POLISH ACADEMY of SCIENCES
TECHNICAL SCIENCES
| BULLETIN
of the
POLISH ACADEMY of SCIENCES TECHNICAL SCIENCES |
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| Volume 53, Issue 1, March 2005 | ||||
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| Aims&Scope, Subscription | Editors | Authors' guide | Vol 53-1 | mirror: http://fluid.ippt.gov.pl/~bulletin/ |
| pp 49 - 55 |
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A two-step approach to blind deconvolution of speech and sound sources in the time domain |
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| F.A. OKAZAKI and W. KASPRZAK |
| In order to understand commands given through voice by an operator, user or any human, a robot needs to focus on a single source, to acquire a clear speech sample and to recognize it. A two-step approach to the deconvolution of speech and sound mixtures in the time-domain is proposed. At first, we apply a deconvolution procedure, constrained in the sense, that the de-mixing matrix has fixed diagonal values without non-zero delay parameters. We derive an adaptive rule for the modification of the de-convolution matrix. Hence, the individual outputs extracted in the first step are eventually still self-convolved. This corruption we try to eliminate by a de-correlation process independently for every individual output channel. |
| Keywords: |
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blind signal analysis, convolved mixtures, independent component analysis, robotic sensors, speech reconstruction |
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| Aims&Scope, Subscription | Editors | Authors' guide | Vol 53-1 |
| Copyright
Bulletin of the Polish Academy of Sciences: Technical Sciences
21 April 2005, site prepared by KZ |
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