公开(公告)号：US08401845B2

公开(公告)日：2013-03-19

申请号：US12918586

申请日：2009-03-05

申请人： Tommy Vaillancourt ,  Milan Jelinek ,  Vladimir Malenovsky ,  Redwan Salami

发明人： Tommy Vaillancourt ,  Milan Jelinek ,  Vladimir Malenovsky ,  Redwan Salami

IPC分类号： G10L21/02 ,  G10L19/14 ,  G10L19/00 ,  H04B15/00

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。 响应于由光谱分析仪产生的光谱参数，解码的音调声音信号的低能谱区域中的量化噪声被减小。 光谱分析仪将从光谱分析得到的光谱分成一组包括多个频率仓的临界频带，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。

公开(公告)号：US20110173004A1

公开(公告)日：2011-07-14

申请号：US12664010

申请日：2007-12-28

申请人： Bruno Bessette ,  Jimmy Lapierre ,  Vladimir Malenovsky ,  Roch Lefebvre ,  Redwan Salami

发明人： Bruno Bessette ,  Jimmy Lapierre ,  Vladimir Malenovsky ,  Roch Lefebvre ,  Redwan Salami

IPC分类号： G10L19/00

CPC分类号： G10L19/26 ,  G10L19/005 ,  G10L19/24 ,  G10L25/93

摘要： A device and method for shaping noise during encoding of an input sound signal comprise pre-emphasizing the input signal or a decoded signal from a given sound signal codec to produce a pre-emphasized signal, computing a filter transfer function based on the pre-emphasized signal, and shaping the noise by filtering the noise through the transfer function to produce a shaped noise signal, wherein the noise shaping comprises producing a noise feedback. A device and method for noise shaping in a multilayer codec, including at least Layer 1 and 2, comprise: at an encoder, producing an encoded sound signal in Layer 1 including Layer 1 noise shaping, and producing a Layer 2 enhancement signal; at a decoder, decoding the Layer 1 encoded sound signal to produce a synthesis signal, decoding the enhancement signal, computing a filter transfer function based on the synthesis signal, filtering the enhancement signal through the transfer function to produce a Layer 2 filtered enhancement signal, and adding the filtered enhancement signal to the synthesis signal to produce an output signal including contributions from Layer 1 and 2.

摘要翻译： 用于在编码输入声音信号期间整形噪声的装置和方法包括预先强调来自给定声音信号编解码器的输入信号或解码信号以产生预加重信号，基于预先强调的信号计算滤波器传递函数 信号和整形噪声，通过传递函数对噪声进行滤波以产生成形噪声信号，其中噪声整形包括产生噪声反馈。 包括至少第1层和第2层的多层编解码器中的噪声整形的装置和方法包括：在编码器处，产生包括层1噪声整形的层1中的编码声音信号，并产生第2层增强信号; 在解码器处，解码第1层编码声音信号以产生合成信号，对增强信号进行解码，基于合成信号计算滤波器传递函数，通过传递函数对增强信号进行滤波，以产生第2层滤波的增强信号， 并将经滤波的增强信号加到合成信号上以产生包括来自层1和2的贡献的输出信号。

公开(公告)号：US20110035213A1

公开(公告)日：2011-02-10

申请号：US12664934

申请日：2008-06-20

申请人： Vladimir Malenovsky ,  Milan Jelinek ,  Tommmy Vaillancourt ,  Redwan Salami

发明人： Vladimir Malenovsky ,  Milan Jelinek ,  Tommmy Vaillancourt ,  Redwan Salami

IPC分类号： G10L11/06

CPC分类号： G10L25/78 ,  G10L19/22

摘要： A device and method for estimating a tonality of a sound signal comprise: calculating a current residual spectrum of the sound signal; detecting peaks in the current residual spectrum; calculating a correlation map between the current residual spectrum and a previous residual spectrum for each detected peak; and calculating a long-term correlation map based on the calculated correlation map, the long-term correlation map being indicative of a tonality in the sound signal.

