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31. 发明申请

US20110173010A1 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：US20110173010A1
公开(公告)日：2011-07-14
申请号：US13004400
申请日：2011-01-11
申请人： Jeremie Lecomte , Philippe Gournay , Stefan Bayer , Markus Multrus , Bruno Bessette , Bernhard Grill
发明人： Jeremie Lecomte , Philippe Gournay , Stefan Bayer , Markus Multrus , Bruno Bessette , Bernhard Grill
IPC分类号： G10L19/00
CPC分类号： G10L19/20 , G10L19/022
摘要： An audio encoder for encoding audio samples has a first time domain aliasing introducing encoder configured to decode audio samples in a first encoding domain and having a first framing rule, a start window and a stop window. The audio encoder further has a second encoder configured to encode samples in a second encoding domain and having a predetermined frame size number of audio samples, and a coding warm-up period number of audio samples, the second encoder having a different second framing rule, a frame of the second encoder being an encoded representation of a number of successive audio samples that is equal to the predetermined frame size number of audio samples. The audio encoder further has a controller switching from the first to the second encoder and for modifying the second framing rule or for modifying the start or the stop window of the first encoder.
摘要翻译：用于编码音频样本的音频编码器具有第一时域混叠引入编码器，其被配置为对第一编码域中的音频样本进行解码，并且具有第一成帧规则，起始窗口和停止窗口。音频编码器还具有第二编码器，其被配置为对第二编码域中的样本进行编码并具有预定的帧大小的音频样本，以及编码预热周期数量的音频样本，第二编码器具有不同的第二成帧规则，第二编码器的帧是等于音频样本的预定帧大小数目的多个连续音频采样的编码表示。音频编码器还具有从第一编码器切换到第二编码器并且用于修改第二成帧规则或用于修改第一编码器的起始或停止窗口的控制器。

32. 发明申请

US20100174536A1 METHOD AND DEVICE FOR ADAPTIVE BANDWIDTH PITCH SEARCH IN CODING WIDEBAND SIGNALS 有权
标题翻译：用于编码宽带信号中自适应波段宽度搜索的方法和装置
公开(公告)号：US20100174536A1
公开(公告)日：2010-07-08
申请号：US12620394
申请日：2009-11-17
申请人： Bruno Bessette , Redwan Salami , Roch Lefebvre
发明人： Bruno Bessette , Redwan Salami , Roch Lefebvre
IPC分类号： G10L11/04
CPC分类号： G10L19/26 , G10L2019/0011
摘要： A pitch search method and device for digitally encoding a wideband signal, in particular but not exclusively a speech signal, in view of transmitting, or storing, and synthesizing this wideband sound signal. The new method and device which achieve efficient modeling of the harmonic structure of the speech spectrum uses several forms of low pass filters applied to a pitch codevector, the one yielding higher prediction gain (i.e. the lowest pitch prediction error) is selected and the associated pitch codebook parameters are forwarded.
摘要翻译：考虑到发送或存储和合成该宽带声音信号，用于对宽带信号进行数字编码的音调搜索方法和装置，特别地但不排他地是语音信号。实现语音频谱谐波结构的有效建模的新方法和装置使用几种形式的应用于音调码矢量的低通滤波器，选择产生较高预测增益（即，最低音调预测误差）的一种形式，并且相关音调码本参数被转发。

