An optimum linear phase approximation with small delay obtained by the manipulation of all-pass Padé approximants. - Douglas David Baptista de Souza; Sidnei Noceti Filho (ISCAS, 2011)

A modified time-frequency method for testing wide-sense stationarity. - Douglas David Baptista de Souza; Jocelyn Chanussot; Anne-Catherine Favre; Pierre Borgnat (ICASSP, 2012)

On selecting relevant intrinsic mode functions in empirical mode decomposition: An energy-based approach. - Douglas David Baptista de Souza; Jocelyn Chanussot; Anne-Catherine Favre (ICASSP, 2014)

A new nonparametric method for testing stationarity based on trend analysis in the time marginal distribution. - Douglas David Baptista de Souza; Jocelyn Chanussot; Anne-Catherine Favre; Pierre Borgnat (ICASSP, 2014)

On generating a finite pulse or a symmetric impulse response by a generalized approximation function. - Douglas David Baptista de Souza; Sidnei Noceti Filho (LASCAS, 2014)

A nonparametric test for slowly-varying nonstationarities. - Douglas David Baptista de Souza; Jocelyn Chanussot; Anne-Catherine Favre; Pierre Borgnat (Signal Process., 2018)

An Improved Stationarity Test Based on Surrogates. - Douglas David Baptista de Souza; Jocelyn Chanussot; Anne-Catherine Favre; Pierre Borgnat (IEEE Signal Process. Lett., 2019)

A Time-Varying Autoregressive Model for Characterizing Nonstationary Processes. - Douglas David Baptista de Souza; Eduardo Vinicius Kuhn; Rui Seara (IEEE Signal Process. Lett., 2019)

Multitaper-Mel Spectrograms for Keyword Spotting. - Douglas David Baptista de Souza; Khaled Jamal Bakri; Fernanda de Souza Ferreira; Juliana Camilo Inácio (IEEE Signal Process. Lett., 2022)

Data Augmentation of Multivariate Sensor Time Series using Autoregressive Models and Application to Failure Prognostics. - Douglas David Baptista de Souza; Bruno Paes Leao (CoRR, 2024)