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An adaptive filter-bank equalizer for speech enhancement

机译:用于语音增强的自适应滤波器组均衡器

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摘要

A digital filter structure is proposed for fixed or adaptive spectral modification of speech and audio signals, which is derived from a reference filter bank. Main applications are audio equalization and noise reduction. The signal is filtered in the time domain, while the filter coefficients are calculated in the (short-term) frequency domain. In comparison to the usual short-term spectral-domain processing, the proposed structure exhibits distinct advantages with respect to signal delay, prototype-filter design, and complexity. The algorithm allows for uniform, as well as for non-uniform spectral resolution. (c) 2005 Elsevier B.V. All rights reserved.
机译:提出了一种数字滤波器结构,用于对语音和音频信号进行固定或自适应频谱修改,该结构是从参考滤波器组中得出的。主要应用是音频均衡和降噪。在时域中对信号进行滤波,而在(短期)频域中计算滤波器系数。与通常的短期频谱域处理相比,该结构在信号延迟,原型滤波器设计和复杂性方面显示出明显的优势。该算法可以实现均匀的光谱分辨率和不均匀的光谱分辨率。 (c)2005 Elsevier B.V.保留所有权利。

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