METHOD AND APPARATUS FOR ESTIMATING HIGH-BAND ENERGY IN A BANDWIDTH EXTENSION SYSTEM
摘要
<p>A method (100) includes receiving (101) an input digital audio signal comprising a narrow-band signal. The input digital audio signal is processed (102) to generate a processed digital audio signal. A high-band energy level corresponding to the input digital audio signal is estimated (103) based on an estimated enery of a transition- band of the processed digital audio signal within a predetermined upper frequency range of a narrow-band bandwidth. A high-band digital audio signal is generated (104) based on the high-band energy level and an estimated high-band spectrum corresponding to the high-band energy level.</p>
申请公布号
WO2009099835(A1)
申请公布日期
2009.08.13
申请号
WO2009US32256
申请日期
2009.01.28
申请人
MOTOROLA, INC.;RAMABADRAN, TENKASI V.;JASIUK, MARK A.