Registered
NOISE CANCELLATION APPARATUS AND METHOD
- Inventors
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Tae Joong Kim, Kim Ju-Yeob, Cho Han Jin
- Application No.
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14681187 (2015.04.08)
- Publication No.
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20150294667 (2015.10.15)
- Registration No.
- 9583120 (2017.02.28)
- Country
- UNITED STATES
- Project Code
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12VD1900, Development of HW/SW Open Platform for Digital Media Hub providing D2D connection and Real-time Speech Recognition,
Tae Joong Kim
- Abstract
- Disclosed herein is a noise cancellation apparatus and method, which select in advance parameters to be used for noise cancellation in a reference voice signal section by generating a reference voice signal in advance before a voice signal is generated, thus improving noise cancellation effects. The noise cancellation apparatus includes a parameter initialization unit for determining an initial value of a parameter to be used for noise cancellation, based on reference signals filtered for respective frequencies, a parameter estimation unit for receiving the initial value of the parameter, and estimating the parameter in response to signals that are input after being filtered for respective frequencies, a gain estimation unit for calculating gains for respective frequencies based on the parameter from the parameter estimation unit, and a gain application unit for cancelling noise by applying the gains to the signals that are input after being filtered for respective frequencies.
- KSP Keywords
- Advance parameters, Application unit, Gain estimation, Initial value, Noise cancellation, Parameter estimation, Parameter initialization, Signal Section, Voice signal