专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2010003564A1 LOW BITRATE AUDIO ENCODING/DECODING SCHEME HAVING CASCADED SWITCHES 审中-公开
标题翻译：低成本音频编码/解码方案具有CASCADED开关
公开(公告)号：WO2010003564A1
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004652
申请日：2009-06-26
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V , VOICEAGE CORPORATION , GRILL, Bernhard , LEFEBVRE, Roch , BESSETTE, Bruno , LAPIERRE, Jimmy , GOURNAY, Philippe , SALAMI, Redwan , BAYER, Stefan , FUCHS, Guillaume , GEYERSBERGER, Stefan , GEIGER, Ralf , HILPERT, Johannes , KRAEMER, Ulrich , LECOMTE, Jeremie , MULTRUS, Markus , NEUENDORF, Max , POPP, Harald , RETTELBACH, Nikolaus
发明人： GRILL, Bernhard , LEFEBVRE, Roch , BESSETTE, Bruno , LAPIERRE, Jimmy , GOURNAY, Philippe , SALAMI, Redwan , BAYER, Stefan , FUCHS, Guillaume , GEYERSBERGER, Stefan , GEIGER, Ralf , HILPERT, Johannes , KRAEMER, Ulrich , LECOMTE, Jeremie , MULTRUS, Markus , NEUENDORF, Max , POPP, Harald , RETTELBACH, Nikolaus
IPC分类号： G10L19/14
CPC分类号： G10L19/008 , G10L19/0017 , G10L19/0212 , G10L19/173 , G10L19/18 , G10L2019/0008
摘要： An audio encoder comprises a first information sink oriented encoding branch such as a spectral domain encoding branch, a second information source or SNR oriented encoding branch such as an LPC-domain encoding branch, and a switch for switching between the first encoding branch and the second encoding branch, wherein the second encoding branch comprises a converter into a specific domain different from the spectral domain such as an LPC analysis stage generating an excitation signal, and wherein the second encoding branch furthermore comprises a specific domain coding branch such as LPC domain processing branch, and a specific spectral domain coding branch such as LPC spectral domain processing branch, and an additional switch for switching between the specific domain coding branch and the specific spectral domain coding branch. An audio decoder comprises a first domain decoder such as a spectral domain decoding branch, a second domain decoder such as an LPC domain decoding branch for decoding a signal such as an excitation signal in the second domain, and a third domain decoder such as an LPC-spectral decoder branch and two cascaded switches for switching between the decoders.
摘要翻译：音频编码器包括第一信息宿定向编码分支，诸如频域编码分支，第二信息源或SNR定向编码分支，诸如LPC域编码分支，以及用于在第一编码分支与第二编码分支之间进行切换的开关编码分支，其中所述第二编码分支包括转换器到不同于所述频域的特定域，例如产生激励信号的LPC分析阶段，并且其中所述第二编码分支还包括特定域编码分支，诸如LPC域处理分支，以及诸如LPC频域处理分支的特定频域编码分支，以及用于在特定编码分支和特定频域编码分支之间切换的附加开关。音频解码器包括诸如频域解码分支的第一域解码器，诸如LPC域解码分支的第二域解码器，用于对诸如第二域中的激励信号的信号进行解码，以及第三域解码器，诸如LPC 光谱解码器分支和两个级联开关，用于在解码器之间切换。

2. 发明申请

WO2008049221A1 METHOD AND DEVICE FOR CODING TRANSITION FRAMES IN SPEECH SIGNALS 审中-公开
标题翻译：用于编码语音信号中的过渡帧的方法和装置
公开(公告)号：WO2008049221A1
公开(公告)日：2008-05-02
申请号：PCT/CA2007/001896
申请日：2007-10-24
申请人： VOICEAGE CORPORATION , EKSLER, Vaclav , JELINEK, Milan , SALAMI, Redwan
发明人： EKSLER, Vaclav , JELINEK, Milan , SALAMI, Redwan
IPC分类号： G01L19/08 , G01L19/12
CPC分类号： G10L19/08 , G10L19/12
摘要： There is provided a transition mode device and method for use in a predictive-type sound signal codec for producing a transition mode excitation replacing an adaptive codebook excitation in a transition frame and/or a frame following the transition in the sound signal, comprising an input for receiving a codebook index and a transition mode codebook for generating a set of codevectors independent from past excitation. The transition mode codebook is responsive to the index for generating, in the transition frame and/or frame following the transition, one of the codevectors of the set corresponding to the transition mode excitation. There is also provided an encoding device and method and a decoding device and method using the above described transition mode device and method.
摘要翻译：提供了一种用于预测型声音信号编解码器中的过渡模式装置和方法，用于产生在过渡帧和/或声音信号中的转变之后的帧中替换自适应码本激励的转换模式激励，包括输入用于接收码本索引和用于生成独立于过去激励的一组码矢量的转换模式码本。转换模式码本响应于索引，用于在转换之后的转换帧和/或帧中生成对应于转换模式激励的集合的码矢量之一。还提供了一种编码装置和方法以及使用上述转换模式装置和方法的解码装置和方法。

