Your entire Google voice search history is stored here (and you can delete it!)
This shouldn't scare you all that much, as Google is know for its data-collection practices, and the Voice & Audio Activity page is just an effort on the company's part to be more transparent about said practices. Once you are logged into your Google account, the page presents you with a history of all your voice interactions with the platform and gives you the opportunity to delete all of it. It is not as simple as saying, “Okay Google, delete my voice search history,” but it would have been funny if Google responded to such requests with, “I'm sorry, Dave. I'm afraid I can't do that,” in a HAL 9000 voice. Right? Okay, maybe not. However, wiping your voice search history can be done very easily by going to the Voice & Audio Activity page linked below, clicking on the three-dot menu in the top right corner of the screen, and selecting “Delete activity by.” From there, you can wipe all your voice search data since the dawn of time and sleep sound!
Click on the three vertical dots in the top right corner of the screen and select Delete activity by from the drop-down menu
Choose a time frame and click DELETE. Poof, that's it!
source: Google
Things that are NOT allowed: