In some cases, they risked their lives to make their contributions recognized by the world. From Columbusâ discovery of the Americas to Hillaryâs quest up Mount Everest, the names of these great pioneers will remain important for centuries to come as the most famous explorers of all time.
The unvoiced French consonant sounds are CH, F, K, P, S, and T. All unvoiced consonants have a voiced equivalent; i.e., the pairs are pronounced in the same place in the mouth/throat but the first is unvoiced while the second is voiced: CH - J. F - V. K - G.
in this study because the phonetic contrast between voiced and voiceless stops in Arabic. appears to differ from that of English (Yeni-Komshian, Caramazza and Preston, 1977; Port, AI-ani and Maeda, 1980) and because Arabic lacks one of the stops found in English, the voiceless labial stop /p/ (AI-ani, 1970).