arsinclair

The theme of my research is NIHL - Noise Induced Hearing Loss, which refers to the field of auditory organ's problems.
Noise induced hearing loss is defined as permanent hearing impairment arising from prolonged exposure to excessive levels of noise. 

One in 10 Americans has a hearing loss that affects his or her ability to understand normal speech. People working before the mid1960s may have been exposed to higher levels of noise where there were no laws governing hearing problems. Recent studies show an alarming increase in hearing loss in youngsters.

There are two different kinds of hearing loss:
1. Irreversible hearing loss
2. Noise can also cause a reversible hearing loss, called a temporary threshold shift. This typically occurs in individuals who are exposed to gunfire or firecrackers, and hear ringing in their ears after the event.

First, we have to define noise. Sound can be measured scientifically in two ways — intensity and pitch. Both of these affect the degree to which sound damages hearing.

arsinclair

#include <windows.h>		
#include <stdio.h>			
#include <math.h>			
#include <gl\gl.h>			
#include <gl\glu.h>			
#include <gl\glaux.h>		

HDC			hDC=NULL;		// дескриптор контекста устройства
HGLRC		hRC=NULL;		// дескриптор контекста рендеринга
HWND		hWnd=NULL;		// дескриптор окна