Name
Abstract | ||
|---|---|---|
We present a USB-based, highly directional, and portable microphone array device that delivers a crisp, clear and noise-reduced speech signal. This device consists of four linearly distributed microphone sensors and a filter-and-sum beamformer designed using broadband beam-forming algorithm. The device has a narrow acoustic beam pattern and identical frequency responses for almost all speech bands. In addition to beamforming, an adaptive noise reduction algorithm is used to further reduce the background noise. By utilizing both the spatial and temporal information, the SNR of speech signals is improved and speech recognition performance in noisy environments is significantly improved as reported in our experiments. |
Year | DOI | Venue |
|---|---|---|
2009 | 10.1109/ICASSP.2009.4959830 | ICASSP |
Keywords | Field | DocType |
noise-reduced speech signal,speech recognition,portable usb-based microphone array,speech recognition performance,acoustic beam pattern,adaptive noise reduction algorithm,speech signal,beamforming,array signal processing,acoustic signal processing,noise reduction,filter-and-sum beamformer,portable microphone array device,background noise,filtering theory,robust speech recognition,microphone arrays,speech band,microphone sensor,microphone array,broadband beam-forming algorithm,portable usb-based microphone array device,signal to noise ratio,frequency,speech,frequency response,algorithm design and analysis,acoustic noise | Noise reduction,Beamforming,Speech processing,Background noise,Computer science,Noise-canceling microphone,Signal-to-noise ratio,Microphone array,Speech recognition,Microphone | Conference |
ISSN | ISBN | Citations |
1520-6149 E-ISBN : 978-1-4244-2354-5 | 978-1-4244-2354-5 | 1 |
PageRank | References | Authors |
0.36 | 3 | 3 |