Technischer Hintergrund zu Airpods 4 (active noise cancelling ohne Gummipöppel)

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https://www.heise.de/news/Apples-kleines-Geheimnis-Deshalb-beherrschen-die-offenen-AirPods-4-ANC-9946448.html
https://www.engadget.com/audio/headphones/weve-got-to-make-it-happen-how-apple-designed-airpods-4-for-effective-anc-130008844.html?guccounter=1&guce_referrer=aHR0cHM6Ly93d3cuaGVpc2UuZGUv&guce_referrer_sig=AQAAAGITPlgzynkptjq8U1nPpiSaOiv1 JOgQD7LHKlhLw4xIciIPXkG6_w1kV8akCJooCutp4nIZNoYgW-QHXMyEs0m8EKsPzWuSRe2Ts8m_f1JWZwQ1gC6Dj7ly0XVFQMdR zaIwz3d54Kn83QuEH7XG5NfHNXxlRPbG1XMQs-9d1xUP