Title: Input sound processor
Application Number: 200510053051 Application Date: 2005.03.08
Publication Number: 1667702 Publication Date: 2005.09.14
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G10L15/20,H03G3/20,G01C21/00
Applicant(s) Name: Alpine Electronics Inc. Address:
Inventor(s) Name:
Attorney & Agent: huang jianfeng
Abstract:
     An input sound processor compares power at each frequency component of an input sound with a reference value, and sets multiplication points indicating frequency components at which the total power of the input sound is to be determined. A product-sum operation is performed at the multiplication points on the power at each frequency component and the square amplitude of each filter coefficient indicating the transfer characteristic from a loudspeaker to a microphone (100) to estimate the total power of the input sound at the position of the microphone (100).
Time: 19