Конахович, Г. Ф., О. І. Давлет’янц, О. Ю. Лавриненко, and Д. І. Бахтіяров. “THE COMPARATIVE ANALYSIS THE FOURIER TRANSFORM, COSINE TRANSFORM AND WAVELET TRANSFORM AS A SPECTRAL ANALYSIS OF THE DIGITAL SPEECH SIGNALS”. Science-Based Technologies, vol. 27, no. 3, Sept. 2015, pp. 210-2, doi:10.18372/2310-5461.27.9387.