ɡɹˈeɪ nˈɔɪz ɪz ɹˈændəm nˈɔɪz hˌuːz fɹˈiːkwənsi spˈɛktɹəm fˈɑːloʊz ɐn ˈiːkwəllˈaʊdnəs kˈɑːntʊɹ sˈʌtʃ ɐz ɐn ɪnvˈɜːɾᵻd ˈeɪwˈeɪɾɪŋ kˈɜːv.
Grey noise is random noise whose frequency spectrum follows an equal-loudness contour (such as an inverted A-weighting curve).