Browsing by Author "HaileMariam, Sebsibe (PhD)"
Now showing 1 - 2 of 2
Results Per Page
Sort Options
Item Multi-Lingual Market Information Interactive Voice Response System(Addis Ababa University, 2014-01) Endale, Honelet; HaileMariam, Sebsibe (PhD)In this paper, we address the issue of how to design and implement multilingual market information interactive voice response system (MMI-IVR) for the low literacy target groups. Thus, we propose a three tier multilingual market information interactive voice response (IVR) system utilizing text to speech (TTS) technology. It is especially designed to help farmers to obtain the market information they seek in a timely manner and is reliable, scalable and user-friendly operating on a 24 hour by 7 weak bases. With MMI-IVR system, farmers can obtain real time market information using just their telephone set or mobile phone via a DTMF (Dual Tone Multi-Frequency). To reduce the complexity of the system, it is decomposed into two sub systems (speech synthesis and voice interface subsystem). From the developer point of view, MMI-IVR system has three major components, user, asterisk server and MMI-IVR application. In this system user interacts by using telephone keypad with the asterisk server and then the asterisk server has dial plan which is used to define how calls flow into and out of the system. When messages are received on this channel to asterisk server, the message is sent to the MMI-IVR application for processing using Asterisk’s Application Gateway Interface (AGI). Finally, the MMI-IVR will interact with the user on the channel based on predefined IVR process tree on MMI-IVR application. In this thesis, speech synthesis and multilingual interactive voice response system are designed and implemented. Firstly, unit selection voice has been built on Festival speech synthesis framework using phrase as basic unit. Secondly multilingual IVR system is designed and implemented based on multilingual IVR tree structure. MMI-IVR is developed using PHP programming language and PHPAGI script is used to interface with PBX as software (i.e. Asterisk server). To emulate telephone X-lite soft phone is used as phone interface to communicate with MMIIVR system. Finally, evaluation of MMI-IVR and speech synthesis is conducted by involving 37 people who are speakers of each language (15 from Amharic, 13 from Afaan-Oromo and 9 from Tigrigna). MMI-IVR systems evaluation results have shown that the system provide good quality speech in terms of naturalness, is easy to navigate and functional in terms of designed menu structure, and it gives customer satisfaction. Keywords: Speech synthesis, interactive voice response system, Asterisk server, Market information, Dial plan, Asterisk Gateway Interface.Item Multi-Lingual Market Information Interactive Voice Response System(Addis Ababa University, 2014-01) Endale, Honelet; HaileMariam, Sebsibe (PhD)In this paper, we address the issue of how to design and implement multilingual market information interactive voice response system (MMI-IVR) for the low literacy target groups. Thus, we propose a three tier multilingual market information interactive voice response (IVR) system utilizing text to speech (TTS) technology. It is especially designed to help farmers to obtain the market information they seek in a timely manner and is reliable, scalable and user-friendly operating on a 24 hour by 7 weak bases. With MMI-IVR system, farmers can obtain real time market information using just their telephone set or mobile phone via a DTMF (Dual Tone Multi-Frequency). To reduce the complexity of the system, it is decomposed into two sub systems (speech synthesis and voice interface subsystem). From the developer point of view, MMI-IVR system has three major components, user, asterisk server and MMI-IVR application. In this system user interacts by using telephone keypad with the asterisk server and then the asterisk server has dial plan which is used to define how calls flow into and out of the system. When messages are received on this channel to asterisk server, the message is sent to the MMI-IVR application for processing using Asterisk’s Application Gateway Interface (AGI). Finally, the MMI-IVR will interact with the user on the channel based on predefined IVR process tree on MMI-IVR application. In this thesis, speech synthesis and multilingual interactive voice response system are designed and implemented. Firstly, unit selection voice has been built on Festival speech synthesis framework using phrase as basic unit. Secondly multilingual IVR system is designed and implemented based on multilingual IVR tree structure. MMI-IVR is developed using PHP programming language and PHPAGI script is used to interface with PBX as software (i.e. Asterisk server). To emulate telephone X-lite soft phone is used as phone interface to communicate with MMIIVR system. Finally, evaluation of MMI-IVR and speech synthesis is conducted by involving 37 people who are speakers of each language (15 from Amharic, 13 from Afaan-Oromo and 9 from Tigrigna). MMI-IVR systems evaluation results have shown that the system provide good quality speech in terms of naturalness, is easy to navigate and functional in terms of designed menu structure, and it gives customer satisfaction. Keywords: Speech synthesis, interactive voice response system, Asterisk server, Market information, Dial plan, Asterisk Gateway Interface.