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1. 发明公开

EP2988300A1 Switching of sampling rates at audio processing devices 审中-公开
标题翻译： Schalten von Abtastraten bei Audioverarbeitungsvorrichtungen
公开(公告)号：EP2988300A1
公开(公告)日：2016-02-24
申请号：EP14181307.1
申请日：2014-08-18
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Döhla, Stefan , Fuchs, Guillaume , Grill, Bernhard , Multrus, Markus , Pietrzyk, Grzegorz , Ravelli, Emmanuel , Schnell, Markus
IPC分类号： G10L19/24 , G10L19/04 , G10L19/16
CPC分类号： G10L19/24 , G10L19/04 , G10L19/173 , G10L2019/0002
摘要： Audio decoder device for decoding a bitstream, the audio decoder device comprising:
a predictive decoder for producing a decoded audio frame from the bitstream, wherein the predictive decoder comprises a parameter decoder for producing one or more audio parameters for the decoded audio frame from the bitstream and wherein the predictive decoder comprises a synthesis filter device for producing the decoded audio frame by synthesizing the one or more audio parameters for the decoded audio frame;
a memory device comprising one or more memories, wherein each of the memories is configured to store a memory state for the decoded audio frame, wherein the memory state for the decoded audio frame of the one or more memories is used by the synthesis filter device for synthesizing the one or more audio parameters for the decoded audio frame; and
a memory state resampling device configured to determine the memory state for synthesizing the one or more audio parameters for the decoded audio frame, which has a sampling rate, for one or more of said memories by resampling a preceding memory state for synthesizing one or more audio parameters for a preceding decoded audio frame, which has a preceding sampling rate being different from the sampling rate of the decoded audio frame, for one or more of said memories and to store the memory state for synthesizing of the one or more audio parameters for the decoded audio frame for one or more of said memories into the respective memory.
摘要翻译：一种音频解码器装置，用于解码比特流，所述音频解码器装置包括：预测解码器，用于从所述比特流产生解码的音频帧，其中所述预测解码器包括参数解码器，用于从所述比特流产生用于解码的音频帧的一个或多个音频参数并且其中所述预测解码器包括合成滤波器装置，用于通过合成用于解码的音频帧的一个或多个音频参数来产生解码的音频帧; 包括一个或多个存储器的存储器件，其中每个存储器被配置为存储用于解码音频帧的存储器状态，其中所述一个或多个存储器的解码音频帧的存储状态由合成滤波器装置用于合成用于解码的音频帧的一个或多个音频参数; 以及存储器状态重采样装置，被配置为通过重新采样用于合成一个或多个的前一个存储器状态来确定用于为一个或多个所述存储器合成用于具有采样率的解码音频帧的一个或多个音频参数的存储器状态用于一个或多个所述存储器的先前解码音频帧的音频参数，其具有与解码的音频帧的采样率不同的先前采样率，并且存储用于合成一个或多个音频参数的存储器状态，用于将用于一个或多个所述存储器的解码音频帧转换为相应的存储器。

