of a target vector contained in a set of vectors of a plurality of sets of vectors based on an index associated with said target vector.
摘要翻译：本发明涉及索引包含在多组矢量的一组向量中的输入向量。索引包括在输入向量包含在多个向量集合中的一组或多组向量的预定义组的向量集合中的情况下执行，该特定处理适于在向量集合的预定义组中的向量集合，并且仅适用于包含在具有特征的向量集合中的输入向量的情况。索引还包括在输入向量不包含在预定义向量集合的一组向量中的情况下执行通用处理。本发明还涉及基于与所述目标矢量相关联的索引，对包含在多个向量集合的向量集合中的目标矢量的相应确定。

4. 发明授权

US07680651B2 Signal modification method for efficient coding of speech signals 有权
标题翻译：用于语音信号有效编码的信号修改方法
公开(公告)号：US07680651B2
公开(公告)日：2010-03-16
申请号：US10498254
申请日：2002-12-13
申请人： Mikko Tammi , Milan Jelinek , Claude LaFlamme , Vesa Ruoppila
发明人： Mikko Tammi , Milan Jelinek , Claude LaFlamme , Vesa Ruoppila
IPC分类号： G10L19/00
CPC分类号： G10L19/08
摘要： In accordance with the exemplary embodiments of the invention there is disclosed at least a method and apparatus for determining a long-term-prediction delay parameter characterizing a long term prediction in a technique using signal modification for digitally encoding a sound signal, the sound signal is divided into a series of successive frames, a feature of the sound signal is located in a previous frame, a corresponding feature of the sound signal is located in a current frame, and the long-term-prediction delay parameter is determined for the current frame while mapping, with the long term prediction, the signal feature of the previous frame with the corresponding signal feature of the current frame. Each divided frame of the sound signal is partitioned into a plurality of signal segments, and at least a part of the signal segments of the frame are warped while constraining the warped signal segments inside the frame.
摘要翻译：根据本发明的示例性实施例，至少公开了一种用于在使用用于数字编码声音信号的信号修改的技术的技术中确定表征长期预测的长期预测延迟参数的方法和装置，声音信号是分为一系列连续帧，声信号的特征位于先前帧中，声信号的对应特征位于当前帧中，并且为当前帧确定长期预测延迟参数同时用长期预测将前一帧的信号特征与当前帧的对应信号特征进行映射。声音信号的每个分割帧被划分成多个信号段，并且框架的信号段的至少一部分变形，同时约束框架内的扭曲信号段。

5. 发明申请

US20080004883A1 Scalable audio coding 审中-公开
标题翻译：可扩展音频编码
公开(公告)号：US20080004883A1
公开(公告)日：2008-01-03
申请号：US11479994
申请日：2006-06-30
申请人： Miikka Vilermo , Mikko Tammi
发明人： Miikka Vilermo , Mikko Tammi
IPC分类号： G10L19/00
CPC分类号： G10L19/24
摘要： A method and related apparatus for generating a scalable layered audio stream, whereby the method comprises: encoding an input audio signal with a low bitrate audio encoding technique to generate a base layer of a layered data stream representing the audio signal; and producing a plurality of enhancement layers into the layered data stream, at least one of the enhancement layers comprising a coded version of at least a part of the input audio signal rendering at least one of the lower layers comprising low bitrate audio encoded data redundant for decoding the audio signal.
摘要翻译：一种用于生成可分级分层音频流的方法和相关装置，由此该方法包括：利用低比特率音频编码技术对输入音频信号进行编码，以生成表示音频信号的分层数据流的基本层; 并且将多个增强层产生到所述分层数据流中，所述增强层中的至少一个包括所述输入音频信号的至少一部分的编码版本，所述至少一部分渲染所述低层中的至少一个包括用于解码音频信号。

