Java vs. Symbian: A comparison of software-based DSR implementations on mobile phones

With increasing processing power of today´s mobile phones, a reasonable employment of Distributed Speech Recognition (DSR) Technology comes into reach. This paper presents the ETSI DSR front-end standards as software- based implementations on the two most popular mobile phone platforms: Java ME and Symbian. We present performance comparisons between the different front-end standards as well as the execution times on current mobile phones. After showing that real-time feature-extraction on current devices is possible, we furthermore point out hindrances and pitfalls during development and deployment.