Mercurial > hg > aim92
diff wdf/ear.h @ 0:5242703e91d3 tip
Initial checkin for AIM92 aimR8.2 (last updated May 1997).
author | tomwalters |
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date | Fri, 20 May 2011 15:19:45 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/wdf/ear.h Fri May 20 15:19:45 2011 +0100 @@ -0,0 +1,81 @@ +/* + Copyright (c) Applied Psychology Unit, Medical Research Council. 1988, 1989 + =========================================================================== + + Permission to use, copy, modify, and distribute this software without fee + is hereby granted for research purposes, provided that this copyright + notice appears in all copies and in all supporting documentation, and that + the software is not redistributed for any fee (except for a nominal shipping + charge). Anyone wanting to incorporate all or part of this software in a + commercial product must obtain a license from the Medical Research Council. + + The MRC makes no representations about the suitability of this + software for any purpose. It is provided "as is" without express or implied + warranty. + + THE MRC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING + ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL THE + A.P.U. BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY + DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN + AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. +*/ + +/* + Acknowledgment: + ============== + + The source code provided in this file was originally developed by + Christian Giguere as part of a Ph.D degree at the Department of + Engineering of the University of Cambridge from April 1990 to + November 1993. The code was subsequently adapted under a grant + from the Hearing Research Trust for full compatibility with + AIM Release 6.15. + + Christian Giguere 25/03/94 + +*/ + +/* + =========================================================== + ear.h + =========================================================== + + Design of outer and middle ear (EAR) filter. + (uncoupled version) + + Author : Christian Giguere + First written : 01st June, 1991 + Last edited : 07th March, 1994 + =========================================================== +*/ + +#ifndef _EAR_H_ + + +/***** defines *****/ + +#define _EAR_H_ + +#define RHO_air ( 1.14e-03 ) /* air density (g/cm3) */ +#define C ( 3.5e04 ) /* sound velocity in air (cm/s) */ +#define As ( 25.0 ) /* effective diffraction radius of head-torso (cm) */ + + +/***** data structure *****/ + +typedef struct _tube_info TubeInfo ; + +struct _tube_info { + int Nsegments ; /* number of tube segments */ + double length ; /* total length of tube (cm) */ + double diameter ; /* diameter of tube (cm2) */ + double att_factor ; /* attn. constant for backward/forward waves (1/cm) */ + } ; + +/***** externals *****/ + +extern Source Ear() ; + +#endif +