Help Library: Help Library: [LG TV Sync] Sound reverberates when it is put through the internal and the external speakers simultaneously

<div oncontextmenu="return false" onselectstart="return false" ondragstart="return false" >
	<html lang="en">
<head>
<meta>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width">
<style type="text/css">
@import url(https://fonts.googleapis.com/earlyaccess/notosanskr.css);
.tal {text-align:left !important;}
.ml-1 {margin-left:20px !important;}
.mt-1 {margin-top:20px !important;}
caption {overflow:hidden;width:1px;height:1px;margin:0;padding:0;font-size:1px;text-indent:-9999px;}
.content-service-view {font-family:'Noto Sans','Noto Sans KR',sans-serif;font-size:14px;line-height:1.6;}
.content-service-view .lg-red {color:#ec455a;}
.content-service-view strong {font-weight:600;}
.content-service-view p {margin:0 0 10px 0;padding:0;color:#333;}
.content-service-view .txt-idt {margin-left:1.14em !important;text-indent:-1.14em;}
.content-service-view .txt-idt * {text-indent:0;}
.content-service-view .iframe-wrap {margin-top:15px;}
.content-service-view .iframe-wrap iframe {width:640px;}
#contentsViewer .content-service-view .iframe-wrap iframe {height:360px !important;}
.content-service-view .info-subject {margin:0 0 15px;padding:0;font-size:20px;color:#444;line-height:1.5;}
#contentsViewer .content-service-view .info-subject {margin:0;padding:0 0 15px;}
.content-service-view .tit {position:relative;margin:60px 0 15px 0;padding:0;font-weight:600;font-size:22px;color:#444;line-height:1.5;}
.content-service-view .tit:before {content:"";overflow:hidden;position:absolute;left:0;top:-8px;width:25px;height:3px;background:#ec455a;}
.content-service-view .tit:first-child {margin-top:0;}
.content-service-view .info-subject+.tit {margin-top:40px;}
.content-service-view .sub-tit {position:relative;margin:60px 0 10px;padding:0 0 0 22px;font-size:17px;font-weight:500;line-height:1.5;}
.content-service-view .sub-tit:before {content:"";overflow:hidden;position:absolute;left:0;top:5px;width:18px;height:18px;border-radius:50%;background:#999 url(https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=CYfUaCPKDZkbFewB3OjoAA&amp;portalId=P1) no-repeat 4px 50%;background-size:10px;}
.content-service-view .sub-tit:first-child,
.content-service-view .tit+.sub-tit {margin-top:20px;}
.content-service-view .sub-tit .num {display:block;position:absolute;left:0;top:5px;width:17px;height:17px;text-align:center;border-radius:50%;font-size:11px;color:#fff;background:#999;}
.content-service-view .info-tit {margin:20px 0 0;padding-left:20px;font-size:15px;font-weight:500;background:url(https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=81CJtgOoS8EBzjcpk4oCvA&amp;portalId=P1) no-repeat 0 5px;background-size:15px;}
.content-service-view .info-desc {margin:0.3em 0 0.5em;font-weight:500;color:#000;}
.content-service-view .info-desc.idt {margin-left:18px;text-indent:-18px;}
.content-service-view .img-only {margin:0 0 20px;}
.content-service-view .img-only img {max-width:100%;margin-bottom:15px;}
.content-service-view .img-only img:last-child {margin-bottom:0;}
.content-service-view .img-box {margin:15px 0;font-size:0;line-height:0;}
.content-service-view .img-box a {font-size:0;line-height:0;}
.content-service-view ol,
.content-service-view ul {margin:0 0 20px;padding:0;list-style:none;}
.content-service-view .cause-list {margin-top:0;}
.content-service-view .cause-list li {position:relative;margin-top:5px;padding-left:10px;line-height:1.5;}
.content-service-view .cause-list li:before {content:"";position:absolute;left:0;top:9px;overflow:hidden;width:3px;height:3px;border-radius:50%;background:#000;}
.content-service-view .bul-list {margin-top:15px;}
.content-service-view .bul-list li {position:relative;margin-top:7px;padding-left:10px;line-height:1.5;}
.content-service-view .bul-list li:before {content:"";position:absolute;left:0;top:9px;overflow:hidden;width:4px;height:4px;border-radius:50%;background:#ec455a;}
.content-service-view .link-list {margin-top:10px;}
.content-service-view .link-list li {display:table;box-sizing:border-box;width:100%;margin-top:10px;padding:8px 15px;border-radius:8px;box-shadow:2px 4px 16px 1px rgba(0,0,0,0.14);}
.content-service-view .link-list li .link-tit {display:table-cell;padding-right:5px;font-weight:600;vertical-align:middle;}
.content-service-view .link-list li .right {display:table-cell;text-align:right;}
.content-service-view .link-list li .ver {display:inline-block;margin-top:5px;color:#999;}
.content-service-view .link-list li .right a {margin-left:10px;}
.content-service-view .tbl-scroll {position:relative;overflow-x:auto;margin:0 0 15px;}
.content-service-view .tbl-scroll table {border-collapse:collapse;}
.content-service-view .tbl-scroll th,
.content-service-view .tbl-scroll td {padding:7px;border:1px solid #ccc;text-align:center;white-space:nowrap;vertical-align:middle;font-size:14px;line-height:1.6;}
