Software defined radio for audio signal processing in project based learning

Samijayani, Octarina Nur and Astharini, Dwi and Syahriar, Ary (2015) Software defined radio for audio signal processing in project based learning. Journal of Mobile Multimedia, 11 (3-4). pp. 313-320. ISSN 1550-4654

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Abstract

In communication and signal processing course there are some challenges in explaining the basic theory of signal and how to process the signal as well. Educational tool to demonstrate how the system works is important and more attractive to improve the understanding of student. Software Defined Radio (SDR) brings the concept of software-based processing. This paper implements the using of SDR as the innovative teaching method to demonstrate the fundamental concept in signal processing course. Students build the audio signal processing projects on SDR platform using GNU Radio. Three interesting projects including the adjustment of sampling rate, DSB-AM modulation, and audio processing for gender identification are simulated using GNU Radio software. This Project Based Learning shows the positive result of the implementation of SDR in raising the student interest and motivation. Furthermore this study opens wide application of SDR based technique especially for education.

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