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Room Synthesis Essay

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In order to get a better understanding how different were acoustical changes among the classroom soundscapes, sound quality was calculated using Zwicker's method [39-40]. The characteristics of the sound environments differed significantly among the rooms. In terms of the sound strength, The Room 7 & 4 had the higher values of LAeq and loudness while the Room 5 & 1 had the lower values of LAeq and loudness. The perceived sound in Room 7 contained relatively high SPL at high frequencies while Room 6 was dominated by low-frequency sounds among the rooms. Selected admissible values for the speech transmission index STI in selected classrooms had been shown in Table. Speech transmission index (STI) was a well-established objective method for prediction …show more content…

The following variables were used for the evaluation: (a) “Comfort/Discomfort”, “Eventful/Uneventful”, “Natural/Artificial”, “Exciting/Monotonous”, “Calm/Chaotic”, and “Satisfy/Dissatisfy”. Results show that between “Calm/Chaotic” and “Satisfy/Dissatisfy”, there was a significant positive correlation (R2=0.701, p< 0.01). It was also found that Satisfaction scores were highly correlated Jeon with acoustic indicators. STI was positively correlated with motivation in learning. Above Table shows the correlation coefficients between the physical acoustic indicators and the subjective individual responses. It was also interesting to note the relation between the above mentioned variables and one of the physical parameters, LAeq. Considering all the tested acoustic metrics, LAeq had the negative correlation coefficients with the above mentioned individual perceptual response “Comfort/Discomfort” (R2= -0.362, p1<.001). No correlation was not found between the physical acoustical parameters, “Eventfulness” as well as “Exciting/Monotonous”. Considering all the tested acoustic metrics, Loudness had the highest correlation coefficients with the above mentioned individual perceptual

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