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signal-processing
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skills/quant-methods/signal-processing/SKILL.md
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# Signal Processing
name: signal-processing
description: Signal processing for financial data — wavelets, Fourier analysis, noise filtering. Use when extracting signals from noisy financial data.
## When to Activate
- User wants to decompose price series into trend, cycle, and noise components
- Detecting dominant cycles or periodicities in financial data
- Denoising financial signals while preserving important features
- Extracting multi-scale information (short-term noise vs long-term trend)
- Filtering price data for cleaner technical indicators
- Analyzing frequency-domain properties of returns
## First Questions