I made a ball of aluminium paper. This is the sound when i undid the ball and tried to make it smooth. // sonido cuando deshago y aliso una bola de papel de aluminio.
Small tinggg going on for a while after sharp start. Recorded at home 26th of june 2014 with sharp md-sr50h(s)+ it's normal microphones, imported via analog (unfortunately*)into pc and saved with free software audacity. *please use some filter if you use this sound. . .