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Assignments - Digital Filters (INCT)

Module by: Yoji Yamada, Hironori Takaryo. E-mail the authors

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(1)図4の入力信号は、正弦波に雑音を加えた信号をサンプリングした信号である。図4の横軸をよくみるとわかるように、この信号は正弦波1周期を20点でサンプリングしている。この正弦波のディジタル周波数(正規化周波数)を示せ。

(2)各課題でのFIRフィルタの振幅特性から、FIRフィルタリング前後の信号波形の変化をできるだけ定量的に説明せよ(x(n)とy(n)について、信号の大きさ・波形の変化を比較する)。

(3)FIRフィルタとIIRフィルタの特徴を調べ、比較せよ。

(4)インパルス応答の値をさまざまに変えることで、特性の異なるフィルタを実現できる。希望の処理を行うために適切なインパルス応答の値を決定することが、ディジタルフィルタの設計に相当する。どのようなディジタルフィルタ設計法が あり、それぞれどのような特徴を持つかを調べてみよ。

(5)感想を記せ。

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Rating system

Ratings

Ratings allow you to judge the quality of modules. If other users have ranked the module then its average rating is displayed below. Ratings are calculated on a scale from one star (Poor) to five stars (Excellent).

How to rate a module

Hover over the star that corresponds to the rating you wish to assign. Click on the star to add your rating. Your rating should be based on the quality of the content. You must have an account and be logged in to rate content.

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