Badger's Disguise Voice

You make your voice sound like the voice of another person until the spell ends or until you use your action to dismiss it. You can change the tone or pitch but not the volume of your voice. This spell has no effect on the language you speak. Otherwise, the extent of the illusion is up to you.

The changes wrought by this spell fail to hold up to close inspection with other senses. To discern that your voice is disguised, a creature can use its action to make an Intelligence (Investigation) check against your spell save DC. The dungeon master may determine this check has advantage if the creature knows what you normally look and sound like.