.content-service-view .tbl-scroll th {font-size:15px;font-weight:600;background:#ddd;}
.content-service-view .tbl-scroll td p {margin-bottom:0;}
.content-service-view [class^="icon-"] {display:inline-block;overflow:hidden;width:14px;height:14px;text-indent:-5000px;margin-right:2px;vertical-align:-2px;background-image:url(https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=e6Br68S0ipa4zVZ3ZhqQ&amp;portalId=P1);background-size:100%;}
.content-service-view .icon-down {background-image:url(https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=cSrRVKKz6eHJNHzIRgzWA&amp;portalId=P1);}
.content-service-view [class^="btn0"] {display:inline-block;height:32px;padding:0 15px;border:1px solid #ec455a;border-radius:18px;text-decoration:none;font-size:14px;color:#ec455a;line-height:2;background:#fff;}
.content-service-view .btn01:hover {color:#fff;background:#ec455a;}
.content-service-view .link-btn {display:inline-block;height:32px;margin-top:5px;padding:0 15px;border:1px solid #d2d2d7;border-radius:18px;text-decoration:none;font-size:14px;color:#ec455a;line-height:2;background:#fff;}
.content-service-view .link-btn:hover {border-color:#ec455a;}
.content-service-view .link-txt {display:inline-block;text-decoration:underline;vertical-align:top;color:#ec455a;}
.content-service-view .tip-box {margin:15px 0 25px;padding:20px 22px 10px;border:2px solid #ddd;border-radius:8px;}
.content-service-view .tip-box .tip-tit {display:block;position:relative;padding-left:22px;font-size:15px !important;color:#222;}
.content-service-view .tip-box .tip-tit:before {content:"!";position:absolute;left:0;top:5px;width:16px;height:16px;border-radius:50%;text-align:center;font-size:11px;color:#fff;background:rgb(192, 192, 192);}
.content-service-view .tip-box p {margin-top:1em;color:#ec455a !important;}
.content-service-view .tip-box strong {font-size:14px;}
.content-service-view .tip-box&gt;p&gt;strong {color:#ec455a !important;}
.content-service-view .tip-box .con-view {margin:1em 0 15px;color:#333;}
.content-service-view .tip-box .bul-list {margin-bottom:15px;}
.content-service-view .txt-box {max-width:600px;}
.content-service-view .txt-box+.txt-box {margin-top:25px;}
.content-service-view .txt-box h4 {margin:0;padding:6px;text-align:center;font-size:18px;font-weight:600;background:#ddd;}
.content-service-view .txt-box ul {margin:0 7px;}
.content-service-view .txt-box li {display:flex;flex-wrap:wrap;padding:5px;border-bottom:1px solid #ddd;}
.content-service-view .txt-box li div {flex:1 1 50%;}
.content-service-view .txt-box li span {display:block;position:relative;padding-left:10px;font-size:16px;font-weight:600;}
.content-service-view .txt-box li span:before {content:"";position:absolute;left:0;top:10px;overflow:hidden;width:4px;height:4px;border-radius:50%;background:#000;}
.content-service-view .txt-box li p {margin:0;padding:0 0 0 10px;font-size:15px;}
.content-service-view .img-banner {margin-top:2em;}
.content-service-view .img-banner .mo {display:none;}
.content-service-view .img-banner .pc {display:block;position:relative;height:168px;margin-right:175px;background:#e9ecf1 url(https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=EYElckJimMpH2v7UAxQSvw&portalId=P1) no-repeat 0 50%;background-size:contain;}
.content-service-view .img-banner .pc a {position:absolute;top:0;right:-175px;}
.content-service-view .img-banner .pc a img {-webkit-box-shadow: 2px 2px 5px 0px rgba(118,118,118,1);-moz-box-shadow: 2px 2px 5px 0px rgba(118,118,118,1);box-shadow: 2px 2px 5px 0px rgba(118,118,118,1);}
.content-service-view .ir-hidden {position:absolute;margin:-1px;width:1px;height:1px;padding:0;border:0;white-space:nowrap;overflow:hidden;clip:rect(0, 0, 0, 0);clip-path:inset(50%);}
.content-service-view .mobile-txt {display:none;margin-top:-10px;padding-left:20px;color:#999;background:url(https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=Xw5rvb0UTyjfo1LwHfIJ7w&amp;portalId=P1) no-repeat 0 5px;background-size:15px;}
.content-service-view .help-txt {position:relative;margin:30px 0 0;padding:0 0 0 15px;font-size:13px;color:#666;}
.content-service-view .help-txt:before {content:'＊';position:absolute;left:0;top:-1px;font-size:12px;font-weight:600;color:#ec455a;}
@media screen and (max-width: 768px) {
.content-service-view img {max-width:100% !important;}
.content-service-view .mobile-txt {display:block;}
.content-service-view .iframe-wrap {position:relative;overflow:hidden;height:0;padding-top:30px;padding-bottom:56.25%;}
.content-service-view .iframe-wrap iframe {position:absolute;top:0;left:0;width:100%;height:90% !important;}
#contentsViewer .content-service-view .iframe-wrap iframe {height:90% !important;}
.content-service-view .iframe-wrap+.tit {margin-top:0;}
.content-service-view .img-banner .mo {display:block;}
.content-service-view .img-banner .mo img {width:100%;}
.content-service-view .img-banner .pc {display:none;}
}
</style>

