Knocking on a window. Four fast-paced knocks followed by two slower paced ones. Recorded with a zoom h6 and stereo microphone (rode ntg2). Post-processing done to increase volume.
Stuff trown in a big abandonned reveberating factory. Thrown one by one, brick, glass etc. Recorded with schoeps ab ortfrecorded on soundevice 744t48khz, 16 bits.
Made to represent glass or crystal harmonic sounds. Also uploaded a separate version without the additional low-pitched hum. Reminiscent of chest or other point-of-interest proximity sounds in major video games. Remix of https://freesound. Org/people/sam_x/sounds/27701/recombined numerous times to give it a more homogenous sound, and edited for seamless looping.