Limit Cycles on SignalForge Engineering Noteshttps://blog.signal-forge.app/tags/limit-cycles/Recent content in Limit Cycles on SignalForge Engineering NotesHugoen-usThu, 26 Feb 2026 00:00:00 +0000Limit Cycles in IIR Filters: Hidden Instability in Fixed-Point DSP Systemshttps://blog.signal-forge.app/posts/limit-cycles-iir-filter-fixed-point/Thu, 26 Feb 2026 00:00:00 +0000https://blog.signal-forge.app/posts/limit-cycles-iir-filter-fixed-point/Limit cycles cause persistent oscillations in fixed-point IIR filters even with zero input. This article explains the numerical causes and engineering strategies for mitigation.Embedded DSP Filter Stability: FIR vs IIR, High-Q Risk, Fixed-Point Failure Modeshttps://blog.signal-forge.app/posts/fixed-point-dsp-filter-stability/Thu, 19 Feb 2026 00:00:00 +0000https://blog.signal-forge.app/posts/fixed-point-dsp-filter-stability/A practical engineering framework for stability in embedded DSP filters: mathematical vs numerical vs system stability, high-Q IIR risk, fixed-point limit cycles, FIR vs IIR tradeoffs, and deployable decision rules.