EP Signal Processing Circuit Path for Noise Filtering Integrity

The patent replaces hardware-based mechanical filtering with software-based digital signal processing. The system acquires raw cardiac signals without aggressive hardware filtering, then applies digital filters and processing algorithms in software to reduce noise while preserving signal integrity. This substitution allows flexible, adaptive noise reduction that maintains the accuracy of low-amplitude high-frequency signals critical for atrial fibrillation and ventricular tachycardia detection.

The patent segments the signal processing functionality into modular software components that can be independently applied to different cardiac signals. Each processing algorithm (filtering, noise reduction, feature extraction) operates as a separate module that can be selectively enabled or disabled. This modular architecture allows multiple algorithms to run simultaneously with reduced computational overhead and easier system management, maintaining signal quality while controlling complexity.

The patent performs preliminary signal conditioning and preprocessing operations as signals are acquired, preparing them for subsequent analysis. Low-pass filtering and basic noise reduction are applied in real-time during signal acquisition, while more computationally intensive algorithms are applied selectively based on detected signal characteristics. This preliminary processing reduces the computational burden on subsequent analysis stages, enabling effective real-time processing of multiple signals without excessive computational strain.