ToneTester is a Macintosh application that tests hearing. Specifically, it looks for offsets in how each of a person\'s ears hears pitch (the formal term for this is \"binaural diplacusis\" or \"interaural pitch difference\"). To use it, you adjust a slider until your ears hear the same pitch, and then ToneTester tells you the actual pitch difference.

ToneTester Ear Testing Application Copyright (C) 2005 Daniel Griscom, Suitable Systems

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

For more information about ToneTester, see

http://www.suitable.com/tools/tonetester.html

or contact

Daniel Griscom
Suitable Systems
1 Centre Street, Suite 204
Wakefield, MA 01880
(781) 665-0053