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 无效转让
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. 发明公开

EP3742444A1 AUDIO ENCODER, AUDIO DECODER AND RELATED METHODS USING TWO-CHANNEL PROCESSING WITHIN AN INTELLIGENT GAP FILLING FRAMEWORK 审中-公开
公开(公告)号：EP3742444A1
公开(公告)日：2020-11-25
申请号：EP20176783.7
申请日：2014-07-15
申请人： FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V.
发明人： Disch, Sascha , Nagel, Frederik , Geiger, Ralf , Thoshkahna, Balaji Nagendran , Schmidt, Konstantin , Bayer, Stefan , Neukam, Christian , Edler, Bernd , Helmrich, Christian
IPC分类号： G10L21/0388 , G10L19/02
摘要： An apparatus for generating a decoded two-channel signal, comprises: an audio processor (802) for decoding an encoded two-channel signal to obtain a first set of first spectral portions; a parametric decoder (804) for providing parametric data for a second set of second spectral portions and a two-channel identification identifying either a first or a second different two-channel representation for the second spectral portions; and a frequency regenerator (806) for regenerating a second spectral portion depending on a first spectral portion of the first set of first spectral portions, the parametric data for the second portion and the two-channel identification for the second portion.

5. 发明公开

EP3002750A1 AUDIO ENCODER AND DECODER FOR ENCODING AND DECODING AUDIO SAMPLES 有权
标题翻译：用于编码和解码音频样本的音频编码器和解码器
公开(公告)号：EP3002750A1
公开(公告)日：2016-04-06
申请号：EP15193588.9
申请日：2009-06-26
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Lecomte, Jérémie , Gournay, Philippe , Bayer, Stefan , Grill, Bernhard , Multrus, Markus , Bessette, Bruno
IPC分类号： G10L19/022 , G10L19/20
CPC分类号： G10L19/20 , G10L19/022
摘要： An audio encoder (100) for encoding audio samples, comprising a first time domain aliasing introducing encoder (110) for decoding audio samples in a first encoding domain, the first time domain aliasing introducing encoder (110) having a first framing rule, a start window and a stop window. The audio encoder (100) further comprises a second encoder (120) for encoding samples in a second encoding domain, the second encoder (120) having a predetermined frame size number of audio samples, and a coding warm-up period number of audio samples, the second encoder (120) having a different second framing rule, a frame of the second encoder (120) being an encoded representation of a number of timely subsequent audio samples, the number being equal to the predetermined frame size number of audio samples. The audio encoder (100) further comprises a controller (130) switching from the first encoder (110) to the second encoder (120) in response to characteristic of the audio samples, and for modifying the second framing rule in response to switching from the first encoder (110) to the second encoder (120) or for modifying the start window or the stop window of the first encoder (110), wherein the second framing rule remains unmodified.
摘要翻译：一种用于对音频样本进行编码的音频编码器（100），包括：第一时域混叠引入编码器（110），用于对第一编码域中的音频样本进行解码;第一时域混叠引入编码器（110），具有第一成帧规则; 窗口和停止窗口。音频编码器（100）还包括用于对第二编码域中的采样进行编码的第二编码器（120），第二编码器（120）具有预定帧大小数量的音频采样以及音频采样的编码预热时段数量，所述第二编码器（120）具有不同的第二成帧规则，所述第二编码器（120）的帧是多个及时后续音频样本的编码表示，所述数量等于所述预定帧大小数量的音频样本。音频编码器（100）还包括响应于音频采样的特性从第一编码器（110）切换到第二编码器（120）的控制器（130），以及响应于从第一编码器第一编码器（110）发送到第二编码器（120）或用于修改第一编码器（110）的开始窗口或停止窗口，其中第二成帧规则保持不变。

