amp=100
Low cuica (open cuica).  From sound sample by Anonymous, Cuica01.ogg or
Cuica02ogg, Wikimedia commons, May 9, 2005, released under the following
license: Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation License, Version 1.2
or any later version published by the Free Software Foundation; with no
Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. See
2006b18-Copr-Gnu-FDL.txt.  Shortened, pitch raised, and envelope modified
and converted to patch format for Freepats by walt@w-gregg.juneau.ak.us,
Feb. 2006.