6. 发明申请

US20100250261A1 Encoder 有权
标题翻译：编码器
公开(公告)号：US20100250261A1
公开(公告)日：2010-09-30
申请号：US12741523
申请日：2007-11-06
申请人： Lasse Laaksonen , Mikko Tammi , Adriana Vasilache , Anssi Ramo
发明人： Lasse Laaksonen , Mikko Tammi , Adriana Vasilache , Anssi Ramo
IPC分类号： G10L19/00
CPC分类号： G10L19/02 , G10L21/038
摘要： An apparatus including at least one processor and at least one memory including computer program code the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to select at least two single frequency components; generate an indicator, the indicator being configured to represent the at least two single frequency components and is configured to be dependent on the frequency separation between the two single frequency components.
摘要翻译：一种装置，包括至少一个处理器和包括计算机程序代码的至少一个存储器的至少一个存储器，所述至少一个存储器和所述计算机程序代码被配置为与所述至少一个处理器一起使所述设备至少选择至少两个单个频率分量; 生成指示符，所述指示符被配置为表示所述至少两个单个频率分量，并且被配置为依赖于所述两个单个频率分量之间的频率间隔。

7. 发明授权

US07676374B2 Low complexity subband-domain filtering in the case of cascaded filter banks 失效
标题翻译：在级联滤波器组的情况下的低复杂度子带域滤波
公开(公告)号：US07676374B2
公开(公告)日：2010-03-09
申请号：US11390742
申请日：2006-03-28
申请人： Mikko Tammi
发明人： Mikko Tammi
IPC分类号： G10L19/00 , G10L19/14
CPC分类号： G10L19/0204
摘要： A filtering method and system for a subband-domain is provided. A first analysis filter bank is configured to divide an input signal into a plurality of subbands. A second analysis filter bank divides one or more of the subbands into a second set of subbands. A modification unit accepts the plurality of subbands, the second set of subbands and modification data and outputs a plurality of modified frequency subbands. A first synthesis filter bank synthesizes the plurality of modified subbands. A filter then filters the plurality of modified subbands and the one or more synthesized modified subbands to obtain a plurality of filtered subbands. A second synthesis filter bank synthesizes the plurality of filtered subbands to obtain an output signal.
摘要翻译：提供了一种子带域的过滤方法和系统。第一分析滤波器组被配置为将输入信号划分成多个子带。第二分析滤波器组将一个或多个子带划分成第二组子带。修改单元接受多个子带，第二组子带和修改数据，并输出多个修改的频率子带。第一合成滤波器组合成多个经修改的子带。然后，滤波器对多个经修改的子带和一个或多个合成的修改的子带进行滤波以获得多个经滤波的子带。第二合成滤波器组合成多个滤波后的子带以获得输出信号。

8. 发明申请

US20050071153A1 Signal modification method for efficient coding of speech signals 有权
标题翻译：用于语音信号有效编码的信号修改方法
公开(公告)号：US20050071153A1
公开(公告)日：2005-03-31
申请号：US10498254
申请日：2002-12-13
申请人： Mikko Tammi , Milan Jelinek , Claude LaFlamme , Vesa Ruoppila
发明人： Mikko Tammi , Milan Jelinek , Claude LaFlamme , Vesa Ruoppila
IPC分类号： G10L19/12 , G10L19/10
CPC分类号： G10L19/08
摘要： For determining a long-term-prediction delay parameter characterizing a long term prediction in a technique using signal modification for digitally encoding a sound signal, the sound signal is divided into a series of successive frames, a feature of the sound signal is located in a previous frame, a corresponding feature of the sound signal is located in a current frame, and the long-term-prediction delay parameter is determined for the current frame while mapping, with the long term prediction, the signal feature of the previous frame with the corresponding signal feature of the current frame. In a signal modification method for implementation into a technique for digitally encoding a sound signal, the sound signal is divided into a series of successive frames, each frame of the sound signal is partitioned into a plurality of signal segments, and at least a part of the signal segments of the frame are warped while constraining the warped signal segments inside the frame. For searching pitch pulses in a sound signal, a residual signal is produced by filtering the sound signal through a linear prediction analysis filter, a weighted sound signal is produced by processing the sound signal through a weighting filter, the weighted sound signal being indicative of signal periodicity, a synthesized weighted sound signal is produced by filtering a synthesized speech signal produced during a last subframe of a previous frame of the sound signal through the weighting filter, a last pitch pulse of the sound signal of the previous frame is located from the residual signal, a pitch pulse prototype of given length is extracted around the position of the last pitch pulse of the sound signal of the previous frame using the synthesized weighted sound signal, and the pitch pulses are located in a current frame using the pitch pulse prototype.
摘要翻译：为了确定在使用用于数字编码声音信号的信号修改的技术中表征长期预测的长期预测延迟参数，声音信号被分成一系列连续的帧，声音信号的特征位于前一帧，声音信号的对应特征位于当前帧中，并且为当前帧确定长期预测延迟参数，同时长期预测将前一帧的信号特征与当前帧的相应信号特征。在用于实现用于对声音信号进行数字编码的技术的信号修改方法中，声音信号被分成一系列连续的帧，声音信号的每个帧被划分为多个信号段，并且至少一部分框架的信号段扭曲，同时约束框架内的翘曲的信号段。为了在声音信号中搜索音调脉冲，通过线性预测分析滤波器对声音信号进行滤波来产生残留信号，通过加权滤波器处理声音信号产生加权声音信号，加权声音信号表示信号通过对通过加权滤波器的声音信号的先前帧的最后一个子帧产生的合成语音信号进行滤波，产生合成加权声音信号，将前一帧的声音信号的最后音调脉冲从剩余的位置信号，使用合成的加权声音信号在前一帧的声音信号的最后音调脉冲的位置周围提取给定长度的音调脉冲原型，并且使用音调脉冲原型将音调脉冲位于当前帧中。

