Flute acoustics: measurement, modelling and design - School of ...

APPENDIX B. PROGRAM LISTINGS 311
/*
Woodwind.h
By Paul Dickens, 2005
Listing B.30: Woodwind.h
A woodwind instrument.
*/
#ifndef WOODWIND_H_PROTECTOR
#define WOODWIND_H_PROTECTOR
#include "Vector.h"
#include "Map.h"
#include "Complex.h"
#include "TransferMatrix.h"
/* Maximum length of bore elements */
#define WW_MAX_LENGTH 5.0e-3
/* Temperature, humidity and CO2 */
#define WW_T_0 30.3
#define WW_T_AMB 21.0
#define WW_T_GRAD -7.7 // degrees C per metre
#define WW_HUMID 1
#define WW_X_CO2 0.025
/* Embouchure entry radius */
#define WW_EMB_RADIUS 3.9e-3;
/* Empirical corrections */
#define CORR_OPEN_FINGER_HOLE_LENGTH -0.15
#define CORR_OPEN_KEYED_HOLE_LENGTH 0.1
#define CORR_CLOSED_FINGER_HOLE_LENGTH -0.76
#define CORR_CLOSED_KEYED_HOLE_LENGTH -0.05
/* BoreSegment: */
typedef struct boresegment_str {
double radius1;
double radius2;
double length;
double c;
double rho;
} *BoreSegment;
/* Key: */
typedef struct key_str {
double radius;
double holeRadius;
double height;
double thickness;
double wallThickness;
double chimneyHeight;
} *Key;