He uses Neanderthal vocal tracts to mimic their voice . Neanderthal man apparently sounded like a frog croaking or a human burping when talking . Result sounds like a part croaking frog or a human burping . Plan is to eventually learn an entire Neanderthal speech .
He uses Neanderthal vocal tracts to mimic their voice . Result sounds like a part croaking frog or a human burping . Plan is to eventually learn an entire Neanderthal speech .