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01-MSMVP

ノイズキャンセリングソフト

ノイズキャンセルだけするソフトってないんだろうか。

ヘッドホンでこの機能追加ものが最近は主流になっているみたいだけど、音楽いらねーからキャンセルだけ。

それとも効果ないのかなー

ソフトで作るのも簡単で、マイナス波に変えて鳴らすだけでいいと思うんだけど。

くわしいひとおしえてぷりーず

投稿日時 : 2007年9月22日 9:20

コメントを追加

# re: ノイズキャンセリングソフト 2007/09/22 10:18 Hirotow

ほとんど詳しくないけどこんな感じだとおもわれ。

・マイク入力から音を拾う(ヘッドフォンやスピーカーから近いほうがいいがハウリングを起こしやすいのでそこら辺は対処が必要)
・処理タイムラグ時間先の外部音を予測→逆位相化→ヘッドフォンやスピーカの特性に合わせた加工。
・音を出力。

# re: ノイズキャンセリングソフト 2007/09/22 10:20 ひろえむ

私も一昔前のしかわかりませんが、SteinbergのCleanなんかがそうですよね。

あとは、シーケンスソフトなどに入っているVSTプラグインのNoiseGateとか。

私はノイズを取りたい場合はCubase3SXを持っているので波形をいじってちょいちょいとかNoiseゲートやらCompなどを使ったりグライコ触ったり・・・って感じですねー。

ほかに何かよさげなツールはあるのかしら?(^^;

# re: ノイズキャンセリングソフト 2007/09/22 10:25 ひろえむ

あ、url載せるの忘れましたね。
http://www.watch.impress.co.jp/av/docs/20030212/stein.htm

これです。

でも、今の環境でちゃんと動作するかは未確認です(^^;

最近だとWavelabなんかを使うようですねー。
まま、ここまでくるとプロ仕様みたいな感じでちょっとお高くなりますが・・・。
http://www.japan.steinberg.net/721.html

# re: ノイズキャンセリングソフト 2007/09/22 10:38 りょーいち

昔、騒音対策用に作れないのかなーってちょっと調べたのですが、業務用(?)っぽい装置一式みたいなのしか見当たりませんでした。

推測ですが、ヘッドホンなら耳付近の音を逆位相にして出力すればいいのですが、スピーカー使って鳴らす場合、耳から距離があるので、拾った音と逆位相の音がきれいに重なる場所だけ静かに聞こえると思うんです。

となると、いる位置にあわせてセッティングしないといけない、セッティングしたら動けない、360度スピーカーとマイクで全方向からの音を消すしかない、となって、結局ヘッドホンのほうが手軽で現実的、ということになるのかなー、と。

ヘッドホンだけで実現するなら BOSE の「クワイアットコンフォート」とかいう製品がありますよー

# re: ノイズキャンセリングソフト 2007/09/22 10:42 りょーいち

あれ、もしかして手元の音ファイルの騒音カットしたいって意味だったのかしら?^^;
ちょっと見当違いのコメントだったかもw

# re: ノイズキャンセリングソフト 2007/09/22 13:22 中博俊

いや、あってますよ。
スピーカーから鳴らしたいとかじゃなくって、対応ヘッドホンじゃなくて、PCだけでやればいいじゃんと。
フリーソフトはないのかな・・・

# re: ノイズキャンセリングソフト 2007/09/22 15:42 凪瀬

逆位相を出すためには音を拾う必要があるわけで、ヘッドホンのスピーカ部近くにマイクが存在している必要があるのでは?
PCだけでやるとしてマイクはどうするんだろう?
マイク入力に別途挿すのでしょうか?

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