PROBLEM TO BE SOLVED: To decide the coefficient of a digital filter by quantizing each coefficient calculated by a computer by a prescribed quantization method (rounding off, rounding up, rounding) so that a change (deterioration) from a desired frequency characteristic.AKEDA YOSHIHIRO...
filter coefficient element on the basis of the specified coefficient parameter when the specified filter coefficient element is not selected from among the plurality of filter coefficient elements stored in the coefficient storing unit, thereby enabling to efficiently set a digital filter in response to...
w = allpass2wdf(a) accepts a vector of real allpass polynomial filter coefficients a, and returns the transformed coefficient w. w can be used with allpass filter objects such as dsp.AllpassFilter, and dsp.CoupledAllpassFilter, with Structure set to 'Wave Digital Filter'. W = allpass...
a = wdf2allpass(w) accepts a vector of transformed real allpass coefficients, w, and returns the conventional allpass polynomial version a. w is used by allpass filter objects such as dsp.AllpassFilter, and dsp.CoupledAllpassFilter, with Structure set to 'Wave Digital Filter'. A = wdf...
w = allpass2wdf(a) accepts a vector of real allpass polynomial filter coefficients a, and returns the transformed coefficient w. w can be used with allpass filter objects such as dsp.AllpassFilter, and dsp.CoupledAllpassFilter, with Structure set to 'Wave Digital Filter'. W = allpass...
filter objects such asdsp.AllpassFilteranddsp.CoupledAllpassFilter, withStructureset to'Wave Digital Filter'. Every cell ofWmust contain a real vector of length 1,2, or 4. When the length is 4, the second and fourth components must both be zero.Wcan be a row or column vector of cells...
An analysis is presented of filter frequency errors due to coefficient quantization in direct-form realizations of zero-phase two-dimensional finite-impulse response (2-D FIR) digital filters. Applying a method already used for 1-D FIR digital filters, the case of 2-D FIR filters with octagonal...
Time domain analysis and design of multirate wave digital filters A generalized time domain approach is described for the analysis and design of wave digital filters capable of performing sampling rate alterations whether integer or non-integer. It is based on sequential computation of the filter's...
A digital filter for generating digital output signals from information signals in accordance with a predetermined transfer characteristics includes a coefficient number generator for supplying digital numbers which indicate the values of coefficients which represent the transfer characteristic. The coefficient ...
A method for slewing a bandwidth characteristic of a digital filter within a range between a first bandwidth characteristic and a second bandwidth characteristic. The dig