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1. 发明申请

WO2008151410A1 DEVICE AND METHOD FOR NOISE SHAPING IN A MULTILAYER EMBEDDED CODEC INTEROPERABLE WITH THE ITU-T G.711 STANDARD 审中-公开
标题翻译：与ITU-T G.711标准相互配合的多层嵌入式编解码器中的噪声形成装置和方法
公开(公告)号：WO2008151410A1
公开(公告)日：2008-12-18
申请号：PCT/CA2007/002373
申请日：2007-12-28
申请人： VOICEAGE CORPORATION , BESSETTE, Bruno , LAPIERRE, Jimmy , MALENOVSKY, Vladimir , LEFEBVRE, Roch , SALAMI, Redwan
发明人： BESSETTE, Bruno , LAPIERRE, Jimmy , MALENOVSKY, Vladimir , LEFEBVRE, Roch , SALAMI, Redwan
IPC分类号： G10L19/00 , G10L21/02
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。

2. 发明申请

WO2009109050A8 SYSTEM AND METHOD FOR ENHANCING A DECODED TONAL SOUND SIGNAL 审中-公开
公开(公告)号：WO2009109050A8
公开(公告)日：2009-09-11
申请号：PCT/CA2009/000276
申请日：2009-03-05
申请人： VOICEAGE CORPORATION , VAILLANCOURT, Tommy , JELINEK, Milan , MALENOVSKY, Vladimir , SALAMI, Redwan
发明人： VAILLANCOURT, Tommy , JELINEK, Milan , MALENOVSKY, Vladimir , SALAMI, Redwan
IPC分类号： G10L21/02 , G10L19/12
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.

3. 发明申请

WO2008151408A1 DEVICE AND METHOD FOR FRAME ERASURE CONCEALMENT IN A PCM CODEC INTEROPERABLE WITH THE ITU-T RECOMMENDATION G.711 审中-公开
标题翻译：与ITU-T建议相互配合的PCM编解码器中的帧擦除保护的设备和方法G.711
公开(公告)号：WO2008151408A1
公开(公告)日：2008-12-18
申请号：PCT/CA2007/002357
申请日：2007-12-24
申请人： VOICEAGE CORPORATION , MALENOVSKY, Vladimir , SALAMI, Redwan
发明人： MALENOVSKY, Vladimir , SALAMI, Redwan
IPC分类号： G10L19/00 , G10L21/02
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。

4. 发明申请

WO2012109734A1 DEVICE AND METHOD FOR QUANTIZING THE GAINS OF THE ADAPTIVE AND FIXED CONTRIBUTIONS OF THE EXCITATION IN A CELP CODEC 审中-公开
标题翻译：量化CELP编解码器中激励的自适应和固定贡献的装置和方法
公开(公告)号：WO2012109734A1
公开(公告)日：2012-08-23
申请号：PCT/CA2012/000138
申请日：2012-02-14
申请人： VOICEAGE CORPORATION , MALENOVSKY, Vladimir
发明人： MALENOVSKY, Vladimir
IPC分类号： G10L19/14
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, wherein the gain of the fixed excitation contribution is estimated in a sub-frame using a parameter representative of a classification of the frame. The gain of the fixed excitation contribution is then quantized in the sub-frame using the estimated gain. The device and method is used in jointly quantizing gains of adaptive and fixed contributions of an excitation in a frame of a coded sound signal. For retrieving a quantized gain of a fixed contribution of an excitation in a sub-frame of a frame, the gain of the fixed excitation contribution is estimated using a parameter representative of a classification of the frame, 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 a quantized gain of the fixed excitation contribution.
摘要翻译：用于量化编码声音信号的帧中包括子帧的激励的固定贡献的增益的装置和方法，其中固定激励贡献的增益在子帧使用代表帧的分类的参数。然后使用估计的增益在子帧中量化固定激励贡献的增益。该装置和方法用于联合量化编码声音信号的帧中的激励的自适应和固定贡献的增益。为了检索帧的子帧中的激励的固定贡献的量化增益，使用表示帧的分类的参数来估计固定激励贡献的增益，增益码本以响应提供校正因子到接收的增益码本索引，并且乘法器将估计的增益乘以校正因子以提供固定激励贡献的量化增益。

