Here's the 911 audio from the "swatting" call at D4vd 's family home in Texas ... and it sounds like the person phoning in a bogus report of a fatal shooting is using a special device to mask their voice. TMZ obtained audio from last month's swatting incident ... and you hear the caller, seemingly using a voice-changer, claim they heard gunshots outside D4vd's home. The caller tells the dispatcher they think someone is dead because they heard a female scream ... and they give D4vd's Texas