This paper provides an insight into the process of developing comprehensive voice-enabled and interoperable learning services. It provides a background on the Voice Interactive Classroom, a service-oriented architecture that enables cross-platform multichannel access to Internet-based learning. Strategies and practices for designing, developing, documenting and evaluating service-oriented applications are also presented, which allow aural access to existing e-learning platforms. In addition, it’s summarise the development of four voice-enabled learning services and report the findings obtained from evaluating their usability and didactic effectiveness. This research is intended to facilitate students and practitioners with planning, implementing and evaluating their own solutions.
This research paper proposes the use of a service-oriented approach, supported by the e-learning specifications IMS Abstract Framework and The Open Knowledge Initiative, to provide a complementary audio communication channel and enable the interoperability of audio features among the various e-learning platforms and components. In addition, the use of the W3C recommendations of VoiceXML, along with the methods and techniques of adaptive educational hypermedia, allows overcoming the limitations of using unusual or non-standard languages to describe voice dialogues and better adapt the on-line learning process to innovative e-learning scenarios.
“We introduced the use of I6NET VXI* VoiceXML browser, which proved easy to install and reliable in use. VXI* can be used altogether with Asterisk and various Text to Speech and Automatic Speech Recognition solutions, including a few which provide support for the use of the Spanish language. This characteristic makes it highly convenient for our developments and an important factor to choose it in following studies” said Víctor Manuel Álvarez García, Faculty Member Assistant Professor – European Ph.D. Learning Technologies.
Authors: Víctor Manuel Álvarez García, M. Puerto Paule Ruiz, Moisés Riestra González, Juan Ramón Pérez Pérez
Publication: Concurrency and Computation
Publisher: John Wiley and Sons, copyright 2012
Date: Feb 1, 2012