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1. 发明授权

US06757654B1 Forward error correction in speech coding 有权
标题翻译：语音编码中的前向纠错
公开(公告)号：US06757654B1
公开(公告)日：2004-06-29
申请号：US09569312
申请日：2000-05-11
申请人： Magnus Westerlund , Anders Nohlgren , Jonas Svedberg , Anders Uvliden , Jim Sundqvist
发明人： Magnus Westerlund , Anders Nohlgren , Jonas Svedberg , Anders Uvliden , Jim Sundqvist
IPC分类号： G10L1302
CPC分类号： G10L19/005
摘要： An improved forward error correction (FEC) technique for coding speech data provides an encoder module which primary-encodes an input speech signal using a primary synthesis model to produce primary-encoded data, and redundant-encodes the input speech signal using a redundant synthesis model to produce redundant-encoded data. A packetizer combines the primary-encoded data and the redundant-encoded data into a series of packets and transmits the packets over a packet-based network, such as an Internet Protocol (IP) network. A decoding module primary-decodes the packets using the primary synthesis model, and redundant-decodes the packets using the redundant synthesis model. The technique provides interaction between the primary synthesis model and the redundant synthesis model during and after decoding to improve the quality of a synthesized output speech signal. Such “interaction,” for instance, may take the form of updating states in one model using the other model.
摘要翻译：用于编码语音数据的改进的前向纠错（FEC）技术提供了一种编码器模块，其使用主要合成模型对输入语音信号进行一次编码以产生初始编码数据，并且使用冗余合成模型对输入语音信号进行冗余编码以产生冗余编码数据。分组器将主编码数据和冗余编码数据组合成一系列分组，并通过诸如因特网协议（IP）网络的基于分组的网络传送分组。解码模块使用主合成模型对分组进行主要解码，并使用冗余合成模型对分组进行冗余解码。该技术在解码期间和之后提供主要合成模型和冗余合成模型之间的交互以提高合成输出语音信号的质量。例如，这种“交互”可以采用其他模型在一个模型中更新状态的形式。

2. 发明授权

US07146311B1 CELP encoding/decoding method and apparatus 有权
标题翻译： CELP编码/解码方法和装置
公开(公告)号：US07146311B1
公开(公告)日：2006-12-05
申请号：US09395909
申请日：1999-09-14
申请人： Anders Uvliden , Jonas Svedberg
发明人： Anders Uvliden , Jonas Svedberg
IPC分类号： G10L19/08
CPC分类号： G10L19/22 , G10L2019/0005
摘要： A multi-codebook fixed bitrate CELP signal block encoder/decoder includes a codebook selector (22) for selecting, for each signal block, a corresponding codebook identification in accordance with a deterministic selection procedure that is independent of signal type. Included are also means for encoding/decoding each signal block by using a codebook having the selected codebook identification.
摘要翻译：多码本固定位速率CELP信号块编码器/解码器包括码本选择器（22），用于根据独立于信号类型的确定性选择过程为每个信号块选择相应的码本识别。包括也是通过使用具有所选码本识别的码本来对每个信号块进行编码/解码的装置。

3. 发明授权

US07194408B2 CELP encoding/decoding method and apparatus 有权
标题翻译： CELP编码/解码方法和装置
公开(公告)号：US07194408B2
公开(公告)日：2007-03-20
申请号：US11007373
申请日：2004-12-08
申请人： Anders Uvliden , Jonas Svedberg
发明人： Anders Uvliden , Jonas Svedberg
IPC分类号： G10L19/08
CPC分类号： G10L19/22 , G10L2019/0005
摘要： A multi-codebook fixed bitrate CELP signal block encoder/decoder includes a codebook selector (22) for selecting, for each signal block, a corresponding codebook identification in accordance with a deterministic selection procedure that is independent of signal type. Included are also means for encoding/decoding each signal block by using a codebook having the selected codebook identification.
摘要翻译：多码本固定位速率CELP信号块编码器/解码器包括码本选择器（22），用于根据独立于信号类型的确定性选择过程为每个信号块选择相应的码本识别。包括也是通过使用具有所选码本识别的码本来对每个信号块进行编码/解码的装置。

