Billy Odero

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We present a method to expand the number of languages covered by simple speech recognizers. Enabling speech recognition in users' primary languages greatly extends the types of mobile-phone-based applications available to people in developing regions. We describe how we expand language corpora through user-supplied speech contributions, how we quickly(More)
We describe the design, implementation, and evaluation of Tangaza, a mobile phone-based group messaging system targeted at moderately low-income users in developing regions. We focus on the design decisions that make Tangaza inexpensive and usable with even the most basic GSM mobile phone, and examine the resulting usability trade-offs. We also describe how(More)
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