From 1971 to 1975 the General Conference on Weights and Measures and the International Committee for Weights and Measures made a series of decisions that designated the BIPM time scale International Atomic Time (TAI).
fɹʌm nˈaɪntiːnhˈʌndɹɪd sˈɛvənti wˈʌn tə nˈaɪntiːnhˈʌndɹɪd sˈɛvənti fˈaɪv ðə dʒˈɛnɚɹəl kˈɑːnfɹəns ˌɔn wˈeɪts ænd mˈɛʒɚz ænd ðɪ ˌɪntɚnˈæʃənəl kəmˈɪɾi fɔːɹ wˈeɪts ænd mˈɛʒɚz mˌeɪd ɐ sˈɪɹiz ʌv dᵻsˈɪʒənz ðæt dˈɛzɪɡnˌeɪɾᵻd ðə bˈɪpəm tˈaɪm skˈeɪl ˌɪntɚnˈæʃənəl ɐtˈɑːmɪk tˈaɪm tˌiːˌeɪˈaɪ.