Shatovska, T.B., Klimov, I.V. and Oliynik, M.G. 2012. Research and analysis of man voice characteristics relationships with his emotional state. Eastern-European Journal of Enterprise Technologies. 2, 9(56) (Apr. 2012), 44–46. DOI:https://doi.org/10.15587/1729-4061.2012.3796.