3. 发明申请

WO2004006226A1 METHOD AND DEVICE FOR EFFICIENT IN-BAND DIM-AND-BURST SIGNALING AND HALF-RATE MAX OPERATION IN VARIABLE BIT-RATE WIDEBAND SPEECH CODING FOR CDMA WIRELESS SYSTEMS 审中-公开
标题翻译：用于CDMA无线系统的可变比特率宽带语音编码中有效的带内DIM-AND-BURST信令和半速率最大操作的方法和设备
公开(公告)号：WO2004006226A1
公开(公告)日：2004-01-15
申请号：PCT/CA2003/000980
申请日：2003-06-27
申请人： VOICEAGE CORPORATION , JELINEK, Milan , SALAMI, Redwan
发明人： JELINEK, Milan , SALAMI, Redwan
IPC分类号： G10L19/14
CPC分类号： G10L19/24
摘要： In the method and device for interoperating a first station using a first communication scheme and comprising a first coder and a first decoder with a second station using a second communication scheme and comprising a second coder and a second decoder, communication between the first and second stations is conducted by transmitting signal-coding parameters related to a sound signal from the coder of one of the first and second stations to the decoder of the other station. The sound signal is classified to determine whether the signal-coding parameters should be transmitted from the coder of one station to the decoder of the other station using a first communication mode in which full bit rate is used for transmission of the signal-coding parameters. When classification of the sound signal determines that the signal-coding parameters should be transmitted using the first communication mode and when a request to transmit the signal-coding parameters from the coder of one station to the decoder of the other station using a second communication mode designed to reduce bit rate during transmission of the signal-coding parameters is received, a portion of the signal-coding parameters from the coder one station is dropped and the remaining signal-coding parameters are transmitting to the decoder of the other station using the second communication mode. The dropped portion of the signal-coding parameters are regenerated before the decoder of the other station decodes the signal-coding parameters.
摘要翻译：在用于使用第一通信方案并且包括第一编码器和第一解码器以及使用第二通信方案的第二站来互操作第一站并且包括第二编码器和第二解码器的方法和设备中，第一和第二站之间的通信是通过将与来自第一和第二站之一的编码器的声音信号有关的信号编码参数发送到另一个站的解码器来进行的。声音信号被分类以确定信号编码参数是否应该使用全比特率被用于传输信号编码参数的第一通信模式从一个站的编码器传送到另一个站的解码器。当声音信号的分类确定应当使用第一通信模式传输信号编码参数时以及当使用第二通信模式从一个站的编码器传输信号编码参数到另一个站的解码器的请求时被设计成在信号编码参数的传输期间降低比特率被接收，来自编码器一站的信号编码参数的一部分被丢弃，并且其余的信号编码参数被传输到另一站的解码器，使用第二通讯模式。信号编码参数的丢失部分在另一个站的解码器解码信号编码参数之前被重新生成。

4. 发明申请

WO2015157843A1 METHODS, ENCODER AND DECODER FOR LINEAR PREDICTIVE ENCODING AND DECODING OF SOUND SIGNALS UPON TRANSITION BETWEEN FRAMES HAVING DIFFERENT SAMPLING RATES 审中-公开
标题翻译：方法，编码器和解码器用于线性预测编码和解码具有不同采样率的帧之间的转换的声音信号
公开(公告)号：WO2015157843A1
公开(公告)日：2015-10-22
申请号：PCT/CA2014/050706
申请日：2014-07-25
申请人： VOICEAGE CORPORATION
发明人： SALAMI, Redwan , EKSLER, Vaclav
IPC分类号： G10L19/12 , G10L19/06 , G10L19/26
CPC分类号： G10L19/12 , G10L19/06 , G10L19/07 , G10L19/167 , G10L19/173 , G10L19/24 , G10L19/26 , G10L21/038 , G10L25/06 , G10L2019/0002 , G10L2019/0004 , G10L2019/0016
摘要： Methods, an encoder and a decoder are configured for transition between frames with different internal sampling rates. Linear predictive (LP) filter parameters are converted from a sampling rate S1 to a sampling rate S2. A power spectrum of a LP synthesis filter is computed, at the sampling rate S1, using the LP filter parameters. The power spectrum of the LP synthesis filter is modified to convert it from the sampling rate S1 to the sampling rate S2. The modified power spectrum of the LP synthesis filter is inverse transformed to determine autocorrelations of the LP synthesis filter at the sampling rate S2. The autocorrelations are used to compute the LP filter parameters at the sampling rate S2.
摘要翻译：方法，编码器和解码器被配置用于在具有不同内部采样率的帧之间转换。线性预测（LP）滤波器参数从采样率S1转换为采样率S2。使用LP滤波器参数以采样率S1计算LP合成滤波器的功率谱。修改LP合成滤波器的功率谱，将其从采样率S1转换为采样率S2。对LP合成滤波器的修正功率谱进行逆变换，以采样速率S2确定LP合成滤波器的自相关性。自相关用于以采样率S2计算LP滤波器参数。

