A hybrid design of beamformers for voice control devices
In this paper, a new approach to designing beamformers for voice control device is proposed. It is well-known that under a strong near-field noise with low signal-to-noise ratios (SNR), the performance of speech recognition is deteriorated significantly. However, designing the beamformer for enhanci...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Published: |
Yokohama Publishers
2012
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/34974 |
| _version_ | 1848754369763213312 |
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| author | Yiu, K. Chan, Kit Yan Grbić, N. Nordholm, Sven |
| author_facet | Yiu, K. Chan, Kit Yan Grbić, N. Nordholm, Sven |
| author_sort | Yiu, K. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In this paper, a new approach to designing beamformers for voice control device is proposed. It is well-known that under a strong near-field noise with low signal-to-noise ratios (SNR), the performance of speech recognition is deteriorated significantly. However, designing the beamformer for enhancing speech recognition is a slow process and might not be adapted. easily to the changing noise environment. In order to lower the complexity of the design, we intend to exploit the combination of existing optimal beamformer designs, which can be implemented in parallel. These include the least-squares technique and the signal-to-noise ratio maximization technique. We show here that for a given pre-trained speech recognizer and for a finite set of speech commands, neither method has a satisfactory performance in speech recognition accuracy under very low SNRs. However, since the two techniques have different characteristics in speech distortion and noise suppression, we show that it is possible to enhance the speech recognition accuracy by combining these two optimal designs. |
| first_indexed | 2025-11-14T08:39:19Z |
| format | Journal Article |
| id | curtin-20.500.11937-34974 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:39:19Z |
| publishDate | 2012 |
| publisher | Yokohama Publishers |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-349742017-01-30T13:46:52Z A hybrid design of beamformers for voice control devices Yiu, K. Chan, Kit Yan Grbić, N. Nordholm, Sven speech recognition microphone array multi-channel filter beamformer signal enhancement noise reduction In this paper, a new approach to designing beamformers for voice control device is proposed. It is well-known that under a strong near-field noise with low signal-to-noise ratios (SNR), the performance of speech recognition is deteriorated significantly. However, designing the beamformer for enhancing speech recognition is a slow process and might not be adapted. easily to the changing noise environment. In order to lower the complexity of the design, we intend to exploit the combination of existing optimal beamformer designs, which can be implemented in parallel. These include the least-squares technique and the signal-to-noise ratio maximization technique. We show here that for a given pre-trained speech recognizer and for a finite set of speech commands, neither method has a satisfactory performance in speech recognition accuracy under very low SNRs. However, since the two techniques have different characteristics in speech distortion and noise suppression, we show that it is possible to enhance the speech recognition accuracy by combining these two optimal designs. 2012 Journal Article http://hdl.handle.net/20.500.11937/34974 Yokohama Publishers restricted |
| spellingShingle | speech recognition microphone array multi-channel filter beamformer signal enhancement noise reduction Yiu, K. Chan, Kit Yan Grbić, N. Nordholm, Sven A hybrid design of beamformers for voice control devices |
| title | A hybrid design of beamformers for voice control devices |
| title_full | A hybrid design of beamformers for voice control devices |
| title_fullStr | A hybrid design of beamformers for voice control devices |
| title_full_unstemmed | A hybrid design of beamformers for voice control devices |
| title_short | A hybrid design of beamformers for voice control devices |
| title_sort | hybrid design of beamformers for voice control devices |
| topic | speech recognition microphone array multi-channel filter beamformer signal enhancement noise reduction |
| url | http://hdl.handle.net/20.500.11937/34974 |