EVIN Diego Alexis
Implementation of a Speech Recognition System in a DSC
ALEJANDRO GASTÓN ALVAREZ; DIEGO A. EVIN; SEBASTIÁN VERRASTRO
IEEE LATIN AMERICA TRANSACTIONS
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Lugar: New York; Año: 2016 vol. 14 p. 2657 - 2657
This paper describes the development and validation of an Embedded IsolatedWord Recognition System (IWR) for the Argentinian Spanish language, implemented on the STM32F4-Discovery platform. Its front-end extracts Mel Frequency Cepstral Coefficients (MFCC), while its classification step is based on the Dynamic Time Warping (DTW) algorithm Since the system was conceived as a base platform for the research and development of speech based command and control applications, it was designed to be modular and to meet real-time performance. The system includes a Real Time Operating System (RTOS) to manage various processing and control tasks, which can be easily reconfigured with different acquisition, processing and recognition parameters using a single file. The validation was done using a scenario of robotic control, achieving performance rates which demonstrates the practical usefulness of the system.