{"id":78839,"date":"2026-09-24T23:11:31","date_gmt":"2026-09-24T23:11:31","guid":{"rendered":"http:\/\/bangla.sitestree.com\/?p=78839"},"modified":"2026-09-24T23:11:32","modified_gmt":"2026-09-24T23:11:32","slug":"signal-and-electrical-signal","status":"publish","type":"post","link":"http:\/\/bangla.sitestree.com\/?p=78839","title":{"rendered":"Signal and Electrical Signal"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">A <strong>signal<\/strong> is a physical quantity that changes over time or space.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Examples include changes in sound pressure, light, temperature, voltage, or current.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">An <strong>electrical signal<\/strong> is a changing electrical quantity, usually <strong>voltage or current<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In electrical and electronics textbooks, signals are often shown as graphs:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Voltage\n  \u2191\n  |      \/\u203e\\      \/\u203e\\\n  |     \/   \\    \/   \\\n  |____\/     \\__\/     \\____ \u2192 Time<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">In this graph:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>the horizontal axis represents <strong>time<\/strong>,<\/li>\n\n\n\n<li>the vertical axis represents the <strong>signal value<\/strong>, often voltage,<\/li>\n\n\n\n<li>the curve shows how that value changes over time.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">So, in simple terms:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Signal:<\/strong> a physical quantity that changes.<br><strong>Electrical signal:<\/strong> a voltage or current that changes over time.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>From AI Tools as is.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A signal is a physical quantity that changes over time or space. Examples include changes in sound pressure, light, temperature, voltage, or current. An electrical signal is a changing electrical quantity, usually voltage or current. In electrical and electronics textbooks, signals are often shown as graphs: In this graph: So, in simple terms: Signal: a &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"http:\/\/bangla.sitestree.com\/?p=78839\">Continue reading<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[265],"tags":[],"class_list":["post-78839","post","type-post","status-publish","format-standard","hentry","category-telecommunications","item-wrap"],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":71266,"url":"http:\/\/bangla.sitestree.com\/?p=71266","url_meta":{"origin":78839,"position":0},"title":"Difference: Auto-Regressive and Auto Correlation.","author":"Sayed","date":"September 27, 2021","format":false,"excerpt":"If you can, answer the question below: Write your answer in the comment box. Difference: Auto-Regressive and Auto Correlation.","rel":"","context":"In &quot;Matrix and Signal Processing&quot;","block_context":{"text":"Matrix and Signal Processing","link":"http:\/\/bangla.sitestree.com\/?cat=1944"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":321,"url":"http:\/\/bangla.sitestree.com\/?p=321","url_meta":{"origin":78839,"position":1},"title":"Word 2010 Essential &#8211; 73. 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What is the relation between Auto-Regressive Process and Toeplitz systems?","rel":"","context":"In &quot;Matrix and Signal Processing&quot;","block_context":{"text":"Matrix and Signal Processing","link":"http:\/\/bangla.sitestree.com\/?cat=1944"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":71274,"url":"http:\/\/bangla.sitestree.com\/?p=71274","url_meta":{"origin":78839,"position":4},"title":"Can we say that voice and video signals, sinewaves-plus-noise, signals in control systems and signals induced by earthquakes are some examples of Auto-Regressive Processes?","author":"Sayed","date":"September 27, 2021","format":false,"excerpt":"If you can, answer the question below: Write your answer in the comment box. Can we say that voice and video signals, sinewaves-plus-noise, signals in control systems and signals induced by earthquakes are some examples of Auto-Regressive Processes?","rel":"","context":"In &quot;Matrix and Signal Processing&quot;","block_context":{"text":"Matrix and Signal Processing","link":"http:\/\/bangla.sitestree.com\/?cat=1944"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1155,"url":"http:\/\/bangla.sitestree.com\/?p=1155","url_meta":{"origin":78839,"position":5},"title":"Excel 2013 Tips,Tricks and Shortcuts (Bengali) &#8211; 22. Auto fill in Excel (\u098f\u0995\u09cd\u09b8\u09c7\u09b2\u09c7\u09b0 \u09e8\u09e6\u09e7\u09e9 \u099f\u09bf\u09aa\u09b8, \u099f\u09cd\u09b0\u09bf\u0995\u09b8 \u098f\u09ac\u0982 \u09b6\u09b0\u09cd\u099f\u0995\u09be\u099f (\u09ac\u09be\u0982\u09b2\u09be) &#8211; \u09e8\u09e8. \u098f\u0995\u09cd\u09b8\u09c7\u09b2 \u098f \u0985\u099f\u09cb \u09ab\u09bf\u09b2)","author":"Author-Check- Article-or-Video","date":"April 18, 2013","format":false,"excerpt":"","rel":"","context":"In &quot;Complete Courses&quot;","block_context":{"text":"Complete Courses","link":"http:\/\/bangla.sitestree.com\/?cat=29"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"jetpack_featured_media_url":"","_links":{"self":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/78839","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=78839"}],"version-history":[{"count":1,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/78839\/revisions"}],"predecessor-version":[{"id":78840,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/78839\/revisions\/78840"}],"wp:attachment":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=78839"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=78839"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=78839"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}