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1. 发明公开

EP2146344A1 Audio encoding/decoding scheme having a switchable bypass 有权转让
标题翻译： Audiokodierungs - / - dekodierungsschema mit schaltbarerÜberbrückung
公开(公告)号：EP2146344A1
公开(公告)日：2010-01-20
申请号：EP09002270.8
申请日：2009-02-18
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , Voiceage Corporation
发明人： Grill, Bernhard , Bayer, Stefan , Fuchs, Guillaume , Geyersberger, Stefan , Geiger, Ralf , Hilpert, Johannes , Krämer, Ulrich , Lecomte, Jeremie , Multrus, Markus , Neuendorf, Max , Popp, Harald , Rettelbach, Nikolaus , Lefebvre, Roch , Bessette, Bruno , Lapierre, Jimmy , Gournay, Philippe , Salami, Redwan
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用于绕过域转换器的旁路允许生成具有高质量和低比特率的解码音频信号。

2. 发明公开

EP3640941A1 MULTI-RESOLUTION SWITCHED AUDIO ENCODING/DECODING SCHEME 审中-实审转让
公开(公告)号：EP3640941A1
公开(公告)日：2020-04-22
申请号：EP19213835.2
申请日：2009-10-07
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , VoiceAge Corporation
发明人： Neuendorf, Max , Bayer, Stefan , Lecomte, Jérémie , Fuchs, Guillaume , Robillard, Julien , Rettelbach, Nikolaus , Nagel, Frederik , Geiger, Ralf , Multrus, Markus , Grill, Bernhard , Gournay, Philippe , Salami, Redwan
IPC分类号： G10L19/18 , G10L19/02 , G10L19/04
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.

3. 发明公开

EP2144230A1 Low bitrate audio encoding/decoding scheme having cascaded switches 审中-公开
标题翻译： Audiokodierungs- / Audiodekodierungsschema geringer Bitrate mit kaskadierten Schaltvorrichtungen
公开(公告)号：EP2144230A1
公开(公告)日：2010-01-13
申请号：EP09002271.6
申请日：2009-02-18
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , Voiceage Corporation
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 , Krämer, 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，例如频域编码分支，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，用于对诸如第二域中的激励信号的信号进行解码的LPC域解码分支的第二域解码器，以及诸如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。

4. 发明授权

EP2146344B1 Audio encoding/decoding scheme having a switchable bypass 有权转让
标题翻译：音频编码 - / - 解码与切换旁路示意
公开(公告)号：EP2146344B1
公开(公告)日：2016-07-06
申请号：EP09002270.8
申请日：2009-02-18
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Grill, Bernhard , Bayer, Stefan , Fuchs, Guillaume , Geyersberger, Stefan , Geiger, Ralf , Hilpert, Johannes , Krämer, Ulrich , Lecomte, Jeremie , Multrus, Markus , Neuendorf, Max , Popp, Harald , Rettelbach, Nikolaus , Lefebvre, Roch , Bessette, Bruno , Lapierre, Jimmy , Gournay, Philippe , Salami, Redwan
IPC分类号： G10L19/18 , G10L19/16 , G10L19/02 , G10L19/00 , G10L19/008
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.

5. 发明授权

EP2863390B1 System and method for enhancing a decoded tonal sound signal 有权转让
标题翻译：用于增强解码音调声音信号的系统和方法
公开(公告)号：EP2863390B1
公开(公告)日：2018-01-31
申请号：EP15151693.7
申请日：2009-03-05
申请人： VoiceAge Corporation
发明人： Vaillancourt, Tommy , Jelinek, Milan , Malenovsky, Vladimir , Salami, Redwan
IPC分类号： G10L19/26 , G10L25/18
CPC分类号： G10L19/26 , G10L25/18
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.

6. 发明公开

EP2863390A3 System and method for enhancing a decoded tonal sound signal 有权转让
标题翻译：系统和方法，用于增强解码的音调的声音信号
公开(公告)号：EP2863390A3
公开(公告)日：2015-06-10
申请号：EP15151693.7
申请日：2009-03-05
申请人： VoiceAge Corporation
发明人： Vaillancourt, Tommy , Jelinek, Milan , Malenovsky, Vladimir , Salami, Redwan
IPC分类号： G10L19/26 , G10L25/18
CPC分类号： G10L19/26 , G10L25/18
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.

7. 发明公开

EP2863390A2 System and method for enhancing a decoded tonal sound signal 有权转让
标题翻译：系统和Verfahren zur Verbesserung eines dekodierten tonalen Schallsignals
公开(公告)号：EP2863390A2
公开(公告)日：2015-04-22
申请号：EP15151693.7
申请日：2009-03-05
申请人： VoiceAge Corporation
发明人： Vaillancourt, Tommy , Jelinek, Milan , Malenovsky, Vladimir , Salami, Redwan
IPC分类号： G10L19/26 , G10L25/18
CPC分类号： G10L19/26 , G10L25/18
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.
摘要翻译：一种用于响应于接收到的编码比特流来增强由语音专用编解码器的解码器解码的音调声音信号的系统和方法，其中频谱分析仪响应于解码的音调声音信号以产生表示解码的频谱参数音调声信号。响应于由频谱分析仪产生的频谱参数，解码的音调声音信号的低能量频谱区域中的量化噪声被减小。光谱分析仪将由光谱分析得到的光谱分成包括多个频率仓的一组临界频带，并且量化噪声的减法器包括噪声衰减器，其对每个关键频带的解码音调声音信号的频谱进行缩放，每个频率仓，或每个临界频带和频率仓。

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