Active control apparatus with an adaptive digital filter
An active control apparatus using an adaptive IIR digital filter (16) includes a coefficient control portion (21) for updating the filter coefficient of adaptive IIR digital filter (16) so as to minimize an output error signal level, and a coefficient control portion (19) for updating the filter coe...
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Main Authors | , , , |
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Format | Patent |
Language | English French German |
Published |
14.06.2000
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | An active control apparatus using an adaptive IIR digital filter (16) includes a coefficient control portion (21) for updating the filter coefficient of adaptive IIR digital filter (16) so as to minimize an output error signal level, and a coefficient control portion (19) for updating the filter coefficient of a recursive portion (17) so as to minimize the output level of recursive portion (17). The filter coefficient of recursive filter (17) is updated by these two coefficient control portions (19) and (21) in parallel or in a time-dividing manner. |
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Bibliography: | Application Number: EP19930110805 |