In an exciting leap forward, the Japan Telegraph and Telephone Corporation (NTT) has unveiled the world’s first wideband noise-canceling technology tailored for open-ear headphones. This groundbreaking innovation presents a remarkable listening experience by mitigating ambient noise while allowing users to remain aware of their surroundings in bustling urban environments.
The core of this advancement is the establishment of Active Noise Control (ANC) technology. This system adeptly reduces noise across a broad frequency range of 100 to 3,000 Hz, ensuring that users can enjoy crisp and clear audio, even amidst noise chaos. This achievement was made possible by developing new designs for the headphone’s microphone and speakers, along with sophisticated software processes that minimize both acoustic and mechanical delays typically present in ANC systems.
Unlike traditional noise-canceling devices, these open-ear headphones maintain a low-burden design, making them comfortable for extended wear even in noisy environments. NTT’s innovation not only enhances the audio experience but also integrates seamlessly with Acoustic XR technology. This tech fuses virtual audio from headphones with the real-world sounds, paving the way for immersive audio experiences.
This innovative technology will debut at the NTT R&D Forum 2024, scheduled for November in Tokyo. This event will provide a sneak peek into how these open-ear headphones leverage this new noise-canceling tech to create a personalized sound zone (PSZ). PSZ technology ensures that only the sounds you desire are heard, while unwanted noises are effectively filtered out, making it perfect for use in public and office settings.
Historically, open-ear headphones have struggled with noise cancellation, especially above the 1,000 Hz threshold, where the human ear is most sensitive. NTT’s ANC technology triumphs by addressing high-frequency noise, thus preventing users from compensating with higher volumes, which can lead to hearing damage.
Achieving such a feat required overcoming significant challenges. By reducing acoustic delays—sound’s travel time to the ear—and mechanical delays—time for hardware to process these sounds—NTT has managed to enhance ANC performance significantly. This includes an impressive noise reduction achievement, suppressing volume levels by up to 13.7 dB within the crucial 1,000 to 3,000 Hz range.
Looking ahead, NTT is gearing towards bringing this revolutionary technology to the commercial market. They envision services that integrate this advanced ANC technology with acoustic XR, offering immersive audio guides and entertainment experiences that blend virtual and real sounds seamlessly.
With this revolutionary approach to noise cancellation, NTT isn’t just changing how we listen; they’re reshaping the entire landscape of personal audio experiences. Keep an eye out as these innovations begin transforming the world of open-ear headphones, taking audio experiences to unprecedented levels.
