{"version":"1.0","provider_name":"Imperalum","provider_url":"https:\/\/www.imperalum.com\/en\/","author_name":"Nuno Pedro","author_url":"https:\/\/www.imperalum.com\/en\/author\/gigaprimeadmin\/","title":"Pressure and Sound Power Level - Imperalum","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"Ku63MKle9I\"><a href=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/nivel-de-pressao-e-de-potencia-sonora\/\">Pressure and Sound Power Level<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.imperalum.com\/en\/solutions\/acoustic-insulation\/nivel-de-pressao-e-de-potencia-sonora\/embed\/#?secret=Ku63MKle9I\" width=\"600\" height=\"338\" title=\"&#8220;Pressure and Sound Power Level&#8221; &#8212; Imperalum\" data-secret=\"Ku63MKle9I\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!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);\n\/\/# sourceURL=https:\/\/www.imperalum.com\/cms\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","description":"General Acoustics Concepts The values of quantities in the acoustical domain, namely sound pressure and power, are expressed in terms of their levels, considered in relation to reference values. The sound pressure level, expressed in decibels, is given by the following expression: In this equation, the square of the effective value of the sound pressure, [&hellip;]","thumbnail_url":"https:\/\/imperalum.com\/cms\/wp-content\/uploads\/2014\/08\/niveis-pressao_1.gif"}