2. 发明公开

EP2863386A1 Audio decoder, apparatus for generating encoded audio output data and methods permitting initializing a decoder 审中-公开
标题翻译：用于生成编码后的音频输出数据和方法，用于一个解码器的初始化音频解码器装置
公开(公告)号：EP2863386A1
公开(公告)日：2015-04-22
申请号：EP13189328.1
申请日：2013-10-18
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Fischer, Daniel , Czelhan, Bernd , Neuendorf, Max , Rettelbach, Nikolaus , Hofmann, Ingo , Fuchs, Harald , Döhla, Stefan , Färber, Nikolaus
IPC分类号： G10L19/00
CPC分类号： G10L19/167 , G10L19/22 , G10L19/24
摘要： An audio decoder decodes a bit stream of encoded audio data, wherein the bit stream of encoded audio data represents a sequence of audio sample values and comprises a plurality of frames, wherein each frame includes associated encoded audio sample values. The audio decoder comprises a determiner configured to determine whether a frame of the encoded audio data is a special frame comprising encoded audio sample values associated with the special frame and additional information, wherein the additional information comprise encoded audio sample values of a number of frames preceding the special frame, wherein the encoded audio sample values of the preceding frames are encoded using the same codec configuration as the special frame, wherein the number of preceding frames is sufficient to initialize the decoder to be in a position to decode the audio sample values associated with the special frame if the special frame is the first frame upon start-up of the decoder. The decoder comprises an initializer configured to initialize the decoder, wherein initializing the decoder comprises decoding the encoded audio sample values included in the additional information before decoding the encoded audio sample values associated with the special frame.
摘要翻译：一种音频解码器解码编码的音频数据的比特流，worin编码的音频数据的比特流darstellt音频样本值的序列，并且包括帧的复数，每个帧包括相关联worin编码的音频采样值。音频解码器包括经配置以确定的矿是否编码后的音频数据的帧是一个特殊帧包括与所述特殊帧和附加信息相关联的经编码的音频采样值，worin该附加信息的确定器包括编码的帧数preceding-的音频采样值所述特殊帧，worin的preceding-帧的已编码音频采样值使用相同的编解码器配置为特殊帧，worin preceding-帧的数量足以初始化解码器是在一个位置，以进行解码相关联的音频采样值的编码与特殊帧，如果特殊的帧是在所述解码器的启动的第一帧。初始化的解码器包括被配置解码器的初始化，worin初始化解码器包括解码包含在与特殊帧相关联的经编码的音频采样值的解码前的附加信息的编码的音频采样值。

3. 发明公开

EP3321934A1 TIME SCALER, AUDIO DECODER, METHOD AND A COMPUTER PROGRAM USING A QUALITY CONTROL 有权转让
标题翻译：时间调整器，音频解码器，方法和使用质量控制的计算机程序
公开(公告)号：EP3321934A1
公开(公告)日：2018-05-16
申请号：EP17208441.0
申请日：2014-06-18
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Reuschl, Stefan , Döhla, Stefan , Lecomte, Jérémie , Jander, Manuel , Färber, Nikolaus
IPC分类号： G10L21/04 , G10L19/022 , G10L25/06
CPC分类号： G10L21/04 , G10L19/022 , G10L25/06
摘要： A time scaler for providing a time scaled version of an input audio signal is configured to compute or estimate a quality of a time scaled version of the input audio signal obtainable by a time scaling of the input audio signal. The time scaler is configured to perform the time scaling of the input audio signal in dependence on the computation or estimation of the quality of the time scaled version of the input audio signal obtainable by the time scaling. An audio decoder comprises such a time scaler.
摘要翻译：用于提供输入音频信号的时间缩放版本的时间缩放器被配置为计算或估计通过输入音频信号的时间缩放可获得的输入音频信号的时间缩放版本的质量。时间缩放器被配置为依据对通过时间缩放可获得的输入音频信号的时间缩放版本的质量的计算或估计来执行输入音频信号的时间缩放。音频解码器包括这样的时间缩放器。

4. 发明公开

EP4398249A2 DECODING SAMPLE-ACCURATE REPRESENTATION OF AN AUDIO SIGNAL 审中-实审
公开(公告)号：EP4398249A2
公开(公告)日：2024-07-10
申请号：EP24178296.0
申请日：2011-04-12
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Döhla, Stefan , Sperschneider, Ralph
IPC分类号： G10L19/16
CPC分类号： G10L19/167
摘要： A method for providing information on the validity of encoded audio data is disclosed, the encoded audio data being a series of coded audio data units. Each coded audio data unit can contain information on the valid audio data. The method comprises: providing either information on a coded audio data level which describes the amount of data at the beginning of an audio data unit being invalid, or providing information on a coded audio data level which describes the amount of data at the end of an audio data unit being invalid, or providing information on a coded audio data level which describes both the amount of data at the beginning and the end of an audio data unit being invalid. A method for receiving encoded data including information on the validity of data and providing decoded output data is also disclosed. Furthermore, a corresponding encoder and a corresponding decoder are disclosed.

