RT Journal Article
T1 Design of an embedded speech-centric interface for applications in handheld terminals
A1 Gallardo Antolín, Ascensión
A1 García Moral, Ana Isabel
A1 Pereiro Estevan, Yago
A1 Díaz de María, Fernando
AB The embedded speech-centric interface for handheld wireless devices has been implemented on a commercially available PDA as a part of an application that allows real-time access to stock prices through GPRS. In this article, we have focused mainly in the optimization of the ASR subsystem for minimizing the use of the handheld computational resources. This optimization has been accomplished through the fixed-point implementation of all the algorithms involved in the ASR subsystem and the use of PCA to reduce the feature vector dimensionality. The influence of several parameters, such as the Qn resolution in the fixed-point implementation and the number of PCA components retained, have been studied and evaluated in the ASR subsystem, obtaining word recognition rates of around 96% for the best configuration. Finally, a field evaluation of the system has been performed showing that our design of the speech centric interface achieved good results in a real-life scenario.
PB IEEE
SN 0885-8985
YR 2013
FD 2013-02
LK https://hdl.handle.net/10016/32895
UL https://hdl.handle.net/10016/32895
LA eng
NO This work was supported in part by the Spanish Government grants TSI-020110-2009-103, IPT-120000-2010-24, and TEC2011-26807 and the Spanish Regional grant CCG08-UC3M/TIC-4457.
DS e-Archivo
RD 1 sept. 2024