Authors

• Zahra Mahmoodzadeh ¹
• Mohammad Bahrani ²

¹ Faculty of Science and Technology Research Institute of Iran

² Faculty of Linguistics, Sharif University of Technology

Abstract

      A Case Study of Phonetic Reduction in Persian Telephonic Numerals     Zahra Mahmoodzade [1]   Mohammad Bahrani [2]       Received: 2011/09/06   Accepted: 2012/07/09       Abstract   Phonetic reduction is consistently considered as a challenge for speech recognition systems. Among them is the reduction of Persian telephonic numerals /do-noh/(2-9), /haft-haʃt/ (7-8) and /se-sefr/ (3-0). The acoustic analysis of the telephonic signals /se-sefr/ shows that the deletion of /r/ diminishes the phonological distinctions between [se-sef] pairs, however the phonetic cues in particularly vowel /e/ including vowel duration, F2 and F3 locus equations can still transmit this phonological contrast. Word recognition systems can recover the reduced forms by implementing these acoustic cues.     Keywords : reduction, acoustic analysis, phonetic cue, telephonic speech, speech recognition.   [1] Assistant professor, Iranian Research Institute for Information Science and Technology (IRANDOC). mahmoodzadeh@irandoc.ac.ir   [2] Assistant professor, Sharif University of Technology. bahrani@ce.sharif.edu

Keywords

• reduction
• acoustic analysis
• phonetic cue
• telephonic speech
• speech recognition