1.0مؤسسة الفلك الخيريةhttps://alfolk.net/en/rich600338<blockquote class="wp-embedded-content" data-secret="fp5pxXpA0I"><a href="https://alfolk.net/en/hearing-impairment/">Hearing impairment</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://alfolk.net/en/hearing-impairment/embed/#?secret=fp5pxXpA0I" width="600" height="338" title="“Hearing impairment” — مؤسسة الفلك الخيرية" data-secret="fp5pxXpA0I" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /*! This file is auto-generated */ !function(c,d){"use strict";var e=!1,o=!1;if(d.querySelector)if(c.addEventListener)e=!0;if(c.wp=c.wp||{},c.wp.receiveEmbedMessage);else if(c.wp.receiveEmbedMessage=function(e){var t=e.data;if(!t);else if(!(t.secret||t.message||t.value));else if(/[^a-zA-Z0-9]/.test(t.secret));else{for(var r,s,a,i=d.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),n=d.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),o=new RegExp("^https?:$","i"),l=0;l<n.length;l++)n[l].style.display="none";for(l=0;l<i.length;l++)if(r=i[l],e.source!==r.contentWindow);else{if(r.removeAttribute("style"),"height"===t.message){if(1e3<(s=parseInt(t.value,10)))s=1e3;else if(~~s<200)s=200;r.height=s}if("link"===t.message)if(s=d.createElement("a"),a=d.createElement("a"),s.href=r.getAttribute("src"),a.href=t.value,!o.test(a.protocol));else if(a.host===s.host)if(d.activeElement===r)c.top.location.href=t.value}}},e)c.addEventListener("message",c.wp.receiveEmbedMessage,!1),d.addEventListener("DOMContentLoaded",t,!1),c.addEventListener("load",t,!1);function t(){if(o);else{o=!0;for(var e,t,r,s=-1!==navigator.appVersion.indexOf("MSIE 10"),a=!!navigator.userAgent.match(/Trident.*rv:11\./),i=d.querySelectorAll("iframe.wp-embedded-content"),n=0;n<i.length;n++){if(!(r=(t=i[n]).getAttribute("data-secret")))r=Math.random().toString(36).substr(2,10),t.src+="#?secret="+r,t.setAttribute("data-secret",r);if(s||a)(e=t.cloneNode(!0)).removeAttribute("security"),t.parentNode.replaceChild(e,t);t.contentWindow.postMessage({message:"ready",secret:r},"*")}}}}(window,document); </script> https://alfolk.net/wp-content/uploads/2021/06/WhatsApp-Image-2021-06-21-at-1.37.18-PM.jpeg10001000Sensory impairments (B- Hearing impairment) The audible sound is a signal that contains a tone or several tones produced by a certain organ of an organism aiming at communicating with another organism (of the same kind or of another kind) and by which it expresses what it wants to say or do. The sensation caused by these frequencies is called hearing. Physically, sound is a frequency resulting from the vibration of a body and it travels only through a physical medium (solid – liquid – gas) and does not spread in a vacuum. Sound waves: waves of which frequency is between 20 Hz i.e. (20 vibrations per second), and 20 thousand Hz, and only this range of sound waves can be heard by humans (Hz is the unit of frequency measurement and is equal to one vibration per second). Ultrasound: Ultrasound waves with a frequency of more than 20,000 Hz that cannot be detected by the human ear. Infrasound: waves with a frequency of less than 20 Hz that are not detected by the human ear. Hearing Impairment It is a hearing deficiency to the extent that prevents the auditory system from performing its function. This type of disabilities leads to social isolation and limits the affected persons from using their abilities. The environment often plays a key role in the occurrence of such disability. It is an impairment that prevents the individual from hearing spoken speech with or without hearing aids, and it includes 2 categories: (the deaf) and (the hard of hearing). A deaf person is: -An individual who is unable to respond in a way that indicates an understanding of audible speech. -An individual who suffers from a defect in the auditory system that prevents him from acquiring language by normal methods, due to the loss of the ability to hear before learning to speak or as soon as they learn to speak as a result of a malfunction. There are those who define the deaf as a child who has lost his hearing ability in the first three years of his life, which leads to his […]