BuzziCloud enhances acoustic comfort by targeting the full speech frequency spectrum, absorbing sound where it naturally accumulates: overhead. Independently tested and certified by Peutz Laboratory for Acoustics (EN-ISO 354:2003), BuzziCloud achieves Sound Absorption Class A, the highest classification under ISO 11654, making it one of the most effective ceiling-level acoustic solutions available. Performance is strong across the entire frequency range, from 250 Hz upward, with near-total absorption at 2kHz and 4kHz. Crucially, these results were measured with a 200mm construction height, reflecting real-world ceiling grid installation with an air gap behind the panels. That air gap is a meaningful contributor to performance, particularly at lower frequencies, which is why BuzziCloud significantly outperforms flat wall-mounted solutions of the same material. The PET Felt surface reduces reverberation, controls echo, and improves speech clarity to contribute to calmer, more productive environments. Summary ratings: • αw = 0.90 — Sound Absorption Class A (ISO 11654) • NRC = 0.80 — Noise Reduction Coefficient (ASTM C423) • SAA = 0.83 — Sound Absorption Average (ASTM C423)