发明名称 |
APPARATUS AND METHOD OF CALCULATING CONTROL PARAMETERS OF ECHO SUPPRESSION FILTER AND APPARATUS AND METHOD OF CALCULATING DELAY VALUE |
摘要 |
FIELD: radio engineering, communication.SUBSTANCE: apparatus (200) for calculating control parameters of a noise filter (210), designed to filter a second audio signal in order to eliminate an echo signal based on a first audio signal, includes a computer (220) having a value determiner (230) for calculating at least one energy factor for a band-pass signal of at least two time-consecutive data units of at least one signal from a group of signals. The computer (220) also includes an average value determiner (250) for determining at least one average value of at least one calculated energy factor for the band-pass signal. The computer (220) also includes a modifier (260) for correcting at least one energy factor for the band-pass signal based on the calculated average value for the band-pass signal. The computer (220) also includes a device for calculating control parameters (270) for the suppression filter (210) based on at least one corrected energy factor.EFFECT: improved sound quality of acoustic systems owing to suppression of reflected signals in proportion to the noise level.32 cl, 14 dwg, 2 app |
申请公布号 |
RU2495506(C2) |
申请公布日期 |
2013.10.10 |
申请号 |
RU20100131421 |
申请日期 |
2009.01.12 |
申请人 |
FRAUNKHOFER-GEZELL'SHAFT TSUR FERDERUNG DER ANGEVANDTEN FORSHUNG E.F. |
发明人 |
KJUKH FABIAN;KALLINGER MARKUS;FALLER KRISTOF;FAVROT ALEKSIS |
分类号 |
G10L21/02;G11B20/24;H04M9/08 |
主分类号 |
G10L21/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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