A Comparison of Soft-Feature Distributed Speech Recognition with Candidate Codecs for Speech Enabled Mobile Services
Valentin Ion, Reinhold Haeb‐Umbach · 2006
In this paper we present a comparison of the recently proposed soft-feature distributed speech recognition (SFDSR) with the two evaluated candidate codecs for speech enabled services over wireless networks: adaptive multirate codec (AMR) and the ETSI extended advanced front-end for distributed speech recognition (XAFE). It is shown that SFDSR achieves the best recognition performance on a simulated GSM transmission, followed by XAFE and AMR. We also present some new results concerning SFDSR which demonstrate the versatility of the approach. Further, a simple method is introduced which considerably reduces the computational effort.