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51. 发明授权

US11276411B2 Method and device for allocating a bit-budget between sub-frames in a CELP CODEC 有权
公开(公告)号：US11276411B2
公开(公告)日：2022-03-15
申请号：US16647801
申请日：2018-09-20
申请人： VOICEAGE CORPORATION
发明人： Vaclav Eksler
IPC分类号： G10L19/12 , G10L19/24 , G10L19/002 , G10L19/038
摘要： A method and device for allocating a bit-budget to a plurality of first parts and to a second part of a CELP core module of (a) an encoder for encoding a sound signal or (b) a decoder for decoding the sound signal. In a frame of the sound signal comprising sub-frames, respective bit-budgets are allocated to the first CELP core module parts and a bit-budget remaining after allocating to the first CELP core module parts their respective bit-budgets is allocated to the second CELP core module part. According to an alternative, the second CELP core module part bit-budget is distributed between the sub-frames of the frame and a larger bit-budget is allocated to at least one of the sub-frames of the frame. The at least one sub-frame may be the first sub-frame of the frame, at least one sub-frame following the first sub-frame, or the sub-frame using a glottal-impulse-shape codebook.

52. 发明授权

US10984806B2 Method and system for encoding a stereo sound signal using coding parameters of a primary channel to encode a secondary channel 有权
公开(公告)号：US10984806B2
公开(公告)日：2021-04-20
申请号：US16381706
申请日：2019-04-11
申请人： VoiceAge Corporation
发明人： Tommy Vaillancourt , Milan Jelinek
IPC分类号： G10L19/008 , G10L19/06 , G10L19/24 , G10L19/09 , G10L25/51 , G10L25/03 , G10L19/002 , G10L19/032 , H04S1/00 , G10L25/21
摘要： A stereo sound encoding method and system for encoding left and right channels of a stereo sound signal, down mix the left and right channels of the stereo sound signal to produce primary and secondary channels, encode the primary channel, and encode the secondary channel. Encoding the secondary channel comprises analyzing coherence between coding parameters calculated during the secondary channel encoding and coding parameters calculated during the primary channel encoding to decide if the coding parameters calculated during the primary channel encoding are sufficiently close to the coding parameters calculated during the secondary channel encoding to be re-used during the secondary channel encoding.

53. 发明申请

US20190228784A1 METHOD AND SYSTEM FOR ENCODING LEFT AND RIGHT CHANNELS OF A STEREO SOUND SIGNAL SELECTING BETWEEN TWO AND FOUR SUB-FRAMES MODELS DEPENDING ON THE BIT BUDGET 审中-公开
公开(公告)号：US20190228784A1
公开(公告)日：2019-07-25
申请号：US16369086
申请日：2019-03-29
申请人： VoiceAge Corporation
发明人： Tommy Vaillancourt , Milan Jelinek
IPC分类号： G10L19/008 , G10L25/51 , G10L25/21 , H04S1/00 , G10L19/032 , G10L19/002 , G10L25/03 , G10L19/09 , G10L19/24 , G10L19/06
摘要： A stereo sound encoding method and system, for encoding left and right channels of a stereo sound signal, down mix the left and right channels of the stereo sound signal to produce primary and secondary channels and encode the primary and secondary channels. Encoding the primary channel and encoding the secondary channel comprise determining a first bit budget to encode the primary channel and a second bit budget to encode the secondary channel. If the second bit budget is sufficient, the secondary channel is encoded using a four subframes model and, if the second bit budget is insufficient for using the four subframes model, the secondary channel is encoded using a two subframes model.

54. 发明授权

US10319384B2 Low bitrate audio encoding/decoding scheme having cascaded switches 有权
公开(公告)号：US10319384B2
公开(公告)日：2019-06-11
申请号：US14580179
申请日：2014-12-22
申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. , VoiceAge Corporation
发明人： Bernhard Grill , Roch Lefebvre , Bruno Bessette , Jimmy Lapierre , Philippe Gournay , Redwan Salami , Stefan Bayer , Guillaume Fuchs , Stefan Geyersberger , Ralf Geiger , Johannes Hilpert , Ulrich Kraemer , Jeremie Lecomte , Markus Multrus , Max Neuendorf , Harald Popp , Nikolaus Rettelbach
IPC分类号： G10L19/18 , G10L19/008 , G10L19/20 , G10L21/038 , G10L19/16 , G10L19/00 , G10L19/02
摘要： An audio encoder has a first information sink oriented encoding branch, a second information source or SNR oriented encoding branch, and a switch for switching between the first encoding branch and the second encoding branch, wherein the second encoding branch has a converter into a specific domain different from the spectral domain, and wherein the second encoding branch furthermore has a specific domain coding branch, and a specific spectral domain coding branch, and an additional switch for switching between the specific domain coding branch and the specific spectral domain coding branch. An audio decoder has a first domain decoder, a second domain decoder for decoding a signal, and a third domain decoder and two cascaded switches for switching between the decoders.

