Patmasari, Raditiana, 		Saidah, Sofia, 		Akbar, A, AND 		Magdalena, Rita.
" DESIGN AND IMPLEMENTATION OF LEARNING TOOLS TO READ THE BRAILLE LETTERS BASED ON VOICE PROCESSING AND ARDUINO USING MEL FREQUENCY CEPSTRAL COEFFICIENT AND K-NEAREST NEIGHBOR METHOD" <em>JMECS (Journal of Measurements, Electronics, Communications, and Systems)</em> [Online], Volume 6 Number 1 (30 June 2020)