5. 发明申请

WO2010006717A1 AUDIO ENCODING/DECODING SCHEME HAVING A SWITCHABLE BYPASS 审中-公开
标题翻译：具有可切换旁路的音频编码/解码方案
公开(公告)号：WO2010006717A1
公开(公告)日：2010-01-21
申请号：PCT/EP2009/004875
申请日：2009-07-06
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , VOICEAGE CORPORATION , GRILL, Bernhard , BAYER, Stefan , FUCHS, Guillaume , GEYERSBERGER, Stefan , GEIGER, Ralf , HILPERT, Johannes , KRAEMER, Ulrich , LECOMTE, Jeremie , MULTRUS, Markus , NEUENDORF, Max , POPP, Harald , RETTELBACH, Nikolaus , LEFEBVRE, Roch , BESSETTE, Bruno , LAPIERRE, Jimmy , SALAMI, Redwan , GOURNAY, Philippe
发明人： GRILL, Bernhard , BAYER, Stefan , FUCHS, Guillaume , GEYERSBERGER, Stefan , GEIGER, Ralf , HILPERT, Johannes , KRAEMER, Ulrich , LECOMTE, Jeremie , MULTRUS, Markus , NEUENDORF, Max , POPP, Harald , RETTELBACH, Nikolaus , LEFEBVRE, Roch , BESSETTE, Bruno , LAPIERRE, Jimmy , SALAMI, Redwan , GOURNAY, Philippe
IPC分类号： G10L19/14
CPC分类号： G10L19/173 , G10L19/0017 , G10L19/008 , G10L19/0212 , G10L19/18 , G10L2019/0008
摘要： An apparatus for encoding comprises a first domain Converter (510), a switchable bypass (50), a second domain Converter (410), a first processor (420) and a second processor (520) to obtain an encoded audio signal having different signal portions represented by coded data in different domains, which have been coded by different coding algorithms. Corresponding decoding stages in the decoder together with a bypass for bypassing a domain Converter allow the generation of a decoded audio signal with high quality and low bit rate.
摘要翻译：一种用于编码的装置，包括第一域转换器（510），可切换旁路（50），第二域转换器（410），第一处理器（420）和第二处理器（520），以获得具有不同信号的编码音频信号由不同域中的编码数据表示的部分，其已经由不同的编码算法编码。解码器中的对应的解码级以及绕过域转换器的旁路允许产生具有高质量和低比特率的解码音频信号。

6. 发明申请

WO2009033288A1 METHOD AND DEVICE FOR FAST ALGEBRAIC CODEBOOK SEARCH IN SPEECH AND AUDIO CODING 审中-公开
标题翻译：用于在语音和音频编码中快速查看代码的方法和设备
公开(公告)号：WO2009033288A1
公开(公告)日：2009-03-19
申请号：PCT/CA2008/001620
申请日：2008-09-11
申请人： VOICEAGE CORPORATION , SALAMI, Redwan , EKSLER, Vaclav , JELINEK, Milan
发明人： SALAMI, Redwan , EKSLER, Vaclav , JELINEK, Milan
IPC分类号： G10L19/00 , G10L19/12 , H04M3/56 , H04N7/15
CPC分类号： G10L19/107
摘要： A method and device for searching an algebraic codebook during encoding of a sound signal, wherein the algebraic codebook comprises a set of codevectors formed of a number of pulse positions and a number of pulses distributed over the pulse positions. In the algebraic codebook searching method and device, a reference signal for use in searching the algebraic codebook is calculated. In a first stage, a position of a first pulse is determined in relation with the reference signal and among the number of pulse positions. In each of a number of stages subsequent to the first stage, (a) an algebraic codebook gain is recomputed, (b) the reference signal is updated using the recomputed algebraic codebook gain and (c ) a position of another pulse is determined in relation with the updated reference signal and among the number of pulse positions. A codevector of the algebraic codebook is computed using the positions of the pulses determined in the first and subsequent stages, wherein a number of the first and subsequent stages corresponds to the number of pulses in the codevectors of the algebraic codebook.
摘要翻译：一种用于在编码声音信号期间搜索代数码本的方法和装置，其中代数码本包括由多个脉冲位置组成的一组码矢量和分布在脉冲位置上的脉冲数。在代数码本搜索方法和装置中，计算用于搜索代数码本的参考信号。在第一阶段中，相对于参考信号和脉冲位置数确定第一脉冲的位置。在第一阶段之后的多个阶段的每个阶段中，（a）代数码本增益被重新计算，（b）使用重新计算的代数码本增益来更新参考信号，并且（c）另一个脉冲的位置被确定具有更新的参考信号和脉冲位置的数量。使用在第一级和后级中确定的脉冲的位置来计算代数码本的码矢量，其中第一级和后级的数量对应于代数码本的代码矢量中的脉冲数。

