NOISE CANCELLATION APPARATUS AND METHOD

摘要

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.

主权项

1. A noise cancellation apparatus, comprising:
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 from the parameter initialization unit, 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 from the gain estimation unit to the signals that are input after being filtered for respective frequencies.