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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Autocorrelation ： ウィキペディア英語版 Autocorrelation Autocorrelation, also known as serial correlation or cross-autocorrelation,〔Google Books https://books.google.de/books?id=V46p_mH99m8C&lpg=PA17&dq=crossautocorrelation&hl=de&pg=PA17#v=onepage&q=crossautocorrelation&f=false〕 is the cross-correlation of a signal with itself at different points in time (that is what the cross stands for). Informally, it is the similarity between observations as a function of the time lag between them. It is a mathematical tool for finding repeating patterns, such as the presence of a periodic signal obscured by noise, or identifying the missing fundamental frequency in a signal implied by its harmonic frequencies. It is often used in signal processing for analyzing functions or series of values, such as time domain signals. ==Definitions== Different fields of study define autocorrelation differently, and not all of these definitions are equivalent. In some fields, the term is used interchangeably with autocovariance. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Autocorrelation」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.