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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 Speech interference level ： ウィキペディア英語版 Speech interference level Speech Interference Level (SIL) is an acoustical parameter calculated from sound pressure levels measured in octave bands. It is used to characterize a noise signal in the frequency range where the human ear has its highest sensitivity. The Speech Interference Level is calculated as the arithmetic mean of unweighted sound pressure levels in three or four octave bands in the 500 Hz - 4 kHz frequency range Several variants of the Speech Interference Level are in use: *PSIL: Arithmetic mean of 500 Hz, 1 kHz and 2 kHz octave bands *SIL3: Arithmetic mean of 1 kHz, 2 kHz and 4 kHz octave bands *SIL4: Arithmetic mean of 500 Hz, 1 kHz, 2 kHz and 4 kHz octave bands == References == 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「Speech interference level」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.