| 摘要 |
An audio delay and feedback apparatus includes i) a microphone for receiving an input audio signal and for generating a first electrical signal corresponding to the input audio signal, ii) a delay circuit for receiving the first electrical signal and for generating a second electrical signal corresponding to but delayed from the first electrical signal by a predetermined amount of time, and iii) earphones or a speaker for receiving the second audio signal and for generating an audio output signal corresponding thereto. An audio signal input to the microphone is delayed and fed back to the earphones so as to make speech difficult, humorous, discombobulated, and often unintelligible. The microphone, earphones and delay circuit are mounted on a headset. In one embodiment, the first electrical signal is digital and the delay circuit includes a digital memory. An A/D converter digitizes the first electrical signal and a D/A converter converts the second electrical signal to an analog signal. The system includes a memory for storing the first electrical signal and a playback circuit for selectively playing back the memory to the earphones. The playback circuit is controlled by a manually actuated switch on the headset. In an alternative embodiment, the delay circuit includes i) a moving continuous magnetic tape, ii) a write head for writing the first electrical signal onto the magnetic tape, and iii) a read head spaced from the write head for reading the first electrical signal from the tape, the read head generating the second electrical signal.
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