7. 发明申请

WO2008151410A1 DEVICE AND METHOD FOR NOISE SHAPING IN A MULTILAYER EMBEDDED CODEC INTEROPERABLE WITH THE ITU-T G.711 STANDARD 审中-公开
标题翻译：与ITU-T G.711标准相互配合的多层嵌入式编解码器中的噪声形成装置和方法
公开(公告)号：WO2008151410A1
公开(公告)日：2008-12-18
申请号：PCT/CA2007/002373
申请日：2007-12-28
申请人： VOICEAGE CORPORATION , BESSETTE, Bruno , LAPIERRE, Jimmy , MALENOVSKY, Vladimir , LEFEBVRE, Roch , SALAMI, Redwan
发明人： BESSETTE, Bruno , LAPIERRE, Jimmy , MALENOVSKY, Vladimir , LEFEBVRE, Roch , SALAMI, Redwan
IPC分类号： G10L19/00 , G10L21/02
CPC分类号： G10L19/26 , G10L19/005 , G10L19/24 , G10L25/93
摘要： A device and method for shaping noise during encoding of an input sound signal comprise pre-emphasizing the input signal or a decoded signal from a given sound signal codec to produce a pre-emphasized signal, computing a filter transfer function based on the pre-emphasized signal, and shaping the noise by filtering the noise through the transfer function to produce a shaped noise signal, wherein the noise shaping comprises producing a noise feedback. A device and method for noise shaping in a multilayer codec, including at least Layer 1 and 2, comprise: at an encoder, producing an encoded sound signal in Layer 1 including Layer 1 noise shaping, and producing a Layer 2 enhancement signal; at a decoder, decoding the Layer 1 encoded sound signal to produce a synthesis signal, decoding the enhancement signal, computing a filter transfer function based on the synthesis signal, filtering the enhancement signal through the transfer function to produce a Layer 2 filtered enhancement signal, and adding the filtered enhancement signal to the synthesis signal to produce an output signal including contributions from Layer 1 and 2.
摘要翻译：用于在编码输入声音信号期间整形噪声的装置和方法包括预先强调来自给定声音信号编解码器的输入信号或解码信号以产生预加重信号，基于预先强调的信号计算滤波器传递函数信号和整形噪声，通过传递函数对噪声进行滤波以产生成形噪声信号，其中噪声整形包括产生噪声反馈。包括至少第1层和第2层的多层编解码器中的噪声整形的装置和方法包括：在编码器处，产生包括层1噪声整形的层1中的编码声音信号，并产生第2层增强信号; 在解码器处，解码第1层编码声音信号以产生合成信号，对增强信号进行解码，基于合成信号计算滤波器传递函数，通过传递函数对增强信号进行滤波，以产生第2层滤波的增强信号，并将经滤波的增强信号加到合成信号上以产生包括来自层1和2的贡献的输出信号。