</head>
<body>
    
<div class="content-service-view">
        <p class="info-desc idt">•&nbsp; Possible causes of echoing sound are many.</p>        <p>If the Digital Sound output is set to [Auto], then there will be a delay in sending outputs to the external
            speaker compared to the TV speaker due to voice signal output processing, and thus there may be echoing
            sounds.</p>        
<div class="img-only">
            <img alt="Image with Digital Sound Output set to Auto" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=CP2a3DxFE31IFZQ52J6jbg&amp;portalId=P1">
        </div>
        <p class="info-desc txt-idt">•&nbsp; If [Use Multiple Speakers] is enabled in the audio settings, the sound may be echoed or out
            of sync due to sound interference.</p>        
<div class="img-only">
            <img alt="Image of Use Multiple Speakers set to listen to sound through external speakers and TV speakers at the same time" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=HNquhr7egaoUhgeo9WhMQ&amp;portalId=P1"><br>
            <img alt="Appearance of the selection menus of Use Multiple Speakers" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=NUR9tSWKm5n3kvDrsDo7Nw&amp;portalId=P1">
        </div>
        <p class="info-desc idt">➔ This may be reduced by enabling the AV sync on the sound bar.</p>        <p class="info-desc idt">➔ If the sound echoes, set [Sound]→[Sound Out] to a single speaker.</p>        
<h2 class="tit">Try this</h2>
        
<h3 class="sub-tit">To change Digital Audio Out to PCM</h3>
        <p>•&nbsp;[2021 WebOS6.0] or later: Select Settings ( <img style="width: 24px; vertical-align: bottom;" alt="Setting button" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=xbbOiqhSu2iDtBP7vj6eA&amp;portalId=P1">
            ) on your remote control and select [All Settings] → [Sound] → [Advanced Settings] → [Digital Sound Output]
            → [PCM].</p>        <p>•&nbsp;[2020 WebOS5.0] or earlier: Select Settings ( <img style="width: 24px; vertical-align: bottom;" alt="Setting button" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=jjUvnntjuMKaNe5XLdwK9g&amp;portalId=P1">
            ) on your remote control and select [All Settings] → [Sound] → [Additional Settings] → [Digital Sound
            Output] → [PCM].</p><br>
        <p class="info-desc idt">➔ Setting in [2021 WebOS6.0] or later</p>        <p class="txt-idt">
            1. After turning on the TV, press the [Settings] button on the remote control.<br>
            From [Settings], select [All Settings].
        </p>        
<div class="img-only">
            <img alt="Image that enters all settings by pressing the setting button on the remote control" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=LJkFrvGsFNRi86TAs95g&amp;portalId=P1">
        </div>
        <p class="txt-idt">
            2. Select [Sound] → [Advanced Settings].
        </p>        
<div class="img-only">
            <img alt="Image of selecting Advanced Settings in Sound" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=PK93Bfd54c0mMhH56008zA&amp;portalId=P1">
        </div>
        <p class="txt-idt">
            3. Set [Digital Sound Output] to [PCM].
        </p>        
<div class="img-only">
            <img alt="Image of selecting digital sound output" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=yYvn9TlQ0NTzDphdWpiSA&amp;portalId=P1"><br>
            <img alt="Image of selecting digital sound output as PCM" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=6MUxcfLf9Xf1t5Pc6RiqfQ&amp;portalId=P1">
        </div>
        
