{"id":3971,"date":"2023-01-09T10:43:39","date_gmt":"2023-01-09T10:43:39","guid":{"rendered":"https:\/\/8thclass.deltapublications.in\/?page_id=3971"},"modified":"2025-11-21T09:47:20","modified_gmt":"2025-11-21T09:47:20","slug":"s-13-b-sound-produced-by-humans","status":"publish","type":"page","link":"https:\/\/8thclass.deltapublications.in\/index.php\/s-13-b-sound-produced-by-humans\/","title":{"rendered":"s-13.b Sound Produced By Humans"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color has-huge-font-size\" style=\"color:#00056d;text-transform:uppercase\"><strong>Sound Produced By Humans<\/strong><\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div style=\"position: relative; width: 100%; height: 0; padding-top: 56.2500%;\n padding-bottom: 0; box-shadow: 0 2px 8px 0 rgba(63,69,81,0.16); margin-top: 1.6em; margin-bottom: 0.9em; overflow: hidden;\n border-radius: 8px; will-change: transform;\">\n  <iframe loading=\"lazy\" style=\"position: absolute; width: 100%; height: 100%; top: 0; left: 0; border: none; padding: 0;margin: 0;\"\n    src=\"https:\/\/www.canva.com\/design\/DAF65Co_u1I\/Xn2gplz4rnZl82TknLeYiw\/watch?embed\" allowfullscreen=\"allowfullscreen\" allow=\"fullscreen\">\n  <\/iframe>\n<\/div>\n<a href=\"https:&#x2F;&#x2F;www.canva.com&#x2F;design&#x2F;DAF65Co_u1I&#x2F;Xn2gplz4rnZl82TknLeYiw&#x2F;watch?utm_content=DAF65Co_u1I&amp;utm_campaign=designshare&amp;utm_medium=embeds&amp;utm_source=link\" target=\"_blank\" rel=\"noopener\">sound is produced by humans<\/a> by Delta publications\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-text-color has-link-color has-huge-font-size wp-elements-c2500cde28ee9c36cf3fd569b87bcbd7\" style=\"color:#75008b\">Key Notes :<\/p>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-df20b08bb805825bd383bf267dd57918\" style=\"color:#000060\"><strong>Sound Production Mechanism in Humans<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Humans produce sound using their <strong>vocal cords<\/strong> (also called vocal folds).<\/li>\n\n\n\n<li>The <strong>larynx<\/strong> (voice box), located in the throat, houses the vocal cords.<\/li>\n\n\n\n<li>When air from the lungs passes through the vocal cords, they <strong>vibrate<\/strong>, creating sound.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-e68e5ab9c8ec0135f4d9ef266d9c82ac\" style=\"color:#000060\"><strong>Role of the Vocal Cords<\/strong>:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/image-47-1024x576.png\" alt=\"\" class=\"wp-image-18304\" style=\"width:517px;height:auto\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/image-47-1024x576.png 1024w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/image-47-300x169.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/image-47-768x432.png 768w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/image-47.png 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>The vocal cords are <strong>elastic bands of tissue<\/strong> that can be tightened or loosened.<\/li>\n\n\n\n<li><strong>Tightening the cords<\/strong> produces a higher pitch, while <strong>loosening them<\/strong> results in a lower pitch.<\/li>\n\n\n\n<li>The frequency of vibration of the vocal cords determines the <strong>pitch of the sound<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-452e69516f2257a1ffd4f2d82365238f\" style=\"color:#000060\"><strong>Airflow and Sound Production<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Breathing out (exhalation)<\/strong> provides the air needed to vibrate the vocal cords.<\/li>\n\n\n\n<li>The <strong>force of the airflow<\/strong> can affect the loudness of the sound produced.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-315b7b8da8326d22b321312e0ca8f577\" style=\"color:#000060\"><strong>Role of the Mouth, Tongue, and Lips<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>After sound is produced by the vocal cords, it is <strong>modified by the mouth<\/strong>, <strong>tongue<\/strong>, and <strong>lips<\/strong>.<\/li>\n\n\n\n<li>These parts help in <strong>articulating different sounds<\/strong>, which allows us to form <strong>words and speech<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-e30af55fc00ed8417ea42f0fd094906d\" style=\"color:#000060\"><strong>Pitch and Volume Control<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Pitch<\/strong> is controlled by the tension and length of the vocal cords.<\/li>\n\n\n\n<li><strong>Volume (loudness)<\/strong> is determined by the force with which air is expelled from the lungs.<\/li>\n\n\n\n<li>Stronger airflow results in a <strong>louder sound<\/strong>, while gentler airflow produces a <strong>softer sound<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-8d5ae0bad8d9c581a0c9480eb430ddb2\" style=\"color:#000060\"><strong>How Do We Change Our Voice?<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>By adjusting the <strong>shape of the vocal tract<\/strong> (mouth, throat, and nasal passages), we can change the <strong>tone<\/strong> of our voice.<\/li>\n\n\n\n<li>People can <strong>intentionally alter their voice<\/strong> to speak, sing, or mimic different sounds.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-1a02e299bba3817324b87d6122142145\" style=\"color:#000060\"><strong>Voice Quality Differences<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>The <strong>size and shape of a person\u2019s vocal cords<\/strong> affect the <strong>quality of their voice<\/strong>.<\/li>\n\n\n\n<li>Men generally have <strong>thicker and longer vocal cords<\/strong>, which produce <strong>lower-pitched sounds<\/strong> than women and children.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-c15dd81b4eec2a6a56ce53cf57812320\" style=\"color:#000060\"><strong>Common Disorders of the Vocal Cords<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Hoarseness<\/strong>, <strong>loss of voice<\/strong>, and other issues can occur if the vocal cords are <strong>overused or strained<\/strong>.<\/li>\n\n\n\n<li>Conditions like <strong>laryngitis<\/strong> (inflammation of the larynx) can affect sound production.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-85b89a826b3b208d429416a82cf6ecc2\" style=\"color:#000060\"><strong>Fun Facts<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>The average human speaks at a frequency range between <strong>85 Hz to 255 Hz<\/strong>.<\/li>\n\n\n\n<li>Professional singers and trained speakers can control their <strong>breathing and vocal cords<\/strong> to produce a wide range of sounds.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-large-font-size\" style=\"color:#d90000\"><strong>Let&#8217;s practice!<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/81285\/279\/678\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-119.png\" alt=\"\" class=\"wp-image-7882\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-119.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-119-300x300.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-119-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/81360\/232\/200\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-118.png\" alt=\"\" class=\"wp-image-7883\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-118.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-118-300x300.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-118-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Sound Produced By Humans sound is produced by humans by Delta publications Key Notes : Sound Production Mechanism in Humans: Role of the Vocal Cords: Airflow and Sound Production: Role of the Mouth, Tongue, and Lips: Pitch and Volume Control: How Do We Change Our Voice?: Voice Quality Differences: Common Disorders of the Vocal Cords:<a class=\"more-link\" href=\"https:\/\/8thclass.deltapublications.in\/index.php\/s-13-b-sound-produced-by-humans\/\">Continue reading <span class=\"screen-reader-text\">&#8220;s-13.b Sound Produced By Humans&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-3971","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_hostinger_reach_plugin_has_subscription_block":false,"_hostinger_reach_plugin_is_elementor":false,"_links":{"self":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3971","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=3971"}],"version-history":[{"count":18,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3971\/revisions"}],"predecessor-version":[{"id":22366,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3971\/revisions\/22366"}],"wp:attachment":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3971"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}