55. 发明申请

US20180277126A1 METHOD AND SYSTEM FOR ENCODING A STEREO SOUND SIGNAL USING CODING PARAMETERS OF A PRIMARY CHANNEL TO ENCODE A SECONDARY CHANNEL 审中-公开
公开(公告)号：US20180277126A1
公开(公告)日：2018-09-27
申请号：US15761900
申请日：2016-09-22
申请人： VOICEAGE CORPORATION
发明人： Tommy Vaillancourt , Milan Jelinek
IPC分类号： G10L19/008 , H04S1/00 , G10L19/09 , G10L19/06 , G10L25/21 , G10L19/24
CPC分类号： G10L19/008 , G10L19/002 , G10L19/032 , G10L19/06 , G10L19/09 , G10L19/24 , G10L25/03 , G10L25/21 , G10L25/51 , H04S1/007 , H04S2400/01 , H04S2400/03
摘要： A stereo sound encoding method and system for encoding left and right channels of a stereo sound signal, down mix the left and right channels of the stereo sound signal to produce primary and secondary channels, encode the primary channel, and encode the secondary channel. Encoding the secondary channel comprises analyzing coherence between coding parameters calculated during the secondary channel encoding and coding parameters calculated during the primary channel encoding to decide if the coding parameters calculated during the primary channel encoding are sufficiently close to the coding parameters calculated during the secondary channel encoding to be re-used during the secondary channel encoding.

56. 发明授权

US09852741B2 Methods, encoder and decoder for linear predictive encoding and decoding of sound signals upon transition between frames having different sampling rates 有权
公开(公告)号：US09852741B2
公开(公告)日：2017-12-26
申请号：US14677672
申请日：2015-04-02
申请人： VOICEAGE CORPORATION
发明人： Redwan Salami , Vaclav Eksler
IPC分类号： G10L19/06 , G10L19/16 , G10L19/24 , G10L19/12 , 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.

57. 发明授权

US09552822B2 Apparatus and method for processing an audio signal and for providing a higher temporal granularity for a combined unified speech and audio codec (USAC) 有权
标题翻译：用于处理音频信号并为组合的统一语音和音频编解码器（USAC）提供更高的时间粒度的装置和方法，
公开(公告)号：US09552822B2
公开(公告)日：2017-01-24
申请号：US13855889
申请日：2013-04-03
申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. , VoiceAge Corporation
发明人： Markus Multrus , Bernhard Grill , Nikolaus Rettelbach , Guillaume Fuchs , Max Neuendorf , Bruno Bessette , Roch Lefebvre , Philippe Gournay , Stephan Wilde
IPC分类号： G10L19/12 , G10L19/02 , G10L21/00 , G10L19/00
CPC分类号： G10L19/12 , G10L19/0204 , G10L21/00 , G10L2019/0012
摘要： An apparatus for processing an audio signal is provided. The apparatus has a signal processor and a configurator. The configurator is adapted to configure the signal processor based on configuration information such that a configurable upsampling factor is equal to a first upsampling value when a first ratio of the second configurable number of samples to a first configurable number of samples has a first ratio value. Moreover, the configurator is adapted to configure the signal processor such that the configurable upsampling factor is equal to a different second upsampling value, when a different second ratio of the second configurable number of samples to the first configurable number of samples has a different second ratio value. The first or the second ratio value is not an integer value.
摘要翻译：提供一种用于处理音频信号的装置。该装置具有信号处理器和配置器。配置器适于基于配置信息来配置信号处理器，使得当第二可配置数量的采样的第一比率与第一可配置数量的样本具有第一比值时，可配置的上采样因子等于第一上采样值。此外，配置器适于配置信号处理器，使得可配置的上采样因子等于不同的第二上采样值，当第二可配置采样数量与第一可配置数量样本的不同第二比率具有不同的第二比率值。第一或第二比值不是整数值。

