How It Works

The Stadium PA effect is a layered signal chain implemented with the Web Audio API to emulate reflective decay, spectral shaping, and PA system coloration.

Why A Dedicated Stadium PA Filter?

Generic reverb presets rarely reproduce the compound texture of real stadium paging systems. A ballpark PA mixes architectural reflections, horn-loaded speaker roll-off, and moderate nonlinear saturation. This tool encodes those nuances as curated presets so you start from a convincing baseline and then refine.

Under the hood the chain combines calibrated delay clustering, multi-band shaping, controlled harmonic excitation, and program-dependent compression. The result preserves intelligibility while adding size, distance, and nostalgic character.

Signal Chain Overview

1. Pre-Delay: simulates initial propagation delay before reflections build.
2. Reverb / Late Reflections: convolution and feedback network approximating large enclosure tails.
3. EQ (High / Low Cut): bands limiting extended lows and highs typical of horn-loaded arrays.
4. Distortion / Saturation: a mild non-linear stage coloring transients.
5. Compression: controls dynamic range for consistent intelligibility.
6. Wet/Dry Mix: blends original articulation with spatial coloration.

Tips for Best Results

Start with a clean, mono voice recording at a moderate level, with peaks around -6 dBFS, for optimal headroom.

• Increase Pre-Delay for larger perceived venues.
• Lower High Cut for vintage horn timbre; raise it for modern clarity.
• Use modest Distortion, roughly 10-25%, to avoid harsh clipping artifacts.

Processing Constraints

All steps execute in real time; large files may consume more memory. Browser sample-rate or autoplay restrictions may affect playback.