Plucking and strumming low strings on a piano with the sustain pedal depressed. A nice long decay at the end. Apologies for bumping the mic and the snickering at the end. Recorded with an m-audio 24/96.
This is the sound of a man laughing close mic'd with an audio technica 4050 condensor microphone and recorded into the zoom h4n. The audio was then rolled off with a high pass filter at 80 cycles per second.