Are you using an iPhone?
Apple iPhone with Siri can do this if Siri activates but your phone is on silent. (Or Apple Watch can pick up what it thinks is hey Siri activation by accident also)
Try disabling Siri see if it stops happening.
Have had this happen a few times it mutes everything and thinks it in phone call mode.
Usually goes away once nothing happens but if you continue talking or cursing at the system it may stay listening to you.
|