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Telephony Speech Recognition System: Challenges

IJCA Proceedings on National Conference on Communication Technologies & its impact on Next Generation Computing 2012
© 2012 by IJCA Journal
CTNGC - Number 1
Year of Publication: 2012
Joyanta Basu
Rajib Roy
Milton S. Bepari
Soma Khan

Joyanta Basu, Rajib Roy, Milton S Bepari and Soma Khan. Article: Telephony Speech Recognition System: Challenges. IJCA Proceedings on National Conference on Communication Technologies & its impact on Next Generation Computing 2012 CTNGC(1):30-36, November 2012. Full text available. BibTeX

	author = {Joyanta Basu and Rajib Roy and Milton S. Bepari and Soma Khan},
	title = {Article: Telephony Speech Recognition System: Challenges},
	journal = {IJCA Proceedings on National Conference on Communication Technologies & its impact on Next Generation Computing 2012},
	year = {2012},
	volume = {CTNGC},
	number = {1},
	pages = {30-36},
	month = {November},
	note = {Full text available}


Present paper describes the challenges to design the telephony Automatic Speech Recognition (ASR) System. Telephonic speech data are collected automatically from all geographical regions of West Bengal to cover major dialectal variations of Bangla spoken language. All incoming calls are handled by Asterisk Server i. e. Computer telephony interface (CTI). The system asks some queries and users' spoken responses are stored and transcribed manually for ASR system training. In real time scenario, the telephonic speech contains channel drop, silence or no speech event, truncated speech signal, noisy signal etc along with the desired speech event. This paper describes these kinds of challenges of telephony ASR system. And also describes some brief techniques which will handle such unwanted signals in case of telephonic speech to certain extent and able to provide almost desired speech signal for the ASR system.


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