33. 发明授权

US07672837B2 Method and device for adaptive bandwidth pitch search in coding wideband signals 有权
标题翻译：用于编码宽带信号中的自适应带宽音调搜索的方法和装置
公开(公告)号：US07672837B2
公开(公告)日：2010-03-02
申请号：US11498771
申请日：2006-08-04
申请人： Bruno Bessette , Redwan Salami , Roch Lefebvre
发明人： Bruno Bessette , Redwan Salami , Roch Lefebvre
IPC分类号： G10L11/04 , G10L19/00
CPC分类号： G10L19/26 , G10L2019/0011
摘要： A pitch search method and device for digitally encoding a wideband signal, in particular but not exclusively a speech signal, in view of transmitting, or storing, and synthesizing this wideband sound signal. The new method and device which achieve efficient modeling of the harmonic structure of the speech spectrum uses several forms of low pass filters applied to a pitch codevector, the one yielding higher prediction gain (i.e. the lowest pitch prediction error) is selected and the associated pitch codebook parameters are forwarded.
摘要翻译：考虑到发送或存储和合成该宽带声音信号，用于对宽带信号进行数字编码的音调搜索方法和装置，特别地但不排他地是语音信号。实现语音频谱谐波结构的有效建模的新方法和装置使用几种形式的应用于音调码矢量的低通滤波器，选择产生较高预测增益（即，最低音调预测误差）的一种形式，并且相关音调码本参数被转发。

34. 发明申请

US20100023324A1 Device and Method for Quanitizing and Inverse Quanitizing LPC Filters in a Super-Frame 有权
标题翻译：超帧中的泛化和反向排序LPC滤波器的装置和方法
公开(公告)号：US20100023324A1
公开(公告)日：2010-01-28
申请号：US12501197
申请日：2009-07-10
申请人： Philippe Gournay , Bruno BESSETTE , Redwan Salami
发明人： Philippe Gournay , Bruno BESSETTE , Redwan Salami
IPC分类号： G10L19/14
CPC分类号： G10L19/06 , G10L19/18 , H03M7/3082
摘要： A device and a method for quantizing, in a super-frame including a sequence of frames, LPC filters calculated during the frames of the sequence. The LPC filter quantizing device and method comprises: an absolute quantizer for first quantizing one of the LPC filters using absolute quantization; and at least one quantizer of the other LPC filters using a quantization mode selected from the group consisting of absolute quantization and differential quantization relative to at least one previously quantized filter amongst the LPC filters. For inverse quantizing, at least the first quantized LPC filter is received and an inverse quantizer inverse quantizes the first quantized LPC filter using absolute inverse quantization. If any quantized LPC filter other than the first quantized LPC filter is received, an inverse quantizer inverse quantizes this quantized LPC filter using one of absolute inverse quantization and differential inverse quantization relative to at least one previously received quantized LPC filter.
摘要翻译：一种用于在包括帧序列的超帧中量化在序列的帧期间计算的LPC滤波器的装置和方法。 LPC滤波器量化装置和方法包括：绝对量化器，用于使用绝对量化首先量化LPC滤波器之一; 以及使用从相对于LPC滤波器中的至少一个先前量化的滤波器的绝对量化和差分量化组成的组中选择的量化模式的其它LPC滤波器的至少一个量化器。对于逆量化，至少接收第一量化LPC滤波器，并且逆量化器使用绝对反量化对第一量化LPC滤波器进行逆量化。如果接收到除了第一量化LPC滤波器之外的任何量化LPC滤波器，则逆量化器相对于至少一个先前接收的量化LPC滤波器，使用绝对反量子化和差分逆量化之一对该量化的LPC滤波器进行逆量化。

35. 发明申请

US20100023323A1 Multi-Reference LPC Filter Quantization and Inverse Quantization Device and Method 有权
标题翻译：多参考LPC滤波器量化和逆量化设备及方法
公开(公告)号：US20100023323A1
公开(公告)日：2010-01-28
申请号：US12501188
申请日：2009-07-10
申请人： Philippe Gournay , Bruno Bessette , Redwan Salami
发明人： Philippe Gournay , Bruno Bessette , Redwan Salami
IPC分类号： G10L19/14
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标准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。

