Memorias de investigación
Research Publications in journals:
Low-Cost Speaker and Language Recognition Systems Running on a Raspberry Pi
Year:2014

Research Areas
  • Electronic technology and of the communications,
  • Electric engineers, electronic and automatic (eil)

Information
Abstract
This paper describes two state-of-the-art and portable voice-based authentication and language recognition systems. While the authentication system allows secure access to a media center at home, the language recognition system can be used as a previous step to automatically transcribe and translate the recognized text from its original language into another one. The most important advantage of the developed systems is that they can run on a low cost embedded device, such as a Raspberry Pi (RPi), and using only open-source projects, which makes it feasible to replicate or include in other systems, but also allows its implementation as part of educational projects in electronics. The developed systems have been tested on real data with very good results. Regarding the authentication system, the validation process is done in 3.3 seconds in average with an Equal Error Rate (EER) of 19% on test files with 20 seconds, and tested with up to 87 different speakers. On the other hand, the language recognition system is able to recognize up to six languages. For this system, important efforts were done in order to reduce the processing time and memory requirements while keeping high the recognition rate. The final system uses 64 Gaussians and 200 i-vectors, obtaining an average cost error rate (Cavg) of 8.6% for the six languages.
International
Si
JCR
Si
Title
Ieee Latin America Transactions
ISBN
1548-0992
Impact factor JCR
0,186
Impact info
Volume
12
Journal number
4
From page
755
To page
763
Month
SIN MES
Ranking
237/247
Participants
  • Autor: Luis Fernando D'Haro Enriquez UPM
  • Autor: Ricardo de Cordoba Herralde UPM
  • Autor: José Ignacio Rojo estudiante de cuarto curso del Grado en Ingeniería de Tecnologías y Servicios de Telecomunicación en la UPM
  • Autor: Jorge Diez García-Olalla estudiante de cuarto curso del Grado en Ingeniería de Tecnologías y Servicios de Telecomunicación en la UPM
  • Autor: Diego Avedaño estudiante de cuarto curso del Grado en Ingeniería de Tecnologías y Servicios de Telecomunicación en la UPM
  • Autor: José María Bermudo estudiante de cuarto curso del Grado en Ingeniería de Tecnologías y Servicios de Telecomunicación en la UPM

Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Tecnología del Habla
  • Departamento: Ingeniería Electrónica