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1. 发明申请

WO2013066238A3 GENERATION OF A HIGH BAND EXTENSION OF A BANDWIDTH EXTENDED AUDIO SIGNAL 审中-公开
标题翻译：带宽扩展的扩展音频信号的产生
公开(公告)号：WO2013066238A3
公开(公告)日：2013-08-01
申请号：PCT/SE2012050937
申请日：2012-09-04
申请人： ERICSSON TELEFON AB L M , NORVELL ERIK , GRANCHAROV VOLODYA , TOFTGAARD TOMAS JANSSON
发明人： NORVELL ERIK , GRANCHAROV VOLODYA , TOFTGAARD TOMAS JANSSON
IPC分类号： G10L21/038 , G10L19/26
CPC分类号： G10L19/26 , G10L19/12 , G10L21/038
摘要： An audio decoder (200) configured to generate a high band extension of an audio signal from an envelope and an excitation. The audio decoder includes a control arrangement (41, 42, 44) configured to jointly control envelope shape and excitation noisiness with a common control parameter (f).
摘要翻译：音频解码器（200），被配置为从包络和激励产生音频信号的高频段扩展。音频解码器包括被配置为通过公共控制参数（f）共同控制包络形状和激发噪声的控制装置（41,42,44）。

2. 发明申请

WO2011142709A3 METHOD AND ARRANGEMENT FOR PROCESSING OF AUDIO SIGNALS 审中-公开
标题翻译：用于处理音频信号的方法和装置
公开(公告)号：WO2011142709A3
公开(公告)日：2011-12-29
申请号：PCT/SE2011050518
申请日：2011-04-28
申请人： ERICSSON TELEFON AB L M , GRANCHAROV VOLODYA , SVERRISSON SIGURDUR
发明人： GRANCHAROV VOLODYA , SVERRISSON SIGURDUR
IPC分类号： G10L19/14
CPC分类号： G10L19/26 , G10L19/02
摘要： Method and decoder for processing of audio signals. The method and decoder relate to deriving a processed vector d by applying a post-filter directly on a vector d comprising quantized MDCT domain coefficients of a time segment of an audio signal. The post-filter is configured to have a transfer function H which is a compressed version of the envelope of the vector d. A signal wave form is reconstructed by performing an inverse MDCT transform on the processed vector d.
摘要翻译：用于处理音频信号的方法和解码器。该方法和解码器涉及通过在包括音频信号的时间段的量化的MDCT域系数的矢量d上直接应用后置滤波器来导出处理后的矢量d。后置滤波器被配置为具有传递函数H，其是向量d的包络的压缩版本。通过对处理的向量d执行逆MDCT变换来重建信号波形。

3. 发明申请

WO2013066236A2 AUDIO ENCODING/DECODING BASED ON AN EFFICIENT REPRESENTATION OF AUTO-REGRESSIVE COEFFICIENTS 审中-公开
标题翻译：基于自回归系数的有效表示的音频编码/解码
公开(公告)号：WO2013066236A2
公开(公告)日：2013-05-10
申请号：PCT/SE2012050520
申请日：2012-05-15
申请人： ERICSSON TELEFON AB L M , GRANCHAROV VOLODYA , SVERRISSON SIGURDUR
发明人： GRANCHAROV VOLODYA , SVERRISSON SIGURDUR
IPC分类号： G10L19/06
CPC分类号： G10L19/038 , G10L19/0204 , G10L19/032 , G10L19/06 , G10L21/038 , G10L2019/001
摘要： Described is an encoder (50) for encoding a parametric spectral representation (f) of auto-regressive coefficients that partially represent an audio signal. The encoder includes a low-frequency encoder (10) configured to quantize elements of a part of the parametric spectral representation that correspond to a low-frequency part of the audio signal. It also includes a high-frequency encoder (12) configured to encode a high-frequency part (f H ) of the parametric spectral representation (f) by weighted averaging based on the quantized elements (f L ) flipped around a quantized mirroring frequency (f m ), which separates the low-frequency part from the high- frequency part, and a frequency grid determined from a frequency grid codebook (24) in a closed-loop search procedure. Described are also a corresponding decoder, corresponding encoding/decoding methods and UEs including such an encoder/decoder.
摘要翻译：描述了用于对部分表示音频信号的自回归系数的参数频谱表示（f）进行编码的编码器（50）。编码器包括配置成量化与音频信号的低频部分对应的参数频谱表示的一部分的元素的低频编码器（10）。它还包括高频编码器（12），该高频编码器被配置为通过基于在量化的镜像频率（f L）周围翻转的量化元素（f L）通过加权平均来编码参数频谱表示（f）的高频部分（f H） fm），其将低频部分与高频部分分开，并且在闭环搜索过程中从频率网格码本（24）确定频率网格。还描述了相应的解码器，对应的编码/解码方法和包括这种编码器/解码器的UE。

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