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Duration: 6:30. </span> <span class="stat attribution"><span class="">Tektronix</span></span> <span class="stat view-count">554,069 views</span> </a> </div> <div class="thumb-wrapper"> <a href="/web/20200223072349/https://www.youtube.com/watch?v=zKKGA30bHG0" class=" vve-check thumb-link spf-link yt-uix-sessionlink spf-link " data-sessionlink="itct=CBcQpDAYDiITCK2V_42S5-cCFdfXxAodZjcI-DIHcmVsYXRlZEjH78-Og5jsnBY" tabindex="-1" rel=" spf-prefetch nofollow" data-visibility-tracking="CBcQpDAYDiITCK2V_42S5-cCFdfXxAodZjcI-EDtuOzot8Ch0cwB" aria-hidden="true"><span class="yt-uix-simple-thumb-wrap yt-uix-simple-thumb-related" data-vid="zKKGA30bHG0"><img src="/web/20200223072349im_/https://www.youtube.com/yts/img/pixel-vfl3z5WfW.gif" aria-hidden="true" data-thumb="https://web.archive.org/web/20200223072349/https://i.ytimg.com/vi/zKKGA30bHG0/hqdefault.jpg?sqp=-oaymwEiCKgBEF5IWvKriqkDFQgBFQAAAAAYASUAAMhCPQCAokN4AQ==&rs=AOn4CLDcYiXxnvbyUSlhvAqOJb6bEDi5SQ" width="168" height="94" style="top: 0px" alt=""><span class="video-time">6:30</span></span></a> </div> </li><li class="video-list-item related-list-item show-video-time related-list-item-compact-video"> <div class="content-wrapper"> <a href="/web/20200223072349/https://www.youtube.com/watch?v=z7X6jgFnB6Y" class=" content-link spf-link yt-uix-sessionlink spf-link " data-sessionlink="itct=CBYQpDAYDyITCK2V_42S5-cCFdfXxAodZjcI-DIHcmVsYXRlZEjH78-Og5jsnBY" title="FFT basic concepts" rel=" spf-prefetch nofollow" data-visibility-tracking="CBYQpDAYDyITCK2V_42S5-cCFdfXxAodZjcI-ECmj5yL4NH-2s8B"> <span dir="ltr" class="title" aria-describedby="description-id-878785"> FFT basic concepts </span> <span class="accessible-description" id="description-id-878785"> - Duration: 7:27. </span> <span class="stat attribution"><span class="">NTS</span></span> <span class="stat view-count">217,502 views</span> </a> </div> <div class="thumb-wrapper"> <a href="/web/20200223072349/https://www.youtube.com/watch?v=z7X6jgFnB6Y" class=" vve-check thumb-link spf-link yt-uix-sessionlink spf-link " data-sessionlink="itct=CBYQpDAYDyITCK2V_42S5-cCFdfXxAodZjcI-DIHcmVsYXRlZEjH78-Og5jsnBY" tabindex="-1" rel=" spf-prefetch nofollow" data-visibility-tracking="CBYQpDAYDyITCK2V_42S5-cCFdfXxAodZjcI-ECmj5yL4NH-2s8B" aria-hidden="true"><span class="yt-uix-simple-thumb-wrap yt-uix-simple-thumb-related" data-vid="z7X6jgFnB6Y"><img src="/web/20200223072349im_/https://www.youtube.com/yts/img/pixel-vfl3z5WfW.gif" aria-hidden="true" data-thumb="https://web.archive.org/web/20200223072349/https://i.ytimg.com/vi/z7X6jgFnB6Y/hqdefault.jpg?sqp=-oaymwEiCKgBEF5IWvKriqkDFQgBFQAAAAAYASUAAMhCPQCAokN4AQ==&rs=AOn4CLBW4_gVPThaGL1bS-Z4E-RkM1jSUQ" width="168" height="94" style="top: 0px" alt=""><span class="video-time">7:27</span></span></a> </div> </li><li class="video-list-item related-list-item show-video-time related-list-item-compact-video"> <div class="content-wrapper"> <a href="/web/20200223072349/https://www.youtube.com/watch?v=r6sGWTCMz2k" class=" content-link spf-link yt-uix-sessionlink spf-link " data-sessionlink="itct=CBQQpDAYECITCK2V_42S5-cCFdfXxAodZjcI-DIHcmVsYXRlZEjH78-Og5jsnBY" title="But what is a Fourier series? 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href="/web/20200223072349/https://www.youtube.com/watch?v=xhO8iz2qCOE" class=" vve-check thumb-link spf-link yt-uix-sessionlink spf-link " data-sessionlink="itct=CBIQpDAYEiITCK2V_42S5-cCFdfXxAodZjcI-DIHcmVsYXRlZEjH78-Og5jsnBY" tabindex="-1" rel=" spf-prefetch nofollow" data-visibility-tracking="CBIQpDAYEiITCK2V_42S5-cCFdfXxAodZjcI-EDhkajts5HvicYB" aria-hidden="true"><span class="yt-uix-simple-thumb-wrap yt-uix-simple-thumb-related" data-vid="xhO8iz2qCOE"><img src="/web/20200223072349im_/https://www.youtube.com/yts/img/pixel-vfl3z5WfW.gif" aria-hidden="true" data-thumb="https://web.archive.org/web/20200223072349/https://i.ytimg.com/vi/xhO8iz2qCOE/hqdefault.jpg?sqp=-oaymwEiCKgBEF5IWvKriqkDFQgBFQAAAAAYASUAAMhCPQCAokN4AQ==&rs=AOn4CLBxlzEAi9cTxQXItpm2fzFIb0eAxA" width="168" height="94" style="top: 0px" alt=""><span class="video-time">20:46</span></span></a> </div> </li><li class="video-list-item related-list-item show-video-time related-list-item-compact-video"> <div 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