Challenge

• As electric vehicles eliminate traditional engine noise, road, wind, and tire sounds become more prominent
• Goal: to deliver first-class acoustic comfort and a sensory audio experience without compromising design

Integrating Silentium’s Quiet Bubble™ ARNC into NIO’s Flagship ET9

Silentium’s cutting‑edge Quiet Bubble™ Active Road Noise Cancellation (ARNC) technology is integrated into NIO’s flagship ET9 to elevate cabin refinement to executive‑class levels. The system suppresses low‑frequency disturbances up to 1,000 Hz, achieving peak noise reduction of 14 dB and delivering exceptional cabin tranquility.

The ET9’s acoustic platform includes 35 speakers, seven electric sunshades, and a 360° active noise‑cancellation system. Silentium’s ARNC software enhances this architecture by dynamically adapting to road conditions and passenger locations, ensuring consistent quietness across all driving scenarios.

By combining Silentium’s real‑time noise‑neutralization algorithms with NIO’s LYRA 8.2.4.8 immersive sound system and SkyRide intelligent chassis, the ET9 delivers a serene, first‑class acoustic experience for every occupant.

Technology Impact:

Silentium’s Quiet Bubble™ ARNC significantly reduces low‑frequency road noise, enabling both source and noise‑path cancellation for a calmer, more refined cabin.

The system also powers NIO’s unique stress‑relieving, ear‑level surround mode, enhancing long‑distance comfort and overall passenger well‑being.

By integrating Quiet Bubble™ with the ET9’s 35‑speaker architecture, 360° noise‑control system, and SkyRide intelligent chassis, the vehicle delivers consistent, executive‑class quietness across all speeds and road conditions.