allpass.m

Version 1.0.0.0 (1.97 KB) by Dean Andersen
Allpass filter
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Updated 9 Jan 1998

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Many systems require phase compensation. An allpass filter provides just that without affecting magnitude response. This function creates a filter with a magnitude response of unity and n number of pole/zero complex-conjugate pairs spaced evenly starting at Fst and ending at Fed. The order of the allpass filter is 2n. The coefficients of the filter, b and a, are passed as output arguments. ALLPASS can run without the output arguments. This will display the Pole-Zero plot and the frequency response of the filter.

Syntax:
>>[b,a]=allpass(n,Fst,Fed,mag,Fs) or
>>allpass(n,Fst,Fed,mag,Fs)

Cite As

Dean Andersen (2026). allpass.m (https://www.mathworks.com/matlabcentral/fileexchange/59-allpass-m), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R10
Compatible with any release
Platform Compatibility
Windows macOS Linux
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Version Published Release Notes
1.0.0.0