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Very high pitched sharp electronic beeps like alien conversation
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A variety of phrases as if being pronounced by a robot.
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Fluttery high pitch ringing zaps
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Deep and harsh rasping low pitch alien machinery
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Quick high frequency modulation
0:11
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Soft mid pitch note repeating
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Single quick and high pitch beep
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Quick mid pitch analog beep sound made with a synthetizer
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High pitch squealing and noise modulation
0:13
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high pitch squeaky and scraping electronic space morse code signal, ascending intensity