Paola Vitolo, Rosalba Liguori, Luigi Di Benedetto, Alfredo Rubino, Danilo Pau, Gian Domenico Licciardo: A New NN-Based Approach to In-Sensor PDM-to-PCM Conversion for Ultra TinyML KWS. IEEE Trans. Circuits Syst. II Express Briefs 70(4): 1595-1599 (2023)