Name
Abstract | ||
|---|---|---|
Although many microphone-array beamforming algorithms have been developed over the past few decades, most such algorithms so far can only offer limited performance in practical acoustic environments. The reason behind this has not been fully understood and further research on this matter is indispensable. In this paper, we treat a microphone array as a multiple-input multiple-output (MIMO) system and study its signal-enhancement performance. Our major contribution is fourfold. First, we develop a general framework for analyzing performance of beamforming algorithms based on the acoustic MIMO channel impulse responses. Second, we study the bounds for the length of the beamforming filter, which in turn shows the performance bounds of beamforming in terms of speech dereverberation and interference suppression. Third, we address the connection between beamforming and the multiple-input/output inverse theorem (MINT). Finally, we discuss the intrinsic relationships among different classical beamforming techniques and explain, from the channel condition perspective, what the prerequisites are for those techniques to work |
Year | DOI | Venue |
|---|---|---|
2007 | 10.1109/TASL.2006.885251 | Audio, Speech, and Language Processing, IEEE Transactions |
Keywords | Field | DocType |
MIMO systems,acoustic signal processing,array signal processing,interference suppression,microphone arrays,transient response,MIMO acoustic signal processing,acoustic MIMO channel impulse responses,beamforming filter,interference suppression,microphone-array beamforming algorithms,multiple-input multiple-output system,multiple-input-output inverse theorem,signal-enhancement performance,speech dereverberation,Beamforming,Frost,linearly constrained minimum variance (LCMV),microphone arrays,minimum variance distortionless response (MVDR),multiple-input/output inverse theorem (MINT) | WSDMA,Signal processing,Beamforming,Computer science,Sensor array,MIMO,Speech recognition,Microphone array,Microphone,Precoding | Journal |
Volume | Issue | ISSN |
15 | 3 | 1558-7916 |
Citations | PageRank | References |
50 | 3.45 | 19 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Jacob Benesty | 1 | 1941 | 146.01 |
| Jingdong Chen | 2 | 1460 | 128.79 |
| Yiteng Huang | 3 | 1239 | 98.26 |
| Jacek Dmochowski | 4 | 74 | 6.52 |