Title: RECOGNITION EXPERIMENTS WITH THE SPEECHDAT-CAR AURORA SPANISH DATABASE USING 8KHZ- AND 16KHZ-SAMPLED SIGNALS

Authors: Climent Nadeu, Marta Tolos

Abstract: Like the other SpeechDat-Car databases, the Spanish one has been collected using a 16kHz sampling frequency, and several microphone positions and environmental noises. In this work, we aim at clarify whether there is any advantage in terms of recognition performance by processing the 16kHz-sampled signals instead of the usual 8kHz-sampled ones. Recognition tests have been carried out within the Aurora experimental framework, which includes signals from both a close-talking microphone and a distant microphone. Our preliminary results indicate that it is possible to get a performance improvement from the increased bandwidth in the noisy car environment.

a01cn038.ps a01cn038.pdf