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Submission + - One-Way Sound Walls Proven Possible (discovery.com)

disco_tracy writes: Imagine a room where a band is playing. Neighbors can't hear the music, but if someone outside the room is talking, the musicians can hear it. The concept — a kind of one-way mirror for sound — seems imaginary, but two Italian scientists recently pushed this kind of sound manipulating technology closer to reality.
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One-Way Sound Walls Proven Possible

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The means-and-ends moralists, or non-doers, always end up on their ends without any means. -- Saul Alinsky

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