36. 发明申请

US20070282603A1 Methods and Devices for Low-Frequency Emphasis During Audio Compression Based on Acelp/Tcx 有权
公开(公告)号：US20070282603A1
公开(公告)日：2007-12-06
申请号：US10589035
申请日：2005-02-18
申请人： Bruno Bessette
发明人： Bruno Bessette
IPC分类号： G10L19/12 , G10L19/04 , G10L21/00
CPC分类号： G10L19/0208 , G10L19/005 , G10L19/24 , G10L19/265 , G10L21/0232
摘要： A first aspect of the present invention relates to a method for low-frequency emphasizing the spectrum of a sound signal transformed in a frequency domain and comprising transform coefficients grouped in a number of blocks, in which a maximum energy for one block is calculated and a position index of the block with maximum energy is determined, a factor is calculated for each block having a position index smaller than the position index of the block with maximum energy the calculated maximum energy and the energy of the block, and, for each block, a gain determining from the factor is applied to the transform coefficients of the block. Another aspect of the invention is concerned with an HF coding method for coding, through a bandwidth extension scheme, an HF signal obtained from separation of a full-bandwidth sound signal into the HF signal and a LF signal, in which an estimation of the an HF gain is calculated from LPC coefficients, the energy of the HF signal is calculated, the LF signal is processed to produce a synthesized version of the HF signal, the energy of the synthesized version of the HF signal is calculated, a ratio between the energy of the HF signal and the energy of the synthesized version of the HF signal is calculated and expressing as an HF gain, and a difference between the estimation of the HF gain and the HF gain is calculated to obtain a gain correction. A third aspect of the invention is concerned with a method for producing from a decoded target signal an overlap-add target signal in a current frame coded according to a first coding mode. According to this method, the decoded target signal of the current frame is windowed and a left portion of the window is skipped. A zero-input response of a weighting filter of the previous frame coded according to a second coding mode is calculated and windowed so that the zero-input response has an amplitude monotonically decreasing to zero after a predetermined time period. Finally, the calculated zero-input response is added to the decoded target signal to reconstruct the overlap-add target signal.

37. 发明授权

US07280959B2 Indexing pulse positions and signs in algebraic codebooks for coding of wideband signals 有权
标题翻译：用于编码宽带信号的代数码本中的脉冲位置和符号索引
公开(公告)号：US07280959B2
公开(公告)日：2007-10-09
申请号：US10415456
申请日：2001-11-22
申请人： Bruno Bessette
发明人： Bruno Bessette
IPC分类号： G10L19/00 , G10L19/04 , G10L19/12
CPC分类号： G10L19/10 , G10L2019/0008
摘要： The indexing method comprises forming a set of tracks of pulse positions, restraining the positions of the non-zero-amplitude pulses of the combinations of the codebook in accordance with the set of tracks of pulse positions, and indexing in the codebook each non-zero-amplitude pulse of the combinations at least in relation to the position of the in the corresponding track, the amplitude of the pulse, and the number of pulse positions in said corresponding track. For indexing the position(s) of one and two non-zero amplitude pulse(s) in one track, procedures code—1 pulse and code—2 pulse are respectively used. When the positions of a number X of non-zero-amplitude pulses are located in one track, X≧3, subindices of these X pulses are calculated using the procedures code—1 pulse and code—2 pulse, and a global index is calculated by combining these subindices.
摘要翻译：索引方法包括形成一组脉冲位置的轨迹，根据脉冲位置的轨迹集合抑制码本的组合的非零幅度脉冲的位置，以及码本中的每个非零所述组合的至少相对于相应轨道的位置，所述脉冲的幅度以及所述对应轨道中的脉冲位置的数量的所述组合的振幅脉冲。为了对一个轨道中一个和两个非零幅度脉冲的位置进行索引，分别使用程序代码1 - 1脉冲和代码 - 2 - 2脉冲。当非零幅度脉冲数X的位置位于一个轨道中时，X> = 3，这些X脉冲的子指针使用程序代码_{- > 1脉冲和代码_{- 2脉冲，并通过组合这些子指标计算全局索引。}}