58. 发明授权

US09252728B2 Non-speech content for low rate CELP decoder 有权
标题翻译：用于低速率CELP解码器的非语音内容
公开(公告)号：US09252728B2
公开(公告)日：2016-02-02
申请号：US13667921
申请日：2012-11-02
申请人： VOICEAGE CORPORATION
发明人： Tommy Vaillancourt , Milan Jelinek
IPC分类号： G10L21/00 , H03G3/20 , G10L19/20 , G10L19/26 , G10L19/08 , G10L25/81 , G10L25/78 , G10L25/93 , G10L19/22
CPC分类号： H03G3/20 , G10L19/08 , G10L19/20 , G10L19/22 , G10L19/26 , G10L25/78 , G10L25/81 , G10L25/93
摘要： A method and device for modifying a synthesis of a time-domain excitation decoded by a time-domain decoder, wherein the synthesis of the decoded time-domain excitation is classified into one of a number of categories. The decoded time-domain excitation is converted into a frequency-domain excitation, and the frequency-domain excitation is modified as a function of the category in which the synthesis of the decoded time-domain excitation is classified. The modified frequency-domain excitation is converted into a modified time-domain excitation, and a synthesis filter is supplied with the modified time-domain excitation to produce a modified synthesis of the decoded time-domain excitation.
摘要翻译：一种用于修改由时域解码器解码的时域激励的合成的方法和装置，其中解码的时域激励的合成被分类为多个类别之一。解码的时域激励被转换为频域激励，并且频域激励被修改为将解码的时域激励的合成分类的类别的函数。将修正的频域激励转换为修正的时域激励，并对合成滤波器进行修改的时域激励，以产生经解码的时域激励的修正合成。

59. 发明申请

US20140249807A1 DEVICE AND METHOD FOR REDUCING QUANTIZATION NOISE IN A TIME-DOMAIN DECODER 有权
标题翻译：用于减少时域解码器中的量化噪声的装置和方法
公开(公告)号：US20140249807A1
公开(公告)日：2014-09-04
申请号：US14196585
申请日：2014-03-04
申请人： VOICEAGE CORPORATION
发明人： Tommy VAILLANCOURT , Milan Jelinek
IPC分类号： G10L21/0224 , G10L21/04 , G10L19/005 , G10L21/0232
CPC分类号： G10L19/26 , G10L19/08 , G10L19/12 , G10L21/0208 , G10L21/0224 , G10L21/0232 , G10L25/21 , G10L25/78 , G10L25/93
摘要： The present disclosure relates to a device and method for reducing quantization noise in a signal contained in a time-domain excitation decoded by a time-domain decoder. The decoded time-domain excitation is converted into a frequency-domain excitation. A weighting mask is produced for retrieving spectral information lost in the quantization noise. The frequency-domain excitation is modified to increase spectral dynamics by application of the weighting mask. The modified frequency-domain excitation is converted into a modified time-domain excitation. The method and device can be used for improving music content rendering of linear-prediction (LP) based codecs. Optionally, a synthesis of the decoded time-domain excitation may be classified into one of a first set of excitation categories and a second set of excitation categories, the second set including INACTIVE or UNVOICED categories, the first set including an OTHER category.
摘要翻译：本公开涉及用于减少由时域解码器解码的时域激励中包含的信号中的量化噪声的装置和方法。解码的时域激发被转换成频域激励。产生用于检索在量化噪声中丢失的光谱信息的加权掩码。通过应用加权掩模来修改频域激发以增加光谱动力学。修改的频域激发被转换成修改的时域激励。该方法和装置可用于改进基于线性预测（LP）的编解码器的音乐内容呈现。可选地，解码的时域激励的合成可以分类为第一组激励类别和第二组激励类别中的一个，第二组包括INACTIVE或UNVOICED类别，第一组包括OTHER类别。

60. 发明申请

WO2019056108A1 METHOD AND DEVICE FOR EFFICIENTLY DISTRIBUTING A BIT-BUDGET IN A CELP CODEC 审中-公开
公开(公告)号：WO2019056108A1
公开(公告)日：2019-03-28
申请号：PCT/CA2018/051176
申请日：2018-09-20
申请人： VOICEAGE CORPORATION
发明人： EKSLER, Vaclav
IPC分类号： G10L19/12 , G10L19/038 , G10L19/24 , G10L19/26
摘要： A method and device allocates a bit-budget to a plurality of first parts of a CELP core module of (a) an encoder for encoding a sound signal or (b) a decoder for decoding the sound signal. In the method and device, bit-budget allocation tables assign, for each of a plurality of intermediate bit rates, respective bit-budgets to the first CELP core module parts. A CELP core module bit rate is determined and one of the intermediate bit rates is selected based on the determined CELP core module bit rate. The respective bit-budgets assigned by the bit-budget allocation tables for the selected intermediate bit rate are allocated to the first CELP core module parts.

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