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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 Gammatone filter ： ウィキペディア英語版 Gammatone filter A gammatone filter is a linear filter described by an impulse response that is the product of a gamma distribution and sinusoidal tone. It is a widely used model of auditory filters in the auditory system. The gammatone impulse response is given by :$$ g(t) = at^ e^ \cos(2\pi ft + \phi), \, where $f$ (in Hz) is the center frequency, $\backslash phi$ (in radians) is the phase of the carrier, $a$ is the amplitude, $n$ is the filter's order, $b$ (in Hz) is the filter's bandwidth, and $t$ (in seconds) is time. This is a sinusoid (a pure tone) with an amplitude envelope which is a scaled gamma distribution function.〔 〕 ==Variations== Variations and improvements of the gammatone model of auditory filtering include the gammachirp filter, the all-pole and one-zero gammatone filters, the two-sided gammatone filter, and filter cascade models, and various level-dependent and dynamically nonlinear versions of these.〔 〕 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「Gammatone filter」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.