{"id":6873,"date":"2016-08-19T10:37:42","date_gmt":"2016-08-19T15:37:42","guid":{"rendered":"https:\/\/www.servimatango.com\/blog\/?p=6873"},"modified":"2019-06-11T07:33:37","modified_gmt":"2019-06-11T12:33:37","slug":"canceladores-de-eco-en-llamadas","status":"publish","type":"post","link":"https:\/\/servervoip.com\/blog\/canceladores-de-eco-en-llamadas\/","title":{"rendered":"Canceladores de eco en llamadas"},"content":{"rendered":"<p><strong>C\u00f3mo funciona un Canceladorde eco?  <\/strong><\/p>\n<p>Es muy importante saber c\u00f3mo funcionan los cancelad ores de eco para entender  c\u00f3mo sacarles el m\u00e1ximo provecho y qui\u00e9n sabe, para tener las bases para dise\u00f1ar  el nuestro propio o modificar alguno existente.  Un cancelador de eco parte de un principio l\u00f3gico muy sencillo. Si se refleja una  parte de la se\u00f1al de ida en la de regreso, entonces  para eliminar el eco deber\u00eda  bastar conrestar la se\u00f1al de ida (en cierta proporci\u00f3n) a la se\u00f1al de regreso.  <\/p>\n<p>Debido a que el eco es una se\u00f1al reflejada que se encuentra atenuada, la clave est\u00e1  en estimar adecuadamente dicha atenuaci\u00f3n. Por ejemplo, supongamos que la  se\u00f1al de eco es un 20% de la se\u00f1al original. Entonces si podemos predecir que  debemos restar a la se\u00f1al de regreso un 20% de la se\u00f1al de ida, habremos  eliminado el eco completamente.  Esta \u201cpredicci\u00f3n\u201d del factor de atenuaci\u00f3n es una p arte clave de todo algoritmo de  cancelaci\u00f3n de eco y recibe el nombre de algoritmo  adaptativo o filtro adaptativo  (adaptivefilter) ya que debe adaptar el valor constantemente para obtener los  mejores resultados.  <\/p>\n<p>En la siguiente figura supondremos que la atenuaci\u00f3n de la se\u00f1al reflejada est\u00e1  denotada por la letra \u03b1.. La se\u00f1al recibida es Rx,  la se\u00f1al transmitida es Tx y la  se\u00f1al transmitida con el componente de eco es Txe.   <\/p>\n<div id=\"attachment_6876\" style=\"width: 835px\" class=\"wp-caption aligncenter\"><img aria-describedby=\"caption-attachment-6876\" loading=\"lazy\" src=\"https:\/\/www.servimatango.com\/blog\/wp-content\/uploads\/Diagrama-basico-del-funcionamiento-de-un-cancelador.png\" alt=\"Diagrama b\u00e1sico del funcionamiento de un cancelador\" width=\"825\" height=\"384\" class=\"size-full wp-image-6876\" srcset=\"https:\/\/servervoip.com\/blog\/wp-content\/uploads\/Diagrama-basico-del-funcionamiento-de-un-cancelador.png 825w, https:\/\/servervoip.com\/blog\/wp-content\/uploads\/Diagrama-basico-del-funcionamiento-de-un-cancelador-150x70.png 150w, https:\/\/servervoip.com\/blog\/wp-content\/uploads\/Diagrama-basico-del-funcionamiento-de-un-cancelador-300x140.png 300w\" sizes=\"(max-width: 825px) 100vw, 825px\" \/><p id=\"caption-attachment-6876\" class=\"wp-caption-text\">Diagrama b\u00e1sico del funcionamiento de un cancelador<\/p><\/div>\n<p>Sin embargo, no todo es tan sencillo como se explica aqu\u00ed. El eco no es solo una  se\u00f1al reflejada atenuada sino que tambi\u00e9n puede esta r desplazada en el tiempo con  cierto retardo. Ese retardo tambi\u00e9n hay que predecir lo para poder restar la  indeseable se\u00f1al de eco. <\/p>\n<p>Predecir el retardo no es una tarea sencilla y por lo general  los canceladores de eco tienen limitantes. Si el retardo es muy grande dejan de  funcionar ya que es mucho trabajo revisar la se\u00f1al  en busca de retardo por grandes  lapsos de tiempo.  <\/p>\n<p>Tomado de:<br \/>\nArroba, M, &#038; Salazar, M. (2011). Propuesta de soluci\u00f3nes a las vulnerabilidades del protocolo de se\u00f1alizaci\u00f3n SIP en voz sobre IP: Red IP-PBX (tesis de pregrado). Escuela Superior Polit\u00e9cnica de Chimborazo, Riobamba, Ecuador.