URL:https://d10j3mvrs1suex.cloudfront.net/u/473653/d1b5647566c3f55a7194776e2ebf5d8ba02c0552/original/3-3-characteristics-of-sinusoidal-signals1.jpg/!!/meta:eyJzcmNCdWNrZXQiOiJiemdsZmlsZXMifQ==/b:W10=.jpg
掲載元:https://hedflux.com/blogs/the-biog-blog/posts/6922604/the-humble-sine-wave