Strange sounds
What is that sound? At 03:50 the first sound - not the car alarm - =) and at 05:15 the sound is heard more clearly.

My daughter Frida has recorded the movie. My voice is also heard in the background, she woke me up. I had never heard of anything like before.

The birds silence under the sound and a car alarm goes on, and you feel clear vibration of the sound waves.


Comment: The sounds can be heard at: 3:50, 5:15, 6:40 and 8:16.



Anyone who knows?

Thank you for your answers!
Sincerely/Chattis