Patmasari R, Saidah S, Akbar AF, Magdalena R. 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. JMECS [Internet]. 2020 Jun. 30 [cited 2025 Sep. 10];6(1):28-33. Available from: https://journals.telkomuniversity.ac.id/jmecs/article/view/2019