38. 发明授权

US07191123B1 Gain-smoothing in wideband speech and audio signal decoder 有权
标题翻译：宽带语音和音频信号解码器中的增益平滑
公开(公告)号：US07191123B1
公开(公告)日：2007-03-13
申请号：US10129945
申请日：2000-11-17
申请人： Bruno Bessette , Redwan Salami , Roch Lefebvre
发明人： Bruno Bessette , Redwan Salami , Roch Lefebvre
IPC分类号： G10L19/14 , G10L21/02 , G10L11/06
CPC分类号： G10L19/083 , G10L2019/0012
摘要： The gain smoothing method and device modify the amplitude of an innovative codevector in relation to background noise present in a previously sampled wideband signal. The gain smoothing device comprises a gain smoothing calculator for calculating a smoothing gain in response to a factor representative of voicing in the sampled wideband signal, a factor representative of the stability of a set of linear prediction filter coefficients, and an innovative codebook gain. The gain smoothing device also comprises an amplifier for amplifying the innovative codevector with the smoothing gain to thereby produce a gain-smoothed innovative codevector. The function of the gain-smoothing device improves the perceived synthesized signal when background noise is present in the sampled wideband signal.
摘要翻译：增益平滑方法和装置相对于存在于先前采样的宽带信号中的背景噪声来修改创新码矢量的幅度。增益平滑装置包括：增益平滑计算器，用于响应于表示采样的宽带信号中的发声的因子，表示一组线性预测滤波器系数的稳定性的因子和创新的码本增益来计算平滑增益。增益平滑装置还包括用于利用平滑增益放大创新码矢量的放大器，从而产生增益平滑的创新码矢量。当采样宽带信号中存在背景噪声时，增益平滑装置的功能改善了感知到的合成信号。

39. 发明申请

US20060277036A1 Method and device for adaptive bandwidth pitch search in coding wideband signals 有权
标题翻译：用于编码宽带信号中的自适应带宽音调搜索的方法和装置
公开(公告)号：US20060277036A1
公开(公告)日：2006-12-07
申请号：US11498771
申请日：2006-08-04
申请人： Bruno Bessette , Redwan Salami , Roch Lefebvre
发明人： Bruno Bessette , Redwan Salami , Roch Lefebvre
IPC分类号： G10L11/04
CPC分类号： G10L19/26 , G10L2019/0011
摘要： A pitch search method and device for digitally encoding a wideband signal, in particular but not exclusively a speech signal, in view of transmitting, or storing, and synthesizing this wideband sound signal. The new method and device which achieve efficient modeling of the harmonic structure of the speech spectrum uses several forms of low pass filters applied to a pitch codevector, the one yielding higher prediction gain (i.e. the lowest pitch prediction error) is selected and the associated pitch codebook parameters are forwarded.
摘要翻译：考虑到发送或存储和合成该宽带声音信号，用于对宽带信号进行数字编码的音调搜索方法和装置，特别地但不排他地是语音信号。实现语音频谱谐波结构的有效建模的新方法和装置使用几种形式的应用于音调码矢量的低通滤波器，选择产生较高预测增益（即，最低音调预测误差）的一种形式，并且相关音调码本参数被转发。

40. 发明授权

US06795805B1 Periodicity enhancement in decoding wideband signals 有权
标题翻译：解码宽带信号的周期性增强
公开(公告)号：US06795805B1
公开(公告)日：2004-09-21
申请号：US09830331
申请日：2001-07-23
申请人： Bruno Bessette , Redwan Salami , Roch Lefebvre
发明人： Bruno Bessette , Redwan Salami , Roch Lefebvre
IPC分类号： G10L1912
CPC分类号： G10L19/26 , G10L2019/0011
摘要： An alternative approach by which periodicity enhancement of an excitation signal is achieved through filtering an innovative codevector by an innovation filter to reduce low frequency content of the innovative codevector and enhance the periodicity at low frequencies more than high frequencies.
摘要翻译：激励信号的周期性增强的另一种方法是通过用创新滤波器过滤创新码矢来实现，以减少创新码矢量的低频内容，并提高低频率下的周期性高于高频。

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