Title: Bass boosting processing method and device
Application Number: 200510121069 Application Date: 2005.12.20
Publication Number: 1801611 Publication Date: 2006.07.12
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H03G5/16,H04R3/04,H04R5/04
Applicant(s) Name: Shenzhen Languang Electronics Group Co., Ltd. Address: 518031
Inventor(s) Name: Lin Yan, Zhou Yaoliang
Attorney & Agent: song xianggong
Abstract:
     The method for bass boosting treatment comprises: transforming the base frequency signal on low-frequency range into effective combination of second, third and fourth harmonic signals with loudness matched with base frequency signal. The opposite device comprises: a bandpass filter to filter input signal and obtain low-frequency signal, a multiplier to multiply the low-frequency signal self and low-frequency signal with second, third and fourth harmonic signals respectively, an energy detector for low-frequency signal, a auto-gain control module to calculate output control signal according to detector result and control time-varying gain of said harmonic signals, a constant attenuator to control fixed gain of harmonic signals, and a summator to add effective harmonics. This invention is simple but with well effect.
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