Title: Low pass continuous adjustable filter and filtering method
Application Number: 200610130270 Application Date: 2006.12.15
Publication Number: 1976224 Publication Date: 2007.06.06
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H03H17/02
Applicant(s) Name: Tianjin Univ. Address:
Inventor(s) Name: Guo Jichang;Li Qiang;Li Xiangping
Attorney & Agent: jiangtian hua
Abstract:
    A low-pass continuous adjustable filter consists of DSP, A/D converter, D/A converter, input and output synchronous FIFO buffer regions, storage and clock generator. It is featured as storing calculated filtering coefficient of FIR filter and operation subprogram of FIR filtering in storage, calculating a sampling frequency by DSP according to inputted passband cut-off frequency requiring to be adjusted, varying output frequency of clock generator and storing adjusted passband cut-off frequency into storage. Its filtering method is also disclosed.
Time: 12