Robust speech recognition using near-field superdirective beamforming with post-filtering

被引：0

作者：

McCowan, IA ^{[1
]}

Marro, C ^{[1
]}

Mauuary, L ^{[1
]}

机构：

[1] Queensland Univ Technol, Speech Res Lab, RCSAVT, Sch EESE, Brisbane, Qld 4001, Australia

来源：

2000 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, PROCEEDINGS, VOLS I-VI | 2000年

关键词：

D O I：

暂无

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

This paper assesses the effectiveness of a microphone array system in providing robust hands-free speech recognition on a computer workstation. Near-held superdirectivity (NFSD) is used for the beamforming, and the effect of adding a post-filter is investigated. In the experiments, the speaker is located directly in front of the computer monitor at a distance of 60 cm and the array is designed to fit across the top of a standard 17 inch monitor. To test the proposed system, connected digit strings from the TIDIGITS database are used. The array is shown to have a marked effect on the recognition results in a high noise office environment, particularly where there is a high level of undesired speech.

引用

页码：1723 / 1726

页数：4

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