While I can&#x27;t speak to what AndrewUnmuted is referring to with Amazon, I know Google Now transmits more than just the command &#x2F; audio after the wake word: it actually transmits 2 - 3 seconds <i>before</i> and including the wake word.<p>You can confirm this yourself: if you visit this page at Google, you can hear every Google Now voice query you&#x27;ve made, and verify it includes audio before &amp; including the &quot;OK Google&quot; trigger phrase:<p><a href="https:&#x2F;&#x2F;history.google.com&#x2F;history&#x2F;audio" rel="nofollow">https:&#x2F;&#x2F;history.google.com&#x2F;history&#x2F;audio</a>