6. 发明公开

EP2107556A1 Audio transform coding using pitch correction 审中-公开
标题翻译：改造Basierte Audiokodierung手套Grundfrequenzkorrektur
公开(公告)号：EP2107556A1
公开(公告)日：2009-10-07
申请号：EP08021298.8
申请日：2008-12-08
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Edler, Bernd , Disch, Sascha , Geiger, Ralf , Bayer, Stefan , Kraemer, Ulrich , Fuchs, Guillaume , Neuendorf, Max , Multrus, Markus , Schuller, Gerald , Popp, Harald
IPC分类号： G10L19/02
CPC分类号： G10L19/0212 , G10L19/022
摘要： A processed representation of an audio signal having a sequence of frames is generated by sampling the audio signal within a first and a second frame of the sequence of frames, the second frame following the first frame, the sampling using information on a pitch contour of the first and the second frame to derive a first sampled representation. The audio signal is sampled within the second and the third frame, the third frame following the second frame in the sequence of frames. The sampling uses the information on the pitch contour of the second frame and information on a pitch contour of the third frame to derive a second sampled representation. A first scaling window is derived for the first sampled representation and a second scaling window is derived for the second sampled representation, the scaling windows depending on the samplings applied to derive the first sampled representations or the second sampled representation.
摘要翻译：通过对帧序列的第一帧和第二帧中的音频信号进行采样，在第一帧之后的第二帧，利用关于帧的轮廓轮廓的信息进行采样来生成具有帧序列的音频信号的处理表示第一和第二帧以得出第一采样表示。音频信号在第二帧和第三帧中采样，第三帧在帧序列中的第二帧之后。采样使用关于第二帧的音调轮廓的信息和关于第三帧的音调轮廓的信息来导出第二采样表示。对于第一采样表示导出第一缩放窗口，并且针对第二采样表示导出第二缩放窗口，缩放窗口取决于应用于导出第一采样表示或第二采样表示的采样。

7. 发明公开

EP3503097A3 APPARATUS AND METHOD FOR ENCODING OR DECODING A MULTI-CHANNEL SIGNAL USING SPECTRAL-DOMAIN RESAMPLING 有权转让
公开(公告)号：EP3503097A3
公开(公告)日：2019-07-03
申请号：EP19157001.9
申请日：2017-01-20
申请人： FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V.
发明人： Fuchs, Guillaume , Ravelli, Emmanuel , Multrus, Markus , Schnell, Markus , Döhla, Stefan , Dietz, Martin , Markovic, Goran , Fotopoulou, Eleni , Bayer, Stefan , Jaegers, Wolfgang
IPC分类号： G10L19/008 , G10L19/02 , G10L19/022
摘要： An apparatus for encoding a multi-channel signal comprising at least two channels, comprises: a time-spectral converter (1000) for converting sequences of blocks of sample values of the at least two channels into a frequency domain representation having sequences of blocks of spectral values for the at least two channels, wherein a block of sampling values has an associated input sampling rate, and a block of spectral values of the sequences of blocks of spectral values has spectral values up to a maximum input frequency (1211) being related to the input sampling rate; a multi-channel processor (1010) for applying a joint multi-channel processing to the sequences of blocks of spectral values or to resampled sequences of blocks of spectral values to obtain at least one result sequence of blocks of spectral values comprising information related to the at least two channels; a spectral domain resampler (1020) for resampling the blocks of the result sequences in the frequency domain or for resampling the sequences of blocks of spectral values for the at least two channels in the frequency domain to obtain a resampled sequence of blocks of spectral values, wherein a block of the resampled sequence of blocks of spectral values has spectral values up to a maximum output frequency (1231, 1221) being different from the maximum input frequency (1211); a spectral-time converter for converting the resampled sequence of blocks of spectral values into a time domain representation or for converting the result sequence of blocks of spectral values into a time domain representation comprising an output sequence of blocks of sampling values having associated an output sampling rate being different from the input sampling rate; and a core encoder (1040) for encoding the output sequence of blocks of sampling values to obtain an encoded multi-channel signal (1510).

