Combining a directional microphone and a directional speaker, the “Speechjammer” records and quickly plays back whatever words someone is uttering, making it very difficult for the speaker to focus on what words come next. The effect is called “artificial stuttering.”
via rawstory.com
Because the directional amplifier can only be heard by the person it is pointing at, the gun’s effect is like hearing a recording of one’s own voice echoing inside one’s skull.
“sonic projector” as a means of inserting messages into brain or hiding secret communications.
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