Title: Method for high frequency reconstruction and apparatus thereof
Application Number: 200610146820 Application Date: 2006.11.23
Publication Number: 1975860 Publication Date: 2007.06.06
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G10L19/00;H03M7/30;G11C7/16
Applicant(s) Name: Samsung Electronics Co., Ltd. Address:
Inventor(s) Name: Arora Manish
Attorney & Agent: guohong xi liuyi qing
Abstract:
    A method and apparatus to restore a high frequency component. A correlation between an input signal and previously stored noise samples is obtained and a bandwidth of the input signal is detected according to the correlation. The detected input signal bandwidth is split into a predetermined number of sub-bands. A level of high frequency sub-band signals generated by performing a predetermined nonlinear operation on the split sub-bands is controlled in response to energy levels of the high frequency sub-bands to obtain restored signals. The restored signals and the input signal are combined to generate a target audio signal.
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