1.0mp4gain.comhttps://mp4gain.com/mp4gainR. Ariashttps://mp4gain.com/mp4gain/author/mp4gain/rich600338<blockquote class="wp-embedded-content" data-secret="GAr0wLXikY"><a href="https://mp4gain.com/mp4gain/what-is-sound/">What is sound?</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://mp4gain.com/mp4gain/what-is-sound/embed/#?secret=GAr0wLXikY" width="600" height="338" title="“What is sound?” — mp4gain.com" data-secret="GAr0wLXikY" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://mp4gain.com/mp4gain/wp-includes/js/wp-embed.min.js </script> What is sound? From a physical point of view, sound, in the broadest sense of the word, is vibrations of particles from the environment (air), transmitted from one point to another. The sound propagation process (in a somewhat simplified way) is as follows. Some source (for example, a string of a musical instrument, the membrane … Continue reading ""https://www.aplustopper.com/wp-content/uploads/2016/11/sound-1.jpg