<h3 class="sub-tit">To change the output speaker when the sound echoes</h3>
        <p class="lg-red txt-idt">※ Check the connection types to the TV and the audio devices beforehand.</p>        <p>E.g. optical cable/optical connection, HDMI cable connection, and Bluetooth connection</p>        <p>•&nbsp;[2022 WebOS22] [2021 WebOS6.0]: Select Settings ( <img style="width: 24px; vertical-align: bottom;" alt="Setting button" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=m3OcJAgac9m6Wim0x0ikA&amp;portalId=P1">
            ) → [All Settings] → [Sound] → [Sound Out].</p>        <p>•&nbsp;[2020 WebOS5.0] or earlier: Select TV Settings ( <img style="width: 24px; vertical-align: bottom;" alt="Setting button" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=3LTIjA5IaAJV6HDGnDaZdA&amp;portalId=P1">
            ) → [All Settings] → [Sound] → [Sound Out].</p><br>
        <p class="info-desc idt">➔ To set from [2022 WebOS 22] [2021 WebOS 6.0]</p>        <p class="txt-idt">1. After turning on the TV, press the [Settings] button on the remote control.<br>
            From [Settings], select [All Settings].
        </p>        
<div class="img-only">
            <img alt="Image that enters all settings by pressing the setting button on the remote control" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=JS7J3Ne6s8TNw3Yuh85vg&amp;portalId=P1">
        </div>
        <p class="txt-idt">2. Select [Sound] → [Sound Out].</p>        
<div class="img-only">
            <img alt="Image of selecting sound out during setup" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=punigviL4ramLwQQZGwQ&amp;portalId=P1">
        </div>
        <p class="txt-idt">3. From [Sound Out], change the speaker and the sound as you want.</p>        
<div class="img-only">
            <img alt="image of changing sound out setting speaker" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=B6Q0nrX851mACiluD0Azw&amp;portalId=P1">
        </div><br>
        <p class="info-desc idt">➔ [2020 WebOS5.0] or earlier</p>        <p class="txt-idt">1. After turning on the TV, press the [Settings] button on the remote control.<br>
            From [Settings], select [All Settings].
        </p>        
<div class="img-only">
            <img alt="Image that enters all settings by pressing the setting button on the remote control" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=d4Sq06bKjQP2FJX9kuA&amp;portalId=P1">
        </div>
        <p class="txt-idt">2. Select [Sound] → [Sound Out].</p>        
<div class="img-only">
            <img alt="Image of selecting Sound Out from the Sound menu" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=QMWDLQC4vSyjXLn6lBH2Xg&amp;portalId=P1">
        </div>
        <p class="txt-idt">3. Select the right speaker for the type of connection and check the sound.</p>        
<div class="img-only">
            <img alt="Sound Out Settings Images to choose while changing speakers" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=Y5HsZ4Uz8jIxuYTePcZ40A&amp;portalId=P1">
        </div>
        
<h3 class="sub-tit">If the sound is slightly out of sync, use the AV Sync on the sound bar.</h3>
        <p class="txt-idt">1. When the sound echoes, press the AV Sync on the sound bar remote control.</p>        
<div class="img-only">
            <img alt="Image of selecting the AV sync button on the soundbar remote control" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=EjOOTsTqYqV3IGjFcxVXg&amp;portalId=P1">
        </div>
        <p class="txt-idt">2. Check the sync rate displayed on the sound bar and adjust the reverberation by pressing
            the left/right arrow on the remote control.</p>        
<div class="img-only">
            <img alt="Image of adjusting the sound sync with the remote control" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=bqzDwXUEAH0UUtjmTmrQJQ&amp;portalId=P1">
        </div>
        <p class="txt-idt">3. You can adjust it in the LG SOUNDBAR App.</p>        <p class="help-txt">This guide was created for all models, so the images or content may be different from your
            product.</p>    </div>

</body>
</html>
	
</div>

Help Library

[LG TV Sync] Sound reverberates when it is put through the internal and the external speakers simultaneously

Contact