Voice changer , voice changing and voice information system untold story .

摘要

PROBLEM TO BE SOLVED: To provide a device, a method and a system for concealing a content of a voice while suppressing increase in a noise level.SOLUTION: A confidential communication system for voice information has a microphone Mic to receive a voice while a customer 6 in a booth 2 is uttering and to generate a voice signal representing the voice, a SD controller part SD to change the voice signal generated by the microphone Mic, and a speaker SP to convert the voice signal changed by the SD controller part SD into the voice and to output the voice to a neighboring booth 2' where the voice being uttered are being heard. The SD controller part SD includes a partial extraction part to extract a signal of a change subject from the voice signal generated by the microphone Mic based on a waveform of the voice signal, a partial change part to change the signal of the change subject part, and an output part to output the voice signal changed in such a way to the speaker SP.