Signals and Telecommunication Journal Kalpit Bakal, Pushkar Vaidya 10 1 2021 https://doi.org/10.6025/stj/2021/10/1/15-22 https://www.dline.info/stj/fulltext/v10n1/stjv10n1_3.pdf We studied the estimation of speech intelligibility for room reverberation for which we deployed experimentation. With the use of MOS text and test sentence application from SMST base we did the estimation of subjective intelligibility. We have presented the results extensively. Further we compare the intelligibility analysis. This process measured the degradation level of the speech intelligibility with reverberation effect.