<\/p>\n<p>Fuente:<br \/>\nhttp:\/\/dspace.espoch.edu.ec\/bitstream\/123456789\/872\/1\/38T00263.pdf<\/p>\n<p>\n<div id=\"rev_slider_3_1_wrapper\" class=\"rev_slider_wrapper fullwidthbanner-container\" style=\"float:left;background-color:#E9E9E9;padding:0px;margin-left:0px;margin-right:0px;margin-top:0px;margin-bottom:0px;\">\n<!-- START REVOLUTION SLIDER 5.0.9 auto mode -->\n\t<div id=\"rev_slider_3_1\" class=\"rev_slider fullwidthabanner\" style=\"display:none;\" data-version=\"5.0.9\">\n<ul>\t<!-- SLIDE  -->\n\t<li data-index=\"rs-28\" data-transition=\"random\" data-slotamount=\"7\"  data-easein=\"default\" data-easeout=\"default\" data-masterspeed=\"300\"  data-thumb=\"\"  data-rotate=\"0\"  data-saveperformance=\"off\"  class=\"voipswitch videos subtitulos\" id=\"voipswitch videos subtitulos\" voipswitch videos subtitulos data-title=\"SubtitulosTexto\" data-description=\"\">\n\t\t<!-- MAIN IMAGE -->\n\t\t<img src=\"https:\/\/servervoip.com\/blog\/wp-content\/plugins\/revslider\/admin\/assets\/images\/dummy.png\"  alt=\"\"  width=\"879\" height=\"51\" data-lazyload=\"https:\/\/servervoip.com\/blog\/wp-content\/plugins\/revslider\/admin\/assets\/images\/transparent.png\" data-bgposition=\"center top\" data-bgfit=\"cover\" data-bgrepeat=\"no-repeat\" class=\"rev-slidebg\" data-no-retina>\n\t\t<!-- LAYERS -->\n\n\t\t<!-- LAYER NR. 1 -->\n\t\t<div class=\"tp-caption   tp-resizeme\" \n\t\t\t id=\"slide-28-layer-2\" \n\t\t\t data-x=\"\" \n\t\t\t data-y=\"1\" \n\t\t\t\t\t\tdata-width=\"['none','none','none','none']\"\n\t\t\tdata-height=\"['none','none','none','none']\"\n\t\t\tdata-transform_idle=\"o:1;\"\n \n\t\t\t data-transform_in=\"opacity:0;s:300;e:Power2.easeInOut;\" \n\t\t\t data-transform_out=\"opacity:0;s:300;s:300;\" \n\t\t\tdata-start=\"500\" \n\t\t\tdata-responsive_offset=\"on\" \n\n\t\t\t\n\t\t\tstyle=\"z-index: 5;\">\n\t\t\t\t<div class=\"rs-looped disabled\" ><img src=\"https:\/\/servervoip.com\/blog\/wp-content\/plugins\/revslider\/admin\/assets\/images\/dummy.png\" alt=\"\" data-ww=\"879\" data-hh=\"51\" data-lazyload=\"https:\/\/www.servervoip.com\/blog\/wp-content\/uploads\/2015\/10\/fondo-en-degradado-con-signod-copia.jpg\" data-no-retina> \n\t\t\t\t<\/div>\n\t\t<\/div>\n\n\t\t<!-- LAYER NR. 2 -->\n\t\t<div class=\"tp-caption mediumbgorange   tp-resizeme\" \n\t\t\t id=\"slide-28-layer-1\" \n\t\t\t data-x=\"6\" \n\t\t\t data-y=\"5\" \n\t\t\t\t\t\tdata-width=\"['653']\"\n\t\t\tdata-height=\"['41']\"\n\t\t\tdata-transform_idle=\"o:1;\"\n \n\t\t\t data-transform_in=\"opacity:0;s:300;e:Power3.easeInOut;\" \n\t\t\t data-transform_out=\"auto:auto;s:300;\" \n\t\t\tdata-start=\"500\" \n\t\t\tdata-splitin=\"none\" \n\t\t\tdata-splitout=\"none\" \n\t\t\tdata-responsive_offset=\"on\" \n\n\t\t\t\n\t\t\tstyle=\"z-index: 6; 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style=\"display:none;\" data-version=\"5.0.9\">\n<ul>\t<!-- SLIDE  -->\n\t<li data-index=\"rs-15\" data-transition=\"random\" data-slotamount=\"7\"  data-easein=\"default\" data-easeout=\"default\" data-masterspeed=\"300\"  data-link=\"http:\/\/www.servervoip.com\/voipswitch-comprar.php?server=50_promo\"  data-target=\"_blank\"  data-slideindex=\"back\" data-thumb=\"https:\/\/servervoip.com\/blog\/wp-content\/uploads\/2015\/10\/fondo-slider-con-letras31-100x50.jpg\"  data-rotate=\"0\"  data-saveperformance=\"off\"  data-title=\"Slide\" data-description=\"\">\n\t\t<!-- MAIN IMAGE -->\n\t\t<img src=\"https:\/\/servervoip.com\/blog\/wp-content\/plugins\/revslider\/admin\/assets\/images\/dummy.png\"  alt=\"\"  width=\"879\" height=\"262\" data-lazyload=\"https:\/\/servervoip.com\/blog\/wp-content\/uploads\/2015\/10\/fondo-slider-con-letras31.jpg\" data-bgposition=\"center top\" data-bgfit=\"cover\" data-bgrepeat=\"no-repeat\" class=\"rev-slidebg\" data-no-retina>\n\t\t<!