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Frequency-hopping spread spectrum

radio signal transmission method invented by Hedy Lamarr

Pronunciation
/ˈfriːkwənsi - ˈhɒpɪŋ sprɛd ˈspɛktrəm/
/ˈfrikwənsi - ˈhɑpɪŋ sprɛd ˈspɛktrəm/