1 / 6

Speech Technology R&D in Pakistan

Speech Technology R&D in Pakistan. Sarmad Hussain Center for Language Engineering Al-Khawarizmi Institute of Computer Sciences University of Engineering and Technology, Lahore, Pakistan www.cle.org.pk. Overview. 66+ languages in Pakistan

gale
Download Presentation

Speech Technology R&D in Pakistan

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Speech Technology R&D in Pakistan Sarmad Hussain Center for Language Engineering Al-Khawarizmi Institute of Computer Sciences University of Engineering and Technology, Lahore, Pakistan www.cle.org.pk OCOCOSDA 2010, Kathmandu, Nepal

  2. Overview • 66+ languages in Pakistan • Indo-Aryan, Indo-Iranian, Sino-Tibetan and Dravidian language families • ~40 have a writing system • Mostly Nastalique style of Arabic script • Others: Tibetan, Gujrati, Gurmukhi and Latin • This presentation • Text Corpora • Speech Corpora • R&D in ASR and TTS • Conclusions and Future Directions OCOCOSDA 2010, Kathmandu, Nepal

  3. Text Corpora • EMILLE Corpus (2003) (ELRA W0037 &W0038) (http://www.emille.lancs.ac.uk/manual.pdf) • Urdu text (1,640k words) • 200k parallel to English and other South Asian languages • Transcribed spoken data (512k words) • Automatically POS tagged with morphologically rich tagset (http://www.lancs.ac.uk/fass/projects/corpus/emille/U1tagset.htm) • CRULP Corpus (unreleased; Ijaz & Hussain, 2007) • Urdu text (18,000K words) • Online news, balanced across domains • Manually POS tagged with syntactic tagset (100k words) • PAN Localization Corpus (2009; availabe at www.cle.org.pk) • Urdu translation from Penn Treebank (150k words) • Manually POS tagged with syntactic tagset • Parallel to other Asian languages, translated in the project • Sindhi language Corpus (CLT10) • 4.1 Million words from online sources • No annotation OCOCOSDA 2010, Kathmandu, Nepal

  4. Speech Corpora • ARL Urdu Speech Database (2007) (http://www.ldc.upenn.edu/Catalog/CatalogEntry.jsp?catalogId=LDC2007S03) • 200 speakers from across Pakistan • 400 utterances each • Transcribed in Urdu • CRULP HEC Corpus (2010; open content license; presented at this conference) • 80 speakers (40 male, 40 female), Lahore suburban dialect • 47 hours (31 spontaneous, 16 read) • Greedily developed sentences for phonetic coverage • Ages betwee 20-45 • Transcribed in Urdu and IPA OCOCOSDA 2010, Kathmandu, Nepal

  5. TTS and ASR Research • TTS (2003-2006) • Supported through E-Govt. Directorate, MoIT • Indigenous system developed, based on CELP • Rule based complete NLP engine • Diphone synthesis, based on non-sense speech (5000 diphones) • Limited work on intonation • Released open source • ASR (presented at this conference) • Supported through HEC/USAID grant • Sphinx based system • High error rate as based on 40 hours of speech • ASR (at www.cle.org.pk) • Data collection and parameter tweaking in progress OCOCOSDA 2010, Kathmandu, Nepal

  6. Conclusions and Future Directions • Need to include speech processing coursework in curricula at graduate level • More funding needed in the areas of TTS and ASR, especially to develop linguistic resources needed to develop such systems • Annotated data for unit selection based TTS • Transcribed data for ASR • Need international collaboration for improving quality • Need linguistic resources and work on other Pakistani languages, as most work so far on Urdu OCOCOSDA 2010, Kathmandu, Nepal

More Related