WTIMIT: The TIMIT Speech Corpus Transmitted Over The 3G AMR Wideband Mobile Network

Due to upcoming mobile telephony services with higher speech quality, a wideband (50 Hz to 7 kHz) mobile telephony derivative of TIMIT has been recorded called WTIMIT. It allows a wide range of scientific investigations, e. g., on speech quality and intelligibility, but also on possible wideband upgrades of network-side interactive voice response (IVR) systems with retrained or bandwidth-extended acoustic models for automatic speech recognition (ASR). Over a wideband speech telephony system, network-side speech recognition could allow applications, such as remote dictation or spelling, which in the past could be deployed in mobile telephony services only under the distributed speech recognition paradigm. The WTIMIT corpus was transmitted via two prepared Nokia 6220 mobile phones over T-Mobile's 3G wideband mobile network in The Hague, The Netherlands, employing the Adaptive Multirate Wideband (AMR-WB) speech codec. The paper presents observations of transmission effects and phone...

• Type: Conference
• Year: 2010
• Where: LREC
• Authors: Patrick Bauer, David Scheler, Tim Fingscheidt
• Keywords: Education, LREC 2010, Mobile Telephony, Wideband, Wideband Telephony