-- LAYERS 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htmlDiv = document.getElementById('rs-plugin-settings-inline-css');\r\n\t\t\t\t\tif(htmlDiv) {\r\n\t\t\t\t\t\thtmlDiv.innerHTML = htmlDiv.innerHTML + htmlDivCss;\r\n\t\t\t\t\t}\r\n\t\t\t\t\telse{\r\n\t\t\t\t\t\tvar htmlDiv = document.createElement('div');\r\n\t\t\t\t\t\thtmlDiv.innerHTML = '<style>' + htmlDivCss + '<\/style>';\r\n\t\t\t\t\t\tdocument.getElementsByTagName('head')[0].appendChild(htmlDiv.childNodes[0]);\r\n\t\t\t\t\t}\r\n\t\t\t\t  <\/script>\r\n\t\t\t\t<\/div><!-- END REVOLUTION SLIDER --><br \/>\n&nbsp;<\/p>\n<hr \/>\n<h2>Contactos<\/h2>\n<p>Obt\u00e9n respuestas sobre tu Empresa Voip. Habla con un asesor especializado para despejar tus inquietudes.<\/p>\n<p><a href=\"http:\/\/www.servervoip.com\/voipswitch\/contacto-server-voip-switch\/\"><img loading=\"lazy\" src=\"https:\/\/www.servimatango.com\/blog\/wp-content\/uploads\/2015\/09\/contacto-servervoip.jpg\" alt=\"contacto servervoip\" width=\"690\" height=\"207\" class=\"aligncenter size-full wp-image-4446\" srcset=\"https:\/\/servervoip.com\/blog\/wp-content\/uploads\/2015\/09\/contacto-servervoip.jpg 690w, https:\/\/servervoip.com\/blog\/wp-content\/uploads\/2015\/09\/contacto-servervoip-300x90.jpg 300w\" sizes=\"(max-width: 690px) 100vw, 690px\" \/><\/a><br \/>\n[st_button button_text=\u00bb SOLICITA TU SERVER AHORA \u25ba\u00bb button_type_url=\u00bbhttp:\/\/www.servervoip.com\/voipswitch-comprar.php?server=50_promo\u00bb open_in=\u00bbnew_window\u00bb icon=\u00bbfa fa-shopping-cart\u00bb button_alignment=\u00bbcenter\u00bb button_margin_top=\u00bb-50&#8243; button_margin_bottom=\u00bb-20&#8243; button_size=\u00bbbtn-lg\u00bb button_color=\u00bbbtn-blue\u00bb appearing_animation=\u00bbfade_in\u00bb wrapper_padding_top=\u00bb0&#8243; wrapper_padding_left=\u00bb0&#8243; wrapper_padding_bottom=\u00bb0&#8243; wrapper_padding_right=\u00bb0&#8243; wrapper_bg_opacity_slider=\u00bb\u00bb id_wrapper=\u00bbelm_5c828b44dca3d\u00bb ][\/st_button]<br \/>\n&nbsp;<br \/>\n<strong>ServerVoIP<\/strong> te proporciona todas las herramientas necesarias para que crees y desarrolles <strong>tu negocio de comunicaci\u00f3n por internet.<\/strong><\/p>\n<p>Pertenece al Selecto Grupo de Emprendedores que decidieron cambiar su vida invirtiendo en un <strong>Server con ServerVoIP.<\/strong><\/p>\n<p><strong>ServerVoip <\/strong>presenta el mejor server fisico dedicado para telefonia voip que incluye el software de telefon\u00eda ip \u00abVoipSwitch\u00bb especial para voz sobre ip.<\/p>\n<p><strong>VoipSwitch <\/strong>es la plataforma ideal para que sin necesidad de conocimientos t\u00e9cnicos crees tu propia empresa de Telefon\u00eda IP VoIP y encuentres una forma de ganar DINERO en la red siendo carrier de telefon\u00eda sobre Ip (Voip). <\/p>\n<p>Te brindamos todas las herramientas para que est\u00e9s al nivel de las grandes empresas y negocios; puedas obsequiar llamadas gratis como estrategia de marketing en fidelizaci\u00f3n a tus clientes \/ free entre tus clientes; el servidor VoIP te permite utilizar m\u00faltiples proveedores como nosotros tenemos <a href=\"http:\/\/www.alosip.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">www.alosip.com.<\/a> (carrier \/ routes) para un mismo destino, vender terminaci\u00f3n (wholesale), clientes finales (retail), etc.