Google uses audio saved when this setting is on to develop and improve its audio recognition technologies and the Google services that use them, like Google Assistant. This setting affects anywhere you’re signed in to Search, Assistant, and Maps, for example, the Assistant on both the Google Assistant app and a Google Home smart speaker. This voice and audio activity setting is off unless you choose to turn it on.
With this optional voice and audio activity setting, you can also save audio recordings with Web & App Activity when you interact with Google Search, Assistant, and Maps. It can include associated info like location. Web & App Activity saves things you do on Google sites, apps, and services in your Google Account on Google servers. For example, if you touch the mic icon to search by voice, Google’s audio recognition technologies translate what you say into words and phrases that Search looks up in an index to give you the most relevant results. When you speak to Google services, Google uses its audio recognition technologies to process your audio and respond to you.
About this voice & audio activity setting For example, less audio may be needed for some languages over time. Google may delete audio sooner than the timeframe you choose, once it's no longer needed for developing and improving Google’s audio recognition technologies and the services that use them. Tap the button for how long you want to keep your activity Next Confirm.Above your activity, in the search bar, select More Keep activity for.