The roar makes people listen to the hair-raising of the tyrant dinosaur

The cry of not the roaring sound but the low rumble, but still enough to scatter fear.

Naturalist Chris Packham visits Julia Clarke, a vertebrate paleontologist at the University of Texas in The Real T.re x documentary program to test the hypothesis of real tyrannical dinosaurs. the release of bird-like and lizard-like calls over today's species, Telegraph reported on December 9.

"The scariest sounds in today's natural world come from predators but the wolf's howl or the roar of a lion, but experts suspect that T-Rex doesn't sound like them , " Packham to speak.

Chris Packham and Julia Clarke learn the cry of the tyrant dinosaur.(Video: BBC).

Dinosaurs are ancestors of birds and are closely related to short snout crocodiles and common crocodiles, so Professor Clarke uses the sound of the platypus with a distinctive resonance and the tone of a river crocodile. Yangzi to estimate the volume emitted by T-Rex.

When Professor Clarke turned up the sound to correspond to the size of the giant dinosaur, the low-pitched sound of a low-pitched sound conjured up the ominous and scary enough to make the listener's hair stand.

According to Professor Clarke, our lack of sympathy for such sounds can be traced back to the innate memory of long-forgotten predators.

"I have a feeling this sound is causing fear. People think the new roar is really scary, but this is the scariest sound you've ever heard. I don't know if we have a reaction to it. I doubt the low-frequency sound, but I'm not surprised. In the animal world, the bass sound is more than the true sign of the larger body size, so the sound we hear is similar. A real big animal , " said Professor Clarke.

Tyrant dinosaurs may not even need to open their mouths to make scary sounds. For birds and reptiles, it is common to make a sound when it is shut. Its cries may be low enough to feel clearly instead of listening.

Researchers can estimate how deep the cry of a tyrant dinosaur is when analyzing what dinosaurs hear. Dr. Larry Witmer at Ohio University, USA, scans the skull of a T-Rex fossil that still maintains the contours of the auditory organ.

The cry of a tyrant dinosaur is unlike today's carnivorous mammals.(Artwork: Wordpress).

"We can gather information from looking at the inner ear structure. The results show that T-Rex has a very sensitive hearing organ, they are particularly sensitive to low-frequency sounds, even lower. listening threshold of many people, " said Dr. Witmer.

Low-pitched low-pitched voices can be transmitted over large distances. Today's large mammals can "talk" at a distance of several kilometers, while whale singing can be obtained thousands of kilometers away from the source.

"There is a primitive fear associated with such sounds. T-Rex does not need to roar, it needs the ability to communicate in large areas. They can overcome great distances with species. This is probably the first time after 66 million years that this sound is on Earth, it's based on speculation, but we use the available evidence. is the scariest sound I've ever heard , " explains Packham.