8. 发明申请

WO2010040522A3 MULTI-RESOLUTION SWITCHED AUDIO ENCODING/DECODING SCHEME 审中-公开
公开(公告)号：WO2010040522A3
公开(公告)日：2010-04-15
申请号：PCT/EP2009/007205
申请日：2009-10-07
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E. V. , VOICEAGE CORPORATION , NEUENDORF, Max , BAYER, Stefan , LECOMTE, Jérémie , FUCHS, Guillaume , ROBILLIARD, JuIien , RETTELBACH, Nikolaus , NAGEL, Frederik , GEIGER, RaIf , MULTRUS, Markus , GRILL, Bernhard , GOURNAY, Philippe , SALAMI, Redwan
发明人： NEUENDORF, Max , BAYER, Stefan , LECOMTE, Jérémie , FUCHS, Guillaume , ROBILLIARD, JuIien , RETTELBACH, Nikolaus , NAGEL, Frederik , GEIGER, RaIf , MULTRUS, Markus , GRILL, Bernhard , GOURNAY, Philippe , SALAMI, Redwan
IPC分类号： G01L19/02 , G10L19/14
摘要： An audio encoder for encoding an audio signal comprises a first coding branch (400), the first coding branch comprising a first converter (410) for converting a signal from a time domain into a frequency domain. Furthermore, the audio encoder comprises a second coding branch (500) comprising a second time/frequency converter (523). Additionally, a signal analyzer (300/525) for analyzing the audio signal is provided. The signal analyzer, on the hand, determines whether an audio portion is effective in the encoder output signal as a first encoded signal from the first encoding branch or as a second encoded signal from a second encoding branch. On the other hand, the signal analyzer determines a time/frequency resolution to be applied by the converters (410, 523) when generating the encoded signals. An output interface includes, in addition to the first encoded signal and the second encoded signal, a resolution information identifying the resolution used by the first time/frequency converter and used by the second time/frequency converter.

9. 发明申请

WO2010003254A1 MULTI-REFERENCE LPC FILTER QUANTIZATION AND INVERSE QUANTIZATION DEVICE AND METHOD 审中-公开
标题翻译：多参考LPC滤波器定量和反相量化设备及方法
公开(公告)号：WO2010003254A1
公开(公告)日：2010-01-14
申请号：PCT/CA2009/000981
申请日：2009-07-10
申请人： VOICEAGE CORPORATION , GOURNAY, Philippe , BESSETTE, Bruno , SALAMI, Redwan
发明人： GOURNAY, Philippe , BESSETTE, Bruno , SALAMI, Redwan
IPC分类号： G10L19/12
CPC分类号： G10L19/06 , G10L19/18 , H03M7/3082
摘要： A multi-reference quantization device and method for quantizing an input LPC filter, comprises a plurality of differential quantizers using respective, different references, and a selector of a reference amongst the different references of the differential quantizers using a reference selection criterion. The input LPC filter is differentially quantized by the differential quantizer using the selected reference. A device and method for inverse quantizing a multi-reference differentially quantized LPC filter extracted from a bitstream, comprises an extractor from the bitstream of information about a reference amongst a plurality of possible references used for quantizing the multi-reference differentially quantized LPC filter, and a differential inverse quantizer using the reference corresponding to the extracted reference information to inverse quantize the multi-reference differentially quantized LPC filter.
摘要翻译：用于量化输入LPC滤波器的多参考量化装置和方法包括使用各自不同参考的多个差分量化器和使用参考选择准则的差分量化器的不同参考中的参考选择器。输入LPC滤波器通过使用所选参考的差分量化器进行差分量化。一种用于对从比特流提取的多参考差分量化LPC滤波器进行逆量化的装置和方法，包括来自比特流的提取器，该信息涉及用于量化多参考差分量化LPC滤波器的多个可能参考中的参考，以及使用对应于所提取的参考信息的参考来对多参考差分量化LPC滤波器进行逆量化的差分逆量化器。

10. 发明申请

WO2009109050A8 SYSTEM AND METHOD FOR ENHANCING A DECODED TONAL SOUND SIGNAL 审中-公开
公开(公告)号：WO2009109050A8
公开(公告)日：2009-09-11
申请号：PCT/CA2009/000276
申请日：2009-03-05
申请人： VOICEAGE CORPORATION , VAILLANCOURT, Tommy , JELINEK, Milan , MALENOVSKY, Vladimir , SALAMI, Redwan
发明人： VAILLANCOURT, Tommy , JELINEK, Milan , MALENOVSKY, Vladimir , SALAMI, Redwan
IPC分类号： G10L21/02 , G10L19/12
摘要： A system and method for enhancing a tonal sound signal decoded by a decoder of a speech-specific codec in response to a received coded bit stream, in which a spectral analyser is responsive to the decoded tonal sound signal to produce spectral parameters representative of the decoded tonal sound signal. A quantization noise in low-energy spectral regions of the decoded tonal sound signal is reduced in response to the spectral parameters produced by the spectral analyser. The spectral analyser divides a spectrum resulting from spectral analysis into a set of critical frequency bands each comprising a number of frequency bins, and the reducer of quantization noise comprises a noise attenuator that scales the spectrum of the decoded tonal sound signal per critical frequency band, per frequency bin, or per both critical frequency band and frequency bin.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式