4. 发明授权

US06275798B1 Speech coding with improved background noise reproduction 有权
标题翻译：具有改进的背景噪声再现的语音编码
公开(公告)号：US06275798B1
公开(公告)日：2001-08-14
申请号：US09154361
申请日：1998-09-16
申请人： Ingemar Johansson , Jonas Svedberg , Anders Uvliden
发明人： Ingemar Johansson , Jonas Svedberg , Anders Uvliden
IPC分类号： G10L1520
CPC分类号： G10L19/012 , G10L19/083
摘要： In producing an approximation of an original speech signal from encoded information about the original speech signal, current parameters associated with a current segment of the original speech signal are determined from the encoded information. Reproduction of a noise component of the original speech signal is improved by using at least one of the current parameters and corresponding previous parameters respectively associated with previous segments of the original speech signal to produce a modified parameter. The modified parameter is then used to produce an approximation of the current segment of the original speech signal.
摘要翻译：在从关于原始语音信号的编码信息产生原始语音信号的近似值时，根据编码信息确定与原始语音信号的当前段相关联的当前参数。通过使用分别与原始语音信号的先前片段相关联的当前参数和对应的先前参数中的至少一个来产生修改的参数来改进原始语音信号的噪声分量的再现。然后，修改的参数用于产生原始语音信号的当前段的近似。

5. 发明申请

US20050096901A1 CELP encoding/decoding method and apparatus 有权
标题翻译： CELP编码/解码方法和装置
公开(公告)号：US20050096901A1
公开(公告)日：2005-05-05
申请号：US11007373
申请日：2004-12-08
申请人： Anders Uvliden , Jonas Svedberg
发明人： Anders Uvliden , Jonas Svedberg
IPC分类号： G10L19/22 , H03M7/30 , H03M7/36 , G10L19/04
CPC分类号： G10L19/22 , G10L2019/0005
摘要： A multi-codebook fixed bitrate CELP signal block encoder/decoder includes a codebook selector (22) for selecting, for each signal block, a corresponding codebook identification in accordance with a deterministic selection procedure that is independent of signal type. Included are also means for encoding/decoding each signal block by using a codebook having the selected codebook identification.
摘要翻译：多码本固定位速率CELP信号块编码器/解码器包括码本选择器（22），用于根据独立于信号类型的确定性选择过程为每个信号块选择相应的码本识别。包括也是通过使用具有所选码本识别的码本来对每个信号块进行编码/解码的装置。

6. 发明授权

US06424938B1 Complex signal activity detection for improved speech/noise classification of an audio signal 有权
标题翻译：用于改善音频信号的语音/噪声分类的复杂信号活动检测
公开(公告)号：US06424938B1
公开(公告)日：2002-07-23
申请号：US09434787
申请日：1999-11-05
申请人： Ingemar Johansson , Erik Ekudden , Jonas Svedberg , Anders Uvliden
发明人： Ingemar Johansson , Erik Ekudden , Jonas Svedberg , Anders Uvliden
IPC分类号： G10L1908
CPC分类号： G10L25/78 , G10L2025/783
摘要： Perceptually relevant non-speech information can be preserved during encoding of an audio signal by determining whether the audio signal includes such information. If so, a speech/noise classification of the audio signal is overriden to prevent misclassification of the audio signal as noise.
摘要翻译：通过确定音频信号是否包括这样的信息，可以在音频信号的编码期间保留感知相关的非语音信息。如果是这样，则音频信号的语音/噪声分类被覆盖以防止音频信号被错误地分类为噪声。

7. 发明授权

US07346110B2 Multi-channel signal encoding and decoding 有权
标题翻译：多通道信号编码和解码
公开(公告)号：US07346110B2
公开(公告)日：2008-03-18
申请号：US10380422
申请日：2001-08-29
申请人： Tor Björn Minde , Arne Steinarson , Anders Uvliden
发明人： Tor Björn Minde , Arne Steinarson , Anders Uvliden
IPC分类号： H04B1/66 , G10L19/04
CPC分类号： G10L19/12
摘要： A multi-part fixed codebook includes both individual fixed codebooks for each channel and a shared fixed codebook. Although the shared fixed codebook is common to all channels, the channels are associated with individual lags. Furthermore, the individual fixed codebooks are associated with individual gains, and the individual lags are also associated with individual gains. The excitation from each individual fixed codebook is added to the corresponding excitation (a shared codebook vector, but individual lags and gains for each channel) from the shared fixed codebook.
摘要翻译：多部分固定码本包括用于每个频道的单个固定码本和共享固定码本。虽然共享的固定码本对于所有频道是共同的，但这些频道与个别滞后相关联。此外，个人固定码本与个人收益相关联，个别滞后也与个人收益相关联。来自共享的固定码本的每个固定码本的激励被添加到相应的激励（共享码本向量，但每个信道的个体滞后和增益）。

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