Neither predator use their roar to “freeze” their prey during a hunt. This is a myth.
Both lions AND tigers have what’s called infrasound in their roars, a subsonic frequency (below 20hz) that is felt, not heard. Infrasound can cause feelings of dread, fear, and panic. It’s also associated with dizziness, headaches, and overall sickness.
Above: impala faints at sight of lion, roar clearly not needed to “freeze” them
But neither lions nor tigers roar while hunting to “freeze” their prey. They roar for territory, to locate pride members, intimidate, find mates, etc. When a lion or tiger hunts, they are absolutely silent. They have to be to sneak up on prey that have evolved to have incredible senses of smell, hearing, and eyesight.
There is absolutely no evidence to suggest tigers or lions growl or emit subsonic frequencies while stalking to freeze their prey. And people do bring microphones, microbarometers, and other devices into the field to make this assessment. What they find is what i stated earlier, they are absolutely silent while hunting.
Which makes sense because roaring would immediately give their position away; and while low subsonic growls may not be heard, they are felt which immediately puts prey on edge and alerts them to danger. Only sometimes do prey actually freeze as a result of these frequencies.