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. Play video content

The caller tells the dispatcher they think someone is dead because they heard a female scream ... and they give D4vd's Texas address and confirm it later on the call.

In hindsight, it sounds like a clear prank ... but in the moment, law enforcement was dispatched and they swarmed the home where D4vd's parents live. Play video content

The call was made September 18, just days after the body of

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