BLIND DEREVERBERATION OF SINUSOID SIGNALS USING PLL-BASED COMBINED PHASE AND AMPLITUDE ANALYSIS

被引：0

作者：

Huber, Ralf ^{[1
]}

Kraft, Florian ^{[1
]}

Waibel, Alex ^{[1
]}

机构：

[1] Karlsruhe Inst Technol, Dept Comp Sci, Inst Anthropomat, D-76131 Karlsruhe, Germany

来源：

2012 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (ICASSP) | 2012年

关键词：

Dereverberation; Phase-Locked-Loop; PLL; Echo; Robust Speech Recognition;

D O I：

暂无

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

In this paper a new 'blind' single-microphone method for the dereverberation of sinusoid signals is presented. A phase-locked-loop is utilized to precisely track the amplitude, frequency and phase offset of a reverberated recording. This information can then be combined to calculate the amplitude and phase offset of single reverberated wavefronts, which allows to subtract them from the original recording. Experimental results have shown that the direct-to-reverberant ratio of recordings can be improved to an extent equal to a delay-and-sum beamformer with 5 microphones. At the end, extensions are outlined which might make the method suitable for dereverberation of real speech.

引用

页码：4549 / 4552

页数：4

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