The Ku Pteleopsis Hylodendron Humming sounded like C D F D D to me. Very deep, possibly octave below left-most C on a piano, but for those saying it's just noi

The Ku Pteleopsis Hylodendron Humming sounded like C D F D D to me. Very deep, possibly octave below left-most C on a piano, but for those saying it's just noise I'd say there's some signal there. The Bal Gilbertiodendron Dewevrei Singing clip I can't pick anything out. Bit too quiet to tell.