translate English to French: Each editor has devised its own sonic recipe (or licenced it from someone else), usually based of gates, FIR-FFT filters, wavelet thresholding, convolution, etc. iZotope has developed its own technology, and doesn't give a lot of details on it.
Chaque éditeur concocte sa propre cuisine à base de gates, filtres FIR-FFT, wavelet thresholding, convolution, etc. iZotope propose sa technologie, sans donner de détails particuliers sur les moyens employés.