5. 发明申请

WO2022051846A1 METHOD AND DEVICE FOR CLASSIFICATION OF UNCORRELATED STEREO CONTENT, CROSS-TALK DETECTION, AND STEREO MODE SELECTION IN A SOUND CODEC 审中-公开
公开(公告)号：WO2022051846A1
公开(公告)日：2022-03-17
申请号：PCT/CA2021/051238
申请日：2021-09-08
申请人： VOICEAGE CORPORATION
发明人： MALENOVSKY, Vladimir , VAILLANCOURT, Tommy
IPC分类号： G10L19/008 , H04S7/00
摘要： The present disclosure describes the classification of uncorrelated stereo content (hereinafter "UNCLR classification") and the cross-talk detection (hereinafter "XT ALK detection") in an input stereo sound signal. The present disclosure also describes the stereo mode selection, for example an automatic LRTD/DFT stereo mode selection. Additionally, the disclosure uses said classification so as to select one of a first stereo mode and a second stereo mode for coding a stereo sound signal including a left channel and a right channel; detect cross-talk in a stereo sound signal including a left channel and a right channel in response to features extracted from the stereo sound signal including the left and right channels; or classify of uncorrelated stereo content in a stereo sound signal including a left channel and a right channel in response to features extracted from the stereo sound signal including the left and right channels.

6. 发明申请

WO2022226627A1 METHOD AND DEVICE FOR MULTI-CHANNEL COMFORT NOISE INJECTION IN A DECODED SOUND SIGNAL 审中-公开
公开(公告)号：WO2022226627A1
公开(公告)日：2022-11-03
申请号：PCT/CA2022/050342
申请日：2022-03-09
申请人： VOICEAGE CORPORATION
发明人： MALENOVSKY, Vladimir
IPC分类号： G10L19/012 , G10L25/84
摘要： A method and device are implemented in a multi-channel sound decoder for injecting multi-channel comfort noise in a decoded multi-channel sound signal. Background noise in a decoded mono down-mixed signal is estimated, and comfort noise for each of a plurality of channels of the decoded multi-channel sound signal is calculated in response to the estimated background noise. The calculated comfort noise is injected in the respective channels of the decoded multi-channel sound signal.

7. 发明申请

WO2022147615A1 METHOD AND DEVICE FOR UNIFIED TIME-DOMAIN / FREQUENCY DOMAIN CODING OF A SOUND SIGNAL 审中-公开
公开(公告)号：WO2022147615A1
公开(公告)日：2022-07-14
申请号：PCT/CA2022/050006
申请日：2022-01-05
申请人： VOICEAGE CORPORATION
发明人： VAILLANCOURT, Tommy , MALENOVSKY, Vladimir
IPC分类号： G10L19/002 , G10L19/032 , G10L21/038 , G10L25/00
摘要： A unified time-domain/frequency-domain coding method and device for coding an input sound signal comprise a classifier of the input sound signal into one of a plurality of sound signal categories comprising an unclear signal type category showing that the nature of the input sound signal is unclear. One of a plurality of coding sub-modes is selected for coding the input sound signal if the input sound signal is classified in the unclear signal type category. A mixed time-domain/frequency-domain encoder codes the input sound signal using the selected coding sub-mode. The mixed time-domain/frequency-domain encoder comprises a selector of frequency bands and allocator of bits for selecting frequency bands to quantize and for distributing a bit budget available to quantization between the selected frequency bands. Corresponding sound signal decoder and decoding method are also provided.

8. 发明申请

WO2021207825A1 METHOD AND DEVICE FOR SPEECH/MUSIC CLASSIFICATION AND CORE ENCODER SELECTION IN A SOUND CODEC 审中-公开
公开(公告)号：WO2021207825A1
公开(公告)日：2021-10-21
申请号：PCT/CA2021/050465
申请日：2021-04-08
申请人： VOICEAGE CORPORATION
发明人： MALENOVSKY, Vladimir
IPC分类号： G10L19/20 , G10L19/008 , G10L19/083 , G10L25/15
摘要： Two-stage speech/music classification device and method classify an input sound signal and select a core encoder for encoding the sound signal. A first stage classifies the input sound signal into one of a number of final classes. A second stage extracts high-level features of the input sound signal and selects the core encoder for encoding the input sound signal in response to the extracted high-level features and the final class selected in the first stage.

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