STUDY GROUP 12 - CONTRIBUTION 288 Source: Audience Title: P.ONRA Contribution - Additional results from a candidate algorithm
Scott Isabelle · 2012
There is a need in the industry for an accurate objective predictor of the performance of highperformance noise suppressors, standardized at ITU-T in the P.ONRA initiative. This contribution describes additional work extending an approach introduced in COM 12 – C 184 intended to predict SIG, BAK, and OVRL scores (SMOS_LQO, NMOS_LQO, and GMOS_LQO, respectively) obtained using the ITU-T P.835 methodology. These extensions include accommodation of non-stationary distracters and different noise suppressor strategies. Preliminary work on validation is presented. Further work is needed to extend the algorithm to explicitly handle voice processing apart from noise suppression such as speech codecs and time-varying dynamic range compression. Also, as this current version was developed based on narrowband data, further work is needed to collect wideband data and extend the algorithm accordingly.