Matlab Support for Least-Squares FIR Filter Design

• firls - least-squares linear-phase FIR filter design for piecewise constant desired amplitude responses. Also designs Hilbert transformers and differentiators.

• fircls - constrained least-squares linear-phase FIR filter design for piecewise constant desired amplitude responses. Constraints provide lower and upper bounds on the frequency response.

• fircls1 - constrained least-squares linear-phase FIR filter design for lowpass and highpass filters. Supports relative weighting of passband and stopband error.

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Order a Hardcopy of Spectral Audio Signal Processing

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About the Author: Julius Orion Smith III
Julius Smith's background is in electrical engineering (BS Rice 1975, PhD Stanford 1983). He is presently Professor of Music and Associate Professor (by courtesy) of Electrical Engineering at Stanford's Center for Computer Research in Music and Acoustics (CCRMA), teaching courses and pursuing research related to signal processing applied to music and audio systems. See http://ccrma.stanford.edu/~jos/ for details.