Description: a wok lid is hit creating a swell resonant sound; recorded with a pair of dpa 4006-tl omnidirectional microphones.

Description: scratching a metal plate with a stone.

Description: hitting a metal rail with a pen - average pitch f#2 - recorded with se electronics se3 microphone on hypercardioid mode - mono.

Description: hitting a metal rail with a pen - average pitch f#2 - recorded with se electronics se3 microphone on hypercardioid mode - mono.