摘要翻译： 用于估计声音信号的音调的装置和方法包括：计算声音信号的当前残余频谱; 检测当前残留谱中的峰; 计算每个检测到的峰值的当前残差谱和先前残差谱之间的相关图; 以及基于所计算的相关图计算长期相关图，所述长期相关图表示所述声音信号中的音调。

公开(公告)号：US09076443B2

公开(公告)日：2015-07-07

申请号：US13396371

申请日：2012-02-14

申请人： Vladimir Malenovsky

发明人： Vladimir Malenovsky

IPC分类号： G10L19/08 ,  G10L19/083 ,  G10L25/93

CPC分类号： G10L19/083

摘要： A device and method for quantizing a gain of a fixed contribution of an excitation in a frame, including sub-frames, of a coded sound signal. The gain is estimated in a sub-frame using a frame classification parameter, and is then quantized in the sub-frame using the estimated gain. The device and method can be used in jointly quantizing gains of adaptive and fixed contributions of an excitation. For retrieving a quantized gain of a fixed contribution of an excitation in a sub-frame, the gain of the fixed excitation contribution is estimated using a frame classification parameter, a gain codebook supplies a correction factor in response to a received, gain codebook index, and a multiplier multiplies the estimated gain by the correction factor to provide the quantized gain.

摘要翻译： 一种用于量化编码声音信号的包括子帧在内的激励的固定贡献的增益的装置和方法。 使用帧分类参数在子帧中估计增益，然后使用估计的增益在子帧中量化增益。 该装置和方法可以用于联合量化激励的自适应和固定贡献的增益。 为了检索子帧中激励的固定贡献的量化增益，使用帧分类参数来估计固定激励贡献的增益，增益码本响应于所接收的增益码本索引提供校正因子， 并且乘法器将估计的增益乘以校正因子以提供量化的增益。

公开(公告)号：US08990073B2

公开(公告)日：2015-03-24

申请号：US12664934

申请日：2008-06-20

申请人： Vladimir Malenovsky ,  Milan Jelinek ,  Tommy Vaillancourt ,  Redwan Salami

发明人： Vladimir Malenovsky ,  Milan Jelinek ,  Tommy Vaillancourt ,  Redwan Salami

IPC分类号： G10L21/00 ,  G10L25/78 ,  G10L25/00 ,  H04B15/00 ,  G10L19/22

CPC分类号： G10L25/78 ,  G10L19/22

摘要： A device and method for estimating a tonal stability of a sound signal include: calculating a current residual spectrum of the sound signal; detecting peaks in the current residual spectrum; calculating a correlation map between the current residual spectrum and a previous residual spectrum for each detected peak; and calculating a long-term correlation map based on the calculated correlation map, the long-term correlation map being indicative of a tonal stability in the sound signal.

摘要翻译： 用于估计声音信号的音调稳定性的装置和方法包括：计算声音信号的当前残余频谱; 检测当前残留谱中的峰; 计算每个检测到的峰值的当前残差谱和先前残差谱之间的相关图; 以及基于所计算的相关图来计算长期相关图，所述长期相关图表示所述声音信号中的音调稳定性。

公开(公告)号：US20110022924A1

公开(公告)日：2011-01-27

申请号：US12664024

申请日：2007-12-24

申请人： Vladimir Malenovsky ,  Redwan Salami

发明人： Vladimir Malenovsky ,  Redwan Salami

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： G10L19/26 ,  G10L19/005 ,  G10L19/24 ,  G10L25/93

摘要： A device and method for resynchronization and recovery after frame erasure concealment of an encoded sound signal comprise decoding, in a current frame, a correctly received signal after the frame erasure. Frame erasure concealment is extended in the current frame using an erasure-concealed signal from a previous frame to produce an extended erasure-concealed signal. The extended erasure-concealed signal is correlated with the decoded signal in the current frame and the extended erasure-concealed signal is synchronized with the decoded signal in response to the correlation. A smooth transition is produced in the current frame from the synchronized extended erasure-concealed signal to the decoded signal.

摘要翻译： 在编码声音信号的帧擦除隐藏之后重新同步和恢复的装置和方法包括在帧擦除之后在当前帧中解码正确接收的信号。 帧擦除隐藏在当前帧中使用来自前一帧的擦除隐藏信号来扩展以产生扩展的擦除隐藏信号。 扩展的擦除隐藏信号与当前帧中的解码信号相关，并且扩展的擦除隐藏信号响应于相关而与解码信号同步。 在当前帧中从同步的扩展消隐隐藏信号到解码信号产生平滑的转变。