The SpeechJammer consists of a directional microphone, a distance sensor, and a directional speaker that all work together to provide you with blissful silence. You point the device at the offending jibber-jabberer and the mic records his speech. After a delay of a fraction of a second, the directional speaker plays the target’s words right back at him. The distance sensor tells the device how far away the target is so that the delay can be kept consistent.
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