8. 发明授权

EP2214164B1 Audio decoder, methods for decoding an audio signal and computer program 有权
标题翻译：音频解码器，解码音频信号的方法和计算机程序
公开(公告)号：EP2214164B1
公开(公告)日：2017-08-02
申请号：EP10152001.3
申请日：2010-01-28
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Neuendorf, Max , Lecomte, Jérémie , Multrus, Markus , Bayer, Stefan , Nagel, Frederik , Fuchs, Guillaume , Robilliard, Julien , Rettelbach, Nikolaus , Geiger, Ralf , Grill, Bernhard
IPC分类号： G10L19/022 , G10L19/04 , G10L19/20
CPC分类号： G10L19/022 , G10L19/20

9. 发明公开

EP2410520A1 Time warp activation signal provider, audio signal encoder, method for providing a time warp activation signal, method for encoding an audio signal and computer programs 有权
标题翻译：时间扭曲激活信号提供器，音频信号编码器，用于提供时间扭曲激活信号的方法，用于编码音频信号的方法和计算机程序
公开(公告)号：EP2410520A1
公开(公告)日：2012-01-25
申请号：EP11180988.5
申请日：2009-07-06
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Bayer, Stefan , Disch, Sascha , Geiger, Ralf , Neuendorf, Max , Schuller, Gerald , Fuchs, Guillaume , Edler, Bernd
IPC分类号： G10L19/00 , G10L21/04
CPC分类号： G10L21/04 , G10L19/002 , G10L19/022 , G10L19/025 , G10L19/028 , G10L19/032 , G10L19/265 , G10L21/043 , G10L25/78 , G10L25/90
摘要： An audio encoder comprises a window function controller (504), a windower (502), a time warper (506) with a final quality check functionality, a time/frequency converter (508), a TNS stage (510) or a quantizer encoder (512), the window function controller (504), the time warper (506), the TNS stage (510) or an additional noise filling analyzer (524) are controlled by signal analysis results obtained by a time warp analyzer (516) or a signal classifier (520). Furthermore, a decoder applies a noise filling operation using a manipulated noise filling estimate depending on a harmonic or speech characteristic of the audio signal.
摘要翻译：音频编码器包括窗函数控制器（504），加窗器（502），具有最终质量检查功能的时间扭曲器（506），时间/频率转换器（508），TNS级（510）或量化器编码器通过时间扭曲分析器（516）获得的信号分析结果来控制窗函数控制器（504），时间扭曲器（506），TNS级（510）或附加噪声填充分析器（524）信号分类器（520）。此外，解码器使用取决于音频信号的谐波或语音特性的操纵噪声填充估计来应用噪声填充操作。

10. 发明公开

EP2410519A1 Time warp activation signal provider, audio signal encoder, method for providing a time warp activation signal, method for encoding an audio signal and computer programs 有权
标题翻译：聚集时间激活信号提供器，音频信号编码器，用于编码音频信号提供时间打褶激活信号，方法的方法，以及计算机程序
公开(公告)号：EP2410519A1
公开(公告)日：2012-01-25
申请号：EP11180983.6
申请日：2009-07-06
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Bayer, Stefan , Disch, Sascha , Geiger, Ralf , Neuendorf, Max , Schuller, Gerald , Fuchs, Guillaume , Edler, Bernd
IPC分类号： G10L19/00 , G10L21/04
CPC分类号： G10L21/04 , G10L19/002 , G10L19/022 , G10L19/025 , G10L19/028 , G10L19/032 , G10L19/265 , G10L21/043 , G10L25/78 , G10L25/90
摘要： An audio encoder comprises a window function controller (504), a windower (502), a time warper (506) with a final quality check functionality, a time/frequency converter (508), a TNS stage (510) or a quantizer encoder (512), the window function controller (504), the time warper (506), the TNS stage (510) or an additional noise filling analyzer (524) are controlled by signal analysis results obtained by a time warp analyzer (516) or a signal classifier (520). Furthermore, a decoder applies a noise filling operation using a manipulated noise filling estimate depending on a harmonic or speech characteristic of the audio signal.
摘要翻译：一种音频编码器包括窗口函数控制器（504），一个加窗器（502），一个时间扭曲器（506）与最终质量检查功能上，一时间/频率转换器（508），一个TNS级（510）或一个量化器编码器（512），所述窗口函数控制器（504），所述时间扭曲器（506）中，TNS级（510）或额外的噪声填充分析器（524）通过由时间扭曲分析器（516）获得的信号分析结果来控制或信号分类器（520）。进一步，解码器应用使用操纵的噪声填充估计取决于音频信号的谐波或语音特性的噪声填充手术。

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