knocking on glass window, actually a tube television screen
This recording is from a range of SFX I recorded for a piece of music I composed using only stuff ...
Hitting wooden beams with a cardboard tube.
Hitting the mouthpiece of my trombone, recorded with zoom recorder by group JAA
A variety of sounds made by hitting wooden beams and a vent with a cardboard tube.
An assortment of sounds made by hitting a metal vent and wooden beam with a pvc pipe.