{"id":603,"date":"2019-11-15T10:46:29","date_gmt":"2019-11-15T01:46:29","guid":{"rendered":"https:\/\/www.etani.co.jp\/en\/wordpress\/?post_type=update&#038;p=603"},"modified":"2020-01-07T15:13:09","modified_gmt":"2020-01-07T06:13:09","slug":"fft%e8%a7%a3%e6%9e%90%e3%83%97%e3%83%ad%e3%82%b0%e3%83%a9%e3%83%a0%e3%81%a7-%e5%87%ba%e6%9d%a5%e3%82%8b%e3%81%93%e3%81%a8","status":"publish","type":"update","link":"https:\/\/www.etani.co.jp\/en\/update\/603\/","title":{"rendered":"What You Can Do in FFT Analysis"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">The FFT enables you to learn about the frequency responses (level and phase) from the wave data. The FFT Analysis program, &#8220;FFT Analyzer&#8221;, reads the obtained wave data, performs FFT calculations, and displays various analyzed results onto graphs. The FFT is not only very useful for frequency analysis of level characteristics but also for observing the changes of phase and frequency components over the elapsed time.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1\u3000Graph Display Examples<\/h3>\n\n\n\n<figure class=\"wp-block-gallery columns-2 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"648\" height=\"587\" src=\"https:\/\/www.etani.co.jp\/en\/wordpress\/wp-content\/uploads\/01FFT-All_E.bmp\" alt=\"\" data-id=\"987\" data-full-url=\"https:\/\/www.etani.co.jp\/en\/wordpress\/wp-content\/uploads\/01FFT-All_E.bmp\" data-link=\"https:\/\/www.etani.co.jp\/en\/wordpress\/01fft-all_e\/\" class=\"wp-image-987\"\/><figcaption class=\"blocks-gallery-item__caption\">Fig 1 Impulse Response &amp; Phase Characteristics<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"648\" height=\"587\" src=\"https:\/\/www.etani.co.jp\/en\/wordpress\/wp-content\/uploads\/05FFT-Wavezoom1ch_E.bmp\" alt=\"\" data-id=\"989\" data-full-url=\"https:\/\/www.etani.co.jp\/en\/wordpress\/wp-content\/uploads\/05FFT-Wavezoom1ch_E.bmp\" data-link=\"https:\/\/www.etani.co.jp\/en\/wordpress\/05fft-wavezoom1ch_e\/\" class=\"wp-image-989\"\/><figcaption class=\"blocks-gallery-item__caption\">Fig 2 Impulse Response (Enlarged)<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"648\" height=\"587\" src=\"https:\/\/www.etani.co.jp\/en\/wordpress\/wp-content\/uploads\/12FFT-Nyquist1_E.bmp\" alt=\"\" data-id=\"990\" data-full-url=\"https:\/\/www.etani.co.jp\/en\/wordpress\/wp-content\/uploads\/12FFT-Nyquist1_E.bmp\" data-link=\"https:\/\/www.etani.co.jp\/en\/wordpress\/12fft-nyquist1_e\/\" class=\"wp-image-990\"\/><figcaption class=\"blocks-gallery-item__caption\"> Fig 3 Nyquist Diagram (2D) <\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"648\" height=\"587\" src=\"https:\/\/www.etani.co.jp\/en\/wordpress\/wp-content\/uploads\/12FFT-Nyquist2_E.bmp\" alt=\"\" data-id=\"991\" data-full-url=\"https:\/\/www.etani.co.jp\/en\/wordpress\/wp-content\/uploads\/12FFT-Nyquist2_E.bmp\" data-link=\"https:\/\/www.etani.co.jp\/en\/wordpress\/12fft-nyquist2_e\/\" class=\"wp-image-991\"\/><figcaption class=\"blocks-gallery-item__caption\"> Fig 4 Nyquist Diagram (3D) <\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"648\" height=\"587\" src=\"https:\/\/www.etani.co.jp\/en\/wordpress\/wp-content\/uploads\/13FFT-RI1_E.bmp\" alt=\"\" data-id=\"998\" data-full-url=\"https:\/\/www.etani.co.jp\/en\/wordpress\/wp-content\/uploads\/13FFT-RI1_E.bmp\" data-link=\"https:\/\/www.etani.co.jp\/en\/wordpress\/13fft-ri1_e\/\" class=\"wp-image-998\"\/><figcaption class=\"blocks-gallery-item__caption\"> Fig 6 Frequency Characteristics  (Log)<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"648\" height=\"587\" src=\"https:\/\/www.etani.co.jp\/en\/wordpress\/wp-content\/uploads\/13FFT-RI2_E-1.bmp\" alt=\"\" data-id=\"999\" data-full-url=\"https:\/\/www.etani.co.jp\/en\/wordpress\/wp-content\/uploads\/13FFT-RI2_E-1.bmp\" data-link=\"https:\/\/www.etani.co.jp\/en\/wordpress\/13fft-ri2_e-2\/\" class=\"wp-image-999\"\/><figcaption class=\"blocks-gallery-item__caption\"> Fig 5 Frequency Characteristics  (Linear) <\/figcaption><\/figure><\/li><\/ul><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">1-1\u30003D-FFT<\/h3>\n\n\n\n<figure class=\"wp-block-gallery columns-2 is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"648\" height=\"587\" src=\"https:\/\/www.etani.co.jp\/en\/wordpress\/wp-content\/uploads\/15FFT-3D1_E-1.bmp\" alt=\"\" data-id=\"994\" data-full-url=\"https:\/\/www.etani.co.jp\/en\/wordpress\/wp-content\/uploads\/15FFT-3D1_E-1.bmp\" data-link=\"https:\/\/www.etani.co.jp\/en\/wordpress\/15fft-3d1_e-2\/\" class=\"wp-image-994\"\/><figcaption class=\"blocks-gallery-item__caption\"> Fig 7 Time Decay Characteristics (Log) <\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"648\" height=\"587\" src=\"https:\/\/www.etani.co.jp\/en\/wordpress\/wp-content\/uploads\/15FFT-3D2_E.bmp\" alt=\"\" data-id=\"995\" data-full-url=\"https:\/\/www.etani.co.jp\/en\/wordpress\/wp-content\/uploads\/15FFT-3D2_E.bmp\" data-link=\"https:\/\/www.etani.co.jp\/en\/wordpress\/15fft-3d2_e\/\" class=\"wp-image-995\"\/><figcaption class=\"blocks-gallery-item__caption\"> Fig 8 Time Decay Characteristics (Linear) <\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"648\" height=\"587\" src=\"https:\/\/www.etani.co.jp\/en\/wordpress\/wp-content\/uploads\/15FFT-3D3_E.bmp\" alt=\"\" data-id=\"996\" data-full-url=\"https:\/\/www.etani.co.jp\/en\/wordpress\/wp-content\/uploads\/15FFT-3D3_E.bmp\" data-link=\"https:\/\/www.etani.co.jp\/en\/wordpress\/15fft-3d3_e\/\" class=\"wp-image-996\"\/><figcaption class=\"blocks-gallery-item__caption\"> Fig 9 Time Decay Characteristics (1\/1 oct) <\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"648\" height=\"587\" src=\"https:\/\/www.etani.co.jp\/en\/wordpress\/wp-content\/uploads\/15FFT-3D4_E.bmp\" alt=\"\" data-id=\"997\" data-full-url=\"https:\/\/www.etani.co.jp\/en\/wordpress\/wp-content\/uploads\/15FFT-3D4_E.bmp\" data-link=\"https:\/\/www.etani.co.jp\/en\/wordpress\/15fft-3d4_e\/\" class=\"wp-image-997\"\/><figcaption class=\"blocks-gallery-item__caption\"> Fig 10 Time Decay Characteristics (1\/3 oct) <\/figcaption><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The FFT is short for Fast Fourier Transform. As its name implies, it is a technique that analyzes the wave components at high speed, and decomposes wave data into various frequency components, allowing you to observe the changes over the elapsed time.<\/p>\n","protected":false},"featured_media":0,"parent":0,"menu_order":25,"template":"","update_category":[22],"class_list":["post-603","update","type-update","status-publish","hentry","update_category-useful"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"The FFT enables you to learn about the frequency respon\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/www.etani.co.jp\/en\/update\/603\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.0.1\" \/>\n\t\t<meta property=\"og:locale\" content=\"ja_JP\" \/>\n\t\t<meta property=\"og:site_name\" content=\"ETANI - ETANI ELECTRONICS CO., LTD.\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"What You Can Do in FFT Analysis - 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