9. 发明授权

US09570081B2 Backwards compatible audio representation 有权
标题翻译：向后兼容音频表示
公开(公告)号：US09570081B2
公开(公告)日：2017-02-14
申请号：US14396638
申请日：2012-04-26
申请人： Miikka Vilermo , Mikko Tammi
发明人： Miikka Vilermo , Mikko Tammi
IPC分类号： G10L19/008 , H04S5/02 , H04S3/00 , H04S3/02 , G10L19/02
CPC分类号： G10L19/008 , G10L19/0204
摘要： It is inter alia disclosed to provide a left signal representation associated with a left audio channel and a right signal representation associated with a right audio channel, each of the left and right signal representations being associated with a plurality of subbands of a frequency range, and to provide directional information associated with at least one subband of the plurality of subbands associated with the left and the right signal representation, the directional information being at least partially indicative of a direction of a sound source with respect to the left and right audio channel.
摘要翻译：公开的是提供与左音频通道相关联的左信号表示和与右音频通道相关联的右信号表示，左和右信号表示中的每一个与频率范围的多个子带相关联，以及提供与左和右信号表示相关联的多个子带中的至少一个子带相关联的方向信息，所述方向信息至少部分地指示声源相对于左和右声道的方向。

10. 发明授权

US09082397B2 Encoder 有权
标题翻译：编码器
公开(公告)号：US09082397B2
公开(公告)日：2015-07-14
申请号：US12741523
申请日：2007-11-06
申请人： Lasse Laaksonen , Mikko Tammi , Adriana Vasilache , Anssi Ramo
发明人： Lasse Laaksonen , Mikko Tammi , Adriana Vasilache , Anssi Ramo
IPC分类号： G10L19/00 , G10L21/02 , H03G7/00 , G10L19/02 , G10L21/038
CPC分类号： G10L19/02 , G10L21/038
摘要： An apparatus including at least one processor and at least one memory including computer program code the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to select at least two single frequency components; generate an indicator, the indicator being configured to represent the at least two single frequency components and is configured to be dependent on the frequency separation between the two single frequency components.
摘要翻译：一种装置，包括至少一个处理器和包括计算机程序代码的至少一个存储器的至少一个存储器，所述至少一个存储器和所述计算机程序代码被配置为与所述至少一个处理器一起使所述设备至少选择至少两个单个频率分量; 生成指示符，所述指示器被配置为表示所述至少两个单个频率分量，并且被配置为依赖于所述两个单个频率分量之间的频率间隔。

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