Method and apparatus for canceling echo accounting for delay variations
A method and apparatus for detecting and correcting for variations in the flat delay, which permits smooth echo canceller operation even under dynamic delay conditions. In a delay monitor, the received signal is compared against delayed versions of the echo estimate to determine whether a shift in t...
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| Main Author | |
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| Format | Patent |
| Language | English |
| Published |
07.10.1997
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| Edition | 6 |
| Subjects | |
| Online Access | Get full text |
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| Abstract | A method and apparatus for detecting and correcting for variations in the flat delay, which permits smooth echo canceller operation even under dynamic delay conditions. In a delay monitor, the received signal is compared against delayed versions of the echo estimate to determine whether a shift in the echo delay has occurred. If such a shift in delay has occurred then a signal indicating the amount of the shift is to the adaptive filter of the echo canceller and the filter taps are updated in accordance with the delay shift value. |
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| AbstractList | A method and apparatus for detecting and correcting for variations in the flat delay, which permits smooth echo canceller operation even under dynamic delay conditions. In a delay monitor, the received signal is compared against delayed versions of the echo estimate to determine whether a shift in the echo delay has occurred. If such a shift in delay has occurred then a signal indicating the amount of the shift is to the adaptive filter of the echo canceller and the filter taps are updated in accordance with the delay shift value. |
| Author | SIH; GILBERT C |
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| Notes | Application Number: US19950533883 |
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| PublicationDateYYYYMMDD | 1997-10-07 |
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| RelatedCompanies | QUALCOMM INCORPORATED |
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| Snippet | A method and apparatus for detecting and correcting for variations in the flat delay, which permits smooth echo canceller operation even under dynamic delay... |
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| SubjectTerms | ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION |
| Title | Method and apparatus for canceling echo accounting for delay variations |
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