This paper analyzes two Auditoria at the Faculty of Engineering, Helwan University, Cairo, Egypt. Based on the clarity of speech for educational facilities. This research was carried out on adapting the field survey to determine the architectural and acoustic measurements, followed by a digital simulation using CATT for both rooms. Sustainable treatments were provided to improve the sound environment of the learning process and were again tested using CATT. Analysis and simulation indicate that both rooms suffer from poor acoustics due to the surrounding area and the finishing materials selection. One possible solution to this problem is to use a new sustainable absorbent to maximize uptake, reducing excessive reverberation time to acceptable values, increasing early reflections and eliminating shadow areas that improve speech clarity for all receivers.