Dataset for: “Low-Latency Stage-Adaptive Cascade Architecture for Real-Time Non-Stationary Noise Filtering”. Contents (.wav):- Experimentally acquired PCG data (primary, reference, denoised output) – Figure 6- Simulated sinusoidal datasets with Gaussian/low-frequency/combined noise (clean, noise, primary, output) – Figures 3–5- Simulated PCG datasets (clean, noise, noisy primary, reference) for quantitative evaluation – Tables 1–4 (SNR: 1 dB and 4 dB) These files support the results reported in Figures 3–6 and Tables 1–4 of the associated manuscript, “Low-Latency Stage-Adaptive Cascade Architecture for Real-Time Non-Stationary Noise Filtering”.