Construction method of frequency-selecting filter and construction method for realizing FIR-type and IIR-type filters by adopting same
A frequency-selective filter and construction method technology, applied in the information field, can solve problems such as inability to generate compilable source files, cumbersome design of frequency-selective filters, etc., and achieve the effects of improved construction accuracy and efficiency, easy adjustment, and convenient viewing
CN101860344AInactive Publication Date: 2010-10-13刘海成 +1
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Patent Information
- Authority / Receiving Office
- CN · China
- Current Assignee / Owner
- Publication Date
- 2010-10-13
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
The invention discloses a construction method of a frequency-selecting filter and a construction method for realizing FIR-type and IIR-type filters by adopting the same, relates to the technical field of information, solves the problems of fussy conventional manual design of the filter and low efficiency and low accuracy of the manual design and also provides a rapid and accurate output function which can directly use an output file in the design of an embedded system. The method comprises the following steps of: through set parameters, budgeting and regulating corresponding parameters according to the parameters to construct a filter and generate an amplitude-frequency characteristic diagram, a log magnitude-frequency characteristics diagram, a frequency-phase characteristic diagram, a unit step response diagram, a unit impulse response diagram, a group delay characteristic diagram and a zero-pole point distribution diagram; if the construction requirement is not met, returning to reset the parameters; and if the construction requirement is met, outputting the constructed filter. The invention is suitable for construction of the filters.
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