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Part 3 – Active Noise Cancellation For Your Helmet

We’ve seen how motorcycle helmet noise arises, why your helmet doesn’t prevent it from happening, and how active versus passive noise cancellation handle different parts of the frequency spectrum more effectively. Now we’d like to talk about how active cancelling can help your ride.

Active Noise Cancelling

Part 2 – Passive Versus Active Noise Cancelling

In the realm of sound-blocking, ear-muff style protection offers passive defense by forming an air-tight seal. Helmets, however, lack this seal, allowing low-frequency noise to penetrate. Passive methods falter against low frequencies, whereas Active Noise Cancellation (ANC) excels, particularly below 1 kHz.

A diagram of ANC

Demystifying Active Noise Cancellation: How it Works and Why it’s Challenging

In this blog series, we explore Active Noise Cancellation (ANC) and its challenges. ANC works by generating “anti-noise” to cancel incoming sound, but achieving precision is tough. With varying frequencies and changing sine waves, cancelling noise without losing desired sounds poses complexities we’ll delve into later. Stay tuned for more insights!

Unveiling the Impact of Motorcycle Riding on Hearing

As an experienced R&D engineer, I was accustomed to analyzing performance data without judgment. But the recent motorcycle ride testing had a different impact, especially since I had been the test rider using my own helmet and bike. The results were worse than expected, revealing extreme in-ear sound pressure levels (SPLs) that hit home, as my own ears were affected.