【How-to】How to block infrasound - Howto.org

If you have a first or second generation Echo Show, Echo Show 5, Echo Show 8, Echo Show 10, or Echo Spot, swipe down from the top of the screen, then tap Settings. Tap Device Options, then Reset to Factory Defaults. If you have an Echo Show, press and hold the Mute and Volume Down buttons for about 15 seconds.