Patent ID: 6701335
Filing Date: 2004-03-02
Classification: G01R,H03H

Abstract:
A signal processing system capable of compensating for the channel response characteristics of an input waveform, comprising:input means for inputting input specifications for specifying the design of a filter, including: channel response characteristics defining the response characteristics of a channel used to acquire said input waveform; and user specifications for specifying a desired frequency response and a degree of compliance to the desired frequency response; a filter builder for generating coefficients for said filter and outputting final performance specifications, having: a compensation filter generator for generating coefficients corresponding to a compensation response on the basis of the inverse of the channel response characteristics; and a response filter generator for generating coefficients corresponding to a combination of an ideal response and a noise reduction response on the basis of the user specifications; and said filter for filtering said input waveform and outputting an overall response waveform having said desired frequency response, comprising: a filter coefficient cache for storing the coefficients generated by said filter builder; a compensation filter portion for filtering said input waveform using the coefficients stored in said filter coefficient cache corresponding to said compensation response; and a response filter portion having a response filter stage and a noise reduction stage for filtering the compensated waveform output from said compensation filter portion and outputting said overall response waveform; said response filter portion filtering using the coefficients stored in said filter coefficient cache corresponding to said combination of said ideal response and said noise reduction response.