| 摘要 |
The invention concerns a method and a system for use in a radiotelephone, cellular, portable, wire telephone, mobile-wire telephone, any other type of telephone, which enable to attenuate, scramble, suppress, all or part of the sound emitted by the user's voice, which is propagated outside the apparatus during a telephone conversation. The method enables to generate simultaneously during a telephone conversation, appropriate synthetic sounds, and, as the case may be, identical or close in power, frequency, modulation, but in phases suitably shifted relative to those contained in the user's spectral speech pattern, so that the sound of the user's voice which is propagated outside the telephone, combined with the result of the method, counter each other to produce the desired effect. The method is based on the user's spectral speech pattern. The sounds produced by the user's voice, are sensed by an appropriate receiver. The electric or sound wave signals are analysed and electronically reconditioned by the system, they are then transformed into acoustic waves and broadcast simultaneously with the conversation. To produce the desired effect, they directly or indirectly interfere with the acoustic waves produced by the user's words. The method comprises: an acoustic signal sensor; a signal analyser and processor, a generator transmitting transformed signals; and, if required, power supply or auxiliary battery.
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