Bayesian Spectral Inference for Time Series R package beyondWhittle version 1.3.1 CRAN Task View: TimeSeries (https://CRAN.R-project.org/view=TimeSeries) Implementations of Bayesian parametric, nonparametric and semiparametric procedures for univariate and multivariate time series. The package is based on the methods presented in C. Kirch et al (2018) <doi:10.1214/18-BA1126>, A. Meier (2018) <https://opendata.uni-halle.de//handle/1981185920/13470> and Y. Tang et al (2025) <doi:10.1080/01621459.2025.2594191>. It was supported by DFG grants KI 1443/3-1 and KI 1443/3-2. Software Imports: ltsa (>= 1.4.6), Rcpp (>= 0.12.5), MASS, forecast LinkingTo: Rcpp, RcppArmadillo, BH Suggests: testthat (>= 3.0.0) Renate Meyer <renate.meyer@auckland.ac.nz> Comprehensive R Archive Network (CRAN) Alexander Meier [aut], Claudia Kirch [aut], Matthew C. Edwards [aut], Renate Meyer [aut, cre], Yifu Tang [aut] GPL (>= 3) 2026-04-15 application/tgz https://CRAN.R-project.org/package=beyondWhittle doi:10.32614/CRAN.package.beyondWhittle