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Programmer @bryanwangxin finds Apple filters 3 to 6 kHz audio in keynotes to prevent triggering Siri

Spectrogram analysis confirmed targeted notches during trigger-word mentions

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xin
Minh Nhat Nguyen
Delip Rao e/σ#111
Original postMinh Nhat Nguyen#1274
xin@bryanwangxin

苹果的发布会视频中，但凡有说到 Siri 的地方，都会切掉音频中 3k、4k、5k、6kHz 频率部分，以防观看视频时附近的苹果设备激活 Siri。

4:32 AM · Jun 9, 2026 · 1.6M Views
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Delip Rao e/σ@deliprao

as an ex-speech researcher, this is so 😍

xin@bryanwangxin

苹果的发布会视频中，但凡有说到 Siri 的地方，都会切掉音频中 3k、4k、5k、6kHz 频率部分，以防观看视频时附近的苹果设备激活 Siri。

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Programmer @bryanwangxin finds Apple filters 3 to 6 kHz audio in keynotes to prevent triggering Siri · Digg