Spoken Dialog System in Bodo Language for Agro Services
In this work, a cost effective spoken dialog system and a dialog manager is developed for accessing information like price, weather, and fertilizer agricultural commodity in Bodo language. For the development of SR models, we have collected data from diff
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Abstract In this work, a cost effective spoken dialog system and a dialog manager is developed for accessing information like price, weather, and fertilizer agricultural commodity in Bodo language. For the development of SR models, we have collected data from different dialect regions of BTC area, Assam using mobile phone where native language is Bodo. The target speakers are mainly farmers. Our proposed system consists of bluetooth enabled mobile for communication channel, Asterisk-based IVR module, a dialog manager, and a speech recognition module. Here, we discuss our system development, call flow design and performance evaluation of the speech recognition module. Our result indicates similar performances between 16 and 32 GMMs/state. The raw performance of the developed SDS system in terms of word recognition rate (WRR) is 83.29% in training and 79.12% in testing. Keywords Spoken dialog system Chain mobile IVR
Speech recognition Asterisk
1 Introduction There is over 80% of the population directly engaged in agricultural in BTC area of Assam where most the people are Bodo Tribe and cultivate different commodities. Although the Ministry of Agriculture, Government of India, designed some policies for the benefit of cultivators, but most of policies are internet-based. So farmers have to well verse literate to use those benefits. In BTC area of Assam we found that farmers are semi-literate and they are not able to use computer. Another A. Deka (&) M.K. Deka Department of Computer Science and Technology, Bodoland University, Kokrajhar, Assam, India e-mail: [email protected] M.K. Deka e-mail: [email protected] © Springer Nature Singapore Pte Ltd. 2018 A. Kalam et al. (eds.), Advances in Electronics, Communication and Computing, Lecture Notes in Electrical Engineering 443, https://doi.org/10.1007/978-981-10-4765-7_65
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problem with the web-based system is that it is not native language. For this problem we try to investigate other solution through which we can solve this issue. We find some of the SMS, DTMF, IVR, and web-based solution but those are not cost effective and they are not designed in Bodo language. During survey we find that, the mobile penetration throughout the world is so high that the semi literature persons also can handle the mobile phone. From technical point of view it is easy to build voiced-based telephony architecture by using automatic speech recognition system with telephone network [1, 2]. In 2010 Saurabh Goel and Mahua Bhattacharya described a method for integration of telephone network with speech over Asterisk PBX server [3]. For a small organization or research point of view we proposed and design a Bluetooth-based IVR solution for our prototype model which is very cost effective and easy to maintain. Bodo is a Sino Tibetan family language mainly spoken in Northern parts of Assam, the North Eastern state of India. It is also known as tonal language. There are 22 phonemes 16 consonant and 6 vowel phoneme [4]. The basis features of this lan
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