<\/p>\n<p>El software te proporciona todo lo que necesitas; sistema llave en mano: para crear tu empresa de telefon\u00eda IP (VoIP) bajo tu propio nombre o marca. M\u00e1s informaci\u00f3n en <a href=\"http:\/\/marcaBlanca.servervoip.com\" target=\"_blank\" rel=\"noopener noreferrer\">marcaBlanca.servervoip.com<\/a><\/p>\n<p>Para que CREES y DESARROLLES tu propia empresa de telefonia por internet, revisa m\u00e1s detalles en <a href=\"http:\/\/www.servervoip.com\/voipswitch\/\">VoIPSwitch<\/a><\/p>\n<hr \/>\n<h1 style=\"text-align: center;\">\u00bfQuieres Emprender por Internet?<\/h1>\n<h3 style=\"text-align: center;\">\u00abAhora Trabajar desde la Comodidad de tu Casa y Ganar Dinero por Internet&#8230; Nunca Hab\u00eda Sido tan F\u00e1cil, R\u00e1pido y con RESULTADOS Impresionantes\u00bb<\/h3>\n<p style=\"text-align: center;\">Descubre el NEGOCIO Perfecto y convi\u00e9rtete en un EMPRESARIO de \u00c9xito creando y desarrollando tu Propia Empresa de Telefon\u00eda por Internet. <strong>Suscr\u00edbete y RECIBE FREE<\/strong>:<\/p>\n<h2 style=\"text-align: center;\">\u00a1Sie7e Poderosas Razones Que Tiene el EMPRENDEDOR Exitoso para Crear su Propia Empresa de Telefon\u00eda por Internet VoIP!&#8230;<\/h2>\n<p><img loading=\"lazy\" class=\"aligncenter wp-image-1229 size-medium\" src=\"http:\/\/servimatango.com\/negocios-rentables\/wp-content\/uploads\/2015\/07\/libro-server-voip-241x300.png\" alt=\"libro server voip\" width=\"241\" height=\"300\" \/><br \/>\n[st_accordion div_margin_bottom=\u00bb15&#8243; initial_open=\u00bb0&#8243; multi_open=\u00bbyes\u00bb wrapper_padding_top=\u00bb0&#8243; wrapper_padding_left=\u00bb0&#8243; wrapper_padding_bottom=\u00bb0&#8243; wrapper_padding_right=\u00bb0&#8243; wrapper_bg_opacity_slider=\u00bb\u00bb wrapper_bg_opacity=\u00bb50&#8243; wrapper_border_style=\u00bboutset\u00bb wrapper_rounded_topleft=\u00bb3&#8243; id_wrapper=\u00bbelm_5c828b0bd3fa6&#8243; ][st_item_accordion heading=\u00bb<img class=aligncenter src=http:\/\/servimatango.com\/negocios-rentables\/wp-content\/uploads\/2015\/07\/Boton-descarga-reporte.gif alt=Reporte width=500 height=145 \/>\u00bb id_wrapper=\u00bbelm_5c828b0bd3f58&#8243; ]<center><script type=\"text\/javascript\" src=\"http:\/\/app.getresponse.com\/view_webform.js?wid=10619501&#038;u=kSvx\"><\/script><\/center>[\/st_item_accordion][\/st_accordion]<\/p>\n<p><a href=\"https:\/\/www.servimatango.com\/blog\/sip-telefonia\/\">SIP Telefon\u00eda e IVR (Respuesta Autom\u00e1tica)<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00f3mo funciona un Canceladorde eco? Es muy importante saber c\u00f3mo funcionan los cancelad ores de eco para entender c\u00f3mo sacarles el m\u00e1ximo provecho y qui\u00e9n sabe, para tener las bases para dise\u00f1ar el nuestro propio o modificar alguno existente. Un cancelador de eco parte de un principio l\u00f3gico muy sencillo. Si se refleja una parte&#8230;<\/p>\n<p><a class=\"excerpt-read-more btn btn-primary\" href=\"https:\/\/servervoip.com\/blog\/canceladores-de-eco-en-llamadas\/\" title=\"ReadCanceladores de eco en llamadas\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":6875,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"image","meta":[],"categories":[13],"tags":[1868,1566,1867],"_links":{"self":[{"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/posts\/6873"}],"collection":[{"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/comments?post=6873"}],"version-history":[{"count":0,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/posts\/6873\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/media\/6875"}],"wp:attachment":[{"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/media?parent=6873"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/categories?post=6873"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/tags?post=6873"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}