Implementación de un Sistema de Reconocimiento del Habla en un DSC (Implementation of a Speech Recognition System in a DSC)

Alejandro Gastón Alvarez (alegasalv@gmail.com.ar)1, Diego Alexis Evin (diegoevin@gmail.com)2, Sebastián Verrastro (sebastian_verrastro@yahoo.com.ar)1


1Universidad Tecnológica Nacional - Facultad REgional Buenos Aires
2Laboratorio de Investigaciones Sensoriales, INIGEM, CONICET-UBA

This paper appears in: Revista IEEE América Latina

Publication Date: June 2016
Volume: 14,   Issue: 6 
ISSN: 1548-0992


Abstract:
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 speechbased 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.

Index Terms:
Embedded ASR, DSC, IWR, DTW, MFCC.   


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