Africa ICT4D Information and Communication Technologies Voice technologies

A new “Voice Service Development Kit” by André Baart

by Anna Bon|Published December 24, 2017

Building ICTs to connect the unconnected people in e.g. rural Africa, is challenging due to the language and literacy gap. Voice-based ICT systems have proven useful, e.g. for meteo services or market information. However, in general they are much more complicated to build that text-based systems, for ICT and Web developers. To make this easier for web developers, André Baart developed a “Voice Service Development Kit” (VDSK). With this kit it is possible to deploy voice services in rural Africa, of the “Kasadaka voice service platform”, (an inexpensive, robust solution for e.g. rural contexts where there is no Internet, or when the Internet is of poor quality or extremely expensive). The VSDK has been evaluated by students of the ICT4D course at the Vrije Universiteit Amsterdam, who have developed applications for several ICT4D use-cases using the VSDK. From the evaluation is concluded that the building-block approach to voice-service development is successful in reducing the complexity and allows inexperienced users to develop simple voice-services in a short time.

André writes about his research:

“While the internet usage in the developing world is still low, the adoption of simple mobile phones is widespread. A way to offer the advantages of the internet to these populations is voice-based information systems. The KasaDaka voice-services platform is aimed at providing voice-services in the context of ICT for Development (ICT4D). The platform is based on a Raspberry Pi and a GSM modem, which enables affordable voice-service hosting, using the locally available GSM network. The platform takes into account the special requirements of the ICT4D context, such as limited internet connectivity and low literacy rates.

This research focuses on lowering the barrier to entry of voice-service development, by reducing the skill set needed to do so. A Voice Service Development Kit (VSDK) is developed that allows the development of voice-services by deploying and customizing provided building-blocks. These building blocks each represent a type of interaction that is often found in voice-services. (for example a menu, user voice input or the playback of a message) The researcher argues that the simplification of voice-service development is an essential step towards sustainable voice-services in the ICT4D context; As this increases the potential number of local voice-service developers, hremoving the dependency on foreign (and thus expensive) developers and engineers. This simplification should ideally be achieved by providing a graphical interface to voice-service development.

The VSDK was evaluated during the ICT4D course at the Vrije Universiteit Amsterdam, where students built applications for various ICT4D use-cases using the VSDK. Afterwards a survey was conducted, which provided insight on the students’ experiences with voice-service development and the VSDK. From the results of the evaluation is concluded that the building-block approach to voice-service development used in the VSDK, is successful for the development of simple voice-services. It allows newcomers to (voice-service) development, to quickly develop (simple) voice-services from a graphical interface, without requiring programming experience.

The VSDK combined with the existing KasaDaka platform provides a good solution to the hosting and development of voice-services in the ICT4D context.”

Slides of André’s presentation:

KasaDaka: a sustainable voice-service platform – Master thesis presentation André Baart from André Baart

GitHub: https://github.com/abaart/KasaDaka-VSDK

André Baart’s master thesis can be downloaded as PDF.

AUTHOR

Anna Bon

Member of the W4RA team; Centre for International Cooperation, Vrije Universiteit Amsterdam, The Netherlands.

104 posts

Visiting professor Hans Akkermans, ICT4D expert André Baart, CEO at Babafla, AI specialists Gossa Lô and Chris van Aart from Dutch tech firm Bolesian and video & media expert Leeuw van Moerkerken from Leeuw Film visit UDS for a AI/ICT4D ongoing collaboration in education and research, with UDS researchers Francis Dittoh, Gideon Ali and many others. Anna Bon represents VU Amsterdam in the ICT4D workshop, that will take place in a rural community nera Nyankpala, The team will meet the Department Head of the Computer Science Department, Dr. Barik, the Dean of Engineering Prof Seini, the Director of International Relations, Prof. Courage Setsoafia. And we will meet Prof Saa Dittoh in a writing workshop about the book about Indigenous Knowledge and the Plug-in Principle. To be continued...

30 June - 1 July - Connecting Worlds Conference at NU gebouw VU. Keynotes from Saa Dittoh and Narayanan Kulathuramayir. 7 June 2022 - start of ICT4D in the Field course. 1-8 May TMT-OKP funded W4RA Second Workshop in Koudougou, Burkina Faso, with women entrepreneurs for Regreening, marketing of non-timber forest products. W4RA and Reseau MARP. 22-28 February 2022 TMT-OKP funded W4RA workshop with AOPP in Mali, about seeds 7-12 February 2022 - TMT-OKP funded W4RA Workshop in Koudougou, Burkina Faso, with women entrepreneurs for Regreening, who produce non-timber forest products. W4RA and Reseau MARP. 9-16 November 2021 "Cyber Security in and for the Global South". An interdisciplinary seminar organized by Universitas Indonesia and VU Amsterdam. 26-27 August 2021 Academic Conference "Digital Society and Global Citizenship" location: VU (tbd) and online. 28 June 2021 Final Student Conference ICT4D in the Field - 6 projects presented on AI in and for the Global South. 2-4 June 2021 Webinar "AI in and for the gLobal South" online event with 9 AI expert lectures. 28 May 2021 Start ICT4D in the Field course. 31 March - 20 May 2021 ICT4D master course at VU. 26 March 2021 Panel Discussion DIgHum - Education and the Digital Society. 26 February 2021: Francis Dittoh presented the paper Tibaŋsim: Information Access for Low-Resource Environments at ICICT 2021 Conference. 15 December 2020 at 13h CET: Anna Bon defended her PhD thesis Intervention or Collaboration? Redesigning Information and Communication Technologies for Development in the Aula of Maastricht University. 11 December 2020: Sophie Vos and Hella Schaefers presented again at the IFIP conference the Food Security Project Sustainability and Ethics by Design. 26 November 2020: Sophie Vos and Hella Schaefers present their paper at the Amsterdam Sustainability Institute.

Although the Internet offers a wealth of information, and the World Wide Web has become today's paradigm of information and knowledge sharing on the planet, it is still inaccessible to the illiterate and to most rural communities. Moreover, most websites offering information about Africa are written in English, French, and other European languages. Few, however, contain relevant content information in local African languages. Furthermore, the Web is only accessible with an Internet connection, which most rural households do not have, relying instead on radio and mobile phones for communication. These are all important obstacles to overcome. But we believe this is possible to achieve - due to today's advanced ICT technologies and the local and international technical-scientific expertise present in the W4RA collaboration program.