Not once, DNI narrated quantum spheres that Co-Creators have set for each person. They operate in the range from 0.8 Hz to 821 Hz.
I found a neat little table at https://www.lsu.edu/deafness/HearingRange.html that compares hearing ranges from assorted animals:
Species Approximate Range (Hz)
human 64-23,000
dog 67-45,000
cat 45-64,000
cow 23-35,000
horse 55-33,500
sheep 100-30,000
rabbit 360-42,000
rat 200-76,000
mouse 1,000-91,000
gerbil 100-60,000
guinea pig 54-50,000
hedgehog 250-45,000
raccoon 100-40,000
ferret 16-44,000
opossum 500-64,000
chinchilla 90-22,800
bat 2,000-110,000
beluga whale 1,000-123,000
elephant 16-12,000
porpoise 75-150,000
goldfish 20-3,000
catfish 50-4,000
tuna 50-1,100
bullfrog 100-3,000
tree frog 50-4,000
canary 250-8,000
parakeet 200-8,500
cockatiel 250-8,000
owl 200-12,000
chicken 125-2,000
Since different experimental methods were used in these different studies, too much value should not be placed on comparing species.
As you can see, no animal can hear sounds at 0.8 Hz. So what is the point of transmitting at such low frequencies that nothing on Earth can hear it?