New Google Assistant search voice

[Android Central Question]

How do I stop Google Assistant from speaking search results out loud? The new Android Google Assistant that just rolled out in October 2017 has no settings for disabling this voice. This is extremely frustrating and is an invasion of my own privacy when the search voice starts blabbing stuff out loud. Does anybody have a clue on how to disable this voice and still retain the functionality of OK Google? I'm using project fi and a Nexus 5X