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November 21, 2023 (2y ago)
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  1. Ask HN: How do browsers isolate internal audio from microphone input?

    I've noticed an interesting feature in Chrome and Chromium: they seem to isolate internal audio from the microphone input. For instance, when I'm on a Google Meet call in one tab and playing a YouTube video at full…

    238 points 105
  2. Ask HN: How Does Alexa Avoid Interrupting Itself When Saying Its Own Name?

    I've noticed that Alexa doesn't interrupt itself when it says "Alexa," but it does respond when someone else says it. How does it achieve this? Here are a few questions I have: Self-Recognition: How does Alexa…

    6 points 60