How does it handle high-order IIR filters?

To ensure numerical stability, the skill prioritizes Second-Order Sections (SOS) and Cascaded Transfer Function (CTF) forms over high-order [b,a] polynomials.

Can this skill handle real-time streaming filters?

Yes, the skill specifically asks for the operating mode and generates causal, stable designs (often using DSP System Objects) suitable for real-time applications.

What toolboxes are required to use this skill?

This skill primarily utilizes the Signal Processing Toolbox and the DSP System Toolbox in MATLAB.

Does it support zero-phase filtering?

Yes, for offline batch processing, the skill can implement zero-phase filtering using the filtfilt function to preserve signal shape and eliminate phase shift.

MATLAB Digital Filter Design

Name: MATLAB Digital Filter Design
Author: matlab

bymatlab

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データサイエンスとML

Designs, implements, and validates high-performance digital filters in MATLAB for signal processing and DSP applications.

概要

This skill transforms Claude into a digital signal processing expert, guiding users through the end-to-end process of filter design in MATLAB. It automates complex tasks such as signal analysis, frequency specification gathering, and the selection of optimal architectures like FIR or IIR (using SOS/CTF forms for stability). Whether you are developing for real-time streaming or offline batch processing, the skill ensures technical rigor by requiring sample rate pinning, conducting pre-design signal analysis, and providing visual verification through MATLAB's Filter Analyzer to compare magnitude, phase, and group delay.

主な機能

Efficient architecture selection for narrow transition bands (trans_pct < 2%)
Intelligent mode selection for streaming (causal) or offline (zero-phase) processing
Automated FIR and IIR design (lowpass, highpass, bandpass, bandstop, notch)
Pre-design signal analysis for interference detection and spectrum characterization
22 GitHub stars
Visual and numerical validation using Filter Analyzer and performance metrics

ユースケース

Designing real-time, low-latency filters for embedded DSP systems
Cleaning up noisy sensor data or removing power-line interference (60Hz hum)
Applying zero-phase distortion filtering to historical data sets for analysis

概要

主な機能

Efficient architecture selection for narrow transition bands (trans_pct < 2%)
Intelligent mode selection for streaming (causal) or offline (zero-phase) processing
Automated FIR and IIR design (lowpass, highpass, bandpass, bandstop, notch)
Pre-design signal analysis for interference detection and spectrum characterization
22 GitHub stars
Visual and numerical validation using Filter Analyzer and performance metrics

ユースケース

Designing real-time, low-latency filters for embedded DSP systems
Cleaning up noisy sensor data or removing power-line interference (60Hz hum)
Applying zero-phase distortion filtering to historical data sets for analysis