5. 发明公开

EP4191580A1 APPARATUS, METHOD AND COMPUTER PROGRAM FOR ENCODING, DECODING, SCENE PROCESSING AND OTHER PROCEDURES RELATED TO DIRAC BASED SPATIAL AUDIO CODING USING DIFFUSE COMPENSATION 审中-实审
公开(公告)号：EP4191580A1
公开(公告)日：2023-06-07
申请号：EP23150192.5
申请日：2019-12-06
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Fuchs, Guillaume , Thiergart, Oliver , Korse, Srikanth , Döhla, Stefan , Multrus, Markus , Küch, Fabian , Bouthéon, Alexandre , Eichenseer, Andrea , Bayer, Stefan
IPC分类号： G10L19/008 , H04S3/00
摘要： An apparatus for generating a sound field description from an input signal comprising one or more channels, comprises: an input signal analyzer (600) for obtaining diffuseness data from the input signal; a sound component generator (650) for generating, from the input signal, one or more sound field components of a first group of sound field components having for each sound field component a direct component and a diffuse component, and for generating, from the input signal, a second group of sound field components having only a direct component, wherein the sound component generator is configured to perform an energy compensation when generating the first group of sound field components, the energy compensation depending on the diffuseness data and at least one of a number of diffuse components in the first group, and a maximum order of sound field components of the second group.

6. 发明授权

EP3522554B1 DATA PROCESSOR AND TRANSPORT OF USER CONTROL DATA TO AUDIO DECODERS AND RENDERERS 有权
公开(公告)号：EP3522554B1
公开(公告)日：2020-12-02
申请号：EP19163481.5
申请日：2015-03-27
申请人： FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V.
发明人： Schreiner, Stephan , Neukam, Simone , Fuchs, Harald , Plogsties, Jan , Döhla, Stefan
IPC分类号： H04N21/81 , H04N21/439 , H04N21/442 , H04N21/4363 , G10L19/16 , H04N21/435 , H04N21/485

7. 发明授权

EP3396669B1 HARMONICITY-DEPENDENT CONTROLLING OF A HARMONIC FILTER TOOL 有权
公开(公告)号：EP3396669B1
公开(公告)日：2020-11-11
申请号：EP18177372.2
申请日：2015-07-27
申请人： FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V.
发明人： Markovic, Goran , Helmrich, Christian , Ravelli, Emmanuel , Jander, Manuel , Döhla, Stefan
IPC分类号： G10L19/26 , G10L19/025 , G10L19/028 , G10L19/12 , G10L19/22 , G10L25/90 , G10L25/21

8. 发明公开

EP4398249A3 DECODING SAMPLE-ACCURATE REPRESENTATION OF AN AUDIO SIGNAL 审中-实审
公开(公告)号：EP4398249A3
公开(公告)日：2024-07-24
申请号：EP24178296.0
申请日：2011-04-12
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Döhla, Stefan , Sperschneider, Ralph
IPC分类号： G10L19/16
CPC分类号： G10L19/167
摘要： A method for providing information on the validity of encoded audio data is disclosed, the encoded audio data being a series of coded audio data units. Each coded audio data unit can contain information on the valid audio data. The method comprises: providing either information on a coded audio data level which describes the amount of data at the beginning of an audio data unit being invalid, or providing information on a coded audio data level which describes the amount of data at the end of an audio data unit being invalid, or providing information on a coded audio data level which describes both the amount of data at the beginning and the end of an audio data unit being invalid. A method for receiving encoded data including information on the validity of data and providing decoded output data is also disclosed. Furthermore, a corresponding encoder and a corresponding decoder are disclosed.

9. 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).

10. 发明授权

EP3321935B1 TIME SCALER, AUDIO DECODER, METHOD AND A COMPUTER PROGRAM USING A QUALITY CONTROL 有权
公开(公告)号：EP3321935B1
公开(公告)日：2019-05-29
申请号：EP17208464.2
申请日：2014-06-18
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Reuschl, Stefan , Döhla, Stefan , Lecomte, Jérémie , Jander, Manuel , Färber, Nikolaus
IPC分类号： G10L21/04 , G10L19/022 , G10L25/06

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