Just My Alexa - SOUTH PARK: POST COVID: THE RETURN OF COVID

If you watch [this video] you will get Alexa waking up. Meanwhile [link] and [link] and don't. Play them on a TV or tiny computer speaker. You can hear 3 kHz quite well. [link] And we can hear up to 20 kHz when young (that's 3 octaves higher than 3 kHz). [link] And while this is audio people talking about sound... [link] > 3k is commonly the most sensitive frequency for human ears - we use it for testing wow and flutter on tape machines; you can hear pitch variation there easiest. 3k is a ballpark, but a good one - I think it works anywhere in that region 2-4k, but usually 3k is THE ONE. > When I have a harsh fuzz guitar or trashy cymbal, I often try to just tuck down the 3k region, and suddenly it no longer covers everything. It still sounds thick and harsh, but nothing kills your ears. > ... > Cutting at 3k can help hide out of tune instruments and bad pitch on vocals as well. --- Late edit. Extracting the audio of the "Alexa looses her voice" and sending it into [link] - watch at the range around 5.1 kHz (about the center of the 3 kHz to 6 kHz octave). It starts out with: [link] That spike is the actress saying "Alexa" and you can see the unnatural gap in that range. Also, there is sound in that mp3 all the way out to 14 kHz.