Fixed-Point Second-Order Bandpass Filter Implementation for Embedded Systems

A 3.3 KB text file authored by Jamie Davis and last updated on 2026-05-31. It contains the source code for a second-order infinite impulse response (IIR) bandpass filter designed for bare-metal embedded targets. The filter uses Q16.16 fixed-point arithmetic and is engineered for zero-heap, real-time operation.

Use Cases

• Isolate narrow-band telemetry signals, such as biometric pulse waves, based on the described bandpass filtering capability.
• Suppress out-of-band noise in rotational frequency signature analysis based on the filter's steep roll-off attenuation.
• Implement a zero-heap, zero-copy signal processing routine in embedded systems based on the described memory-bounded architecture.

Strengths

• Zero-heap memory usage, as explicitly stated in the description.
• Includes overflow protection via 32-bit hardware saturation clamping.
• Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0).

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Jamie Davis (Independent Systems Architect)

Freshness

Last updated 2026-05-31 20:52:58; freshness should be verified.