础耻诲补肠颈迟测を使った音声ノイズ除去手顺

Jul 9, 20126 likes35,584 views

Tasuku Abe

Audacity 2.0.0 を使った録音音声のノイズ除去の簡易的な手順解説

概要
● オープンソースの音声編集ソフト「 Audacity 」を
使った、ノイズ除去の手順を紹介します

注意
● 除去できるノイズ
– 「サー」「ゴー」といった「鳴り続ける」ノイズ

● 除去できないノイズ
– 「ブチッ」「ボフッ」といった突発的なノイズ

注意の補足
● 以下のようなケースで効果を発揮します
1.録音機材の都合でノイズが入ってしまった場合
2.「冷暖房の作動音」や「換気扇の音」などが入ってし
まった場合

手順２：ノイズの取得 (2/3)
?メニューから
[ エフェクト ]→[ ノイズの除去 ] を選択

手順２：ノイズの取得 (3/3)
? [ ノイズプロファイルの取得 ] を押下

※[ ノイズの除去 ] ウィンドウが
　自動で閉じられます。

手順３：ノイズの除去 (1/3)
?トラック全体を選択します

※ ここらへんをクリックしても
　選択できます

手順３：ノイズの除去 (2/3)
?メニューから
[ エフェクト ]→[ ノイズの除去 ] を選択

手順３：ノイズの除去 (3/3)
?良い感じに設定して [OK] を押下

※ 正解はないので色々試します
　 ( だいたい初期設定で OK)

手順の補足
● ノイズ取得用の無音部分
ノイズ取得に使用するため、１０秒程度の無音部分
を録音しておくと精度が上がります
● パラメータ設定の試行錯誤
ノイズ除去がうまくいかない場合は Ctrl+Z 等で元の
状態に戻して色々試します

● 使用ソフト
– Audacity 2.0.0
– LibreOffice 3.5.4.2

●
Blog
– http://d.hatena.ne.jp/task_abe/

以上

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