To the problem of interference and base-line excursion, this paper proposes an adaptive comb filter with Phase-Locked Loop(PLL), besides digital comb filters.

Based on principals of interference of acoustic waves and simplified digital delay-line,comb filter effect induced by superposition of reflections from steps is presented.

The transfer matrix method is used to study optical comb filter properties of one-dimensional multilayer photonic crystal.

The comb filtering effect which was caused by improper use of microphone during record and on-site sound amplifying was analyzed combined with acoustic theories of modern musi

Finite impulse response comb filter based on fractional delay;

The analysis for comb filter based on crystal birefringence;

A design method for comb filter is proposed,it is demonstrated that the traditional time domain averaging is just a special case of the general comb filter and its performance is influenced by the error of estimating period only.

Optimization calculation of interleaver made of cascade Mach-Zehnder fiber interferometer;

Interleaver Design Based on Phase Characteristics of Fabry-Perot Cavity;

Fabry-Perot etalon must be thermally stable when it is used to make interleaver.