## 5 Conclusions  
In this paper, we designed and carried out auditory sustained attention experiments in a single-factor noise environment, a reverberant environment, and two factors of noise reverberation interference; obtained the rule of noise and reverberation time affecting auditory sustained attention; and established a perceptual prediction model. The experimental results can provide a theoretical basis for the design of indoor learning environments and basic data support for the establishment of classroom acoustic standards. The main conclusions are as follows:  
1. The impact of the noise type on auditory sustained attention perception is not significant. There was a significant difference in the influence of SNR on auditory sustained attention. In both noise conditions, OE and CE show a logarithmic decrease trend and tend to stabilize as SNRs increase, and MRT shows an exponential decay trend as SNRs increase and becomes stable when SNRs increase to a certain extent. The functional relationship between OE, CE, and MRT and SNR was obtained, and this model can be used to estimate the perceptual results when there is only noise interference. In order to achieve the best performance of sustained auditory attention of college students, the suggested SNR is greater than or equal to 18 dB;
2. In the reverberant environment, OE and MRT show a logarithmic growth trend as the RT increases, while CE shows an exponential growth trend, when there is only reverberation time interference, the obtained prediction model can be used to estimate auditory sustained attention performance. RT significantly affects the perception of OE, CE, and MRT;
3. When both noise and reverberation interfere, the SNR significantly impacts auditory sustained attention perception under all RT transmission conditions, and the smaller the SNR, the greater the negative effect. Compared with SNR, RT has a much smaller impact on auditory sustained attention perception, with a significant effect only at SNR = \(-\)5 dB. Compared to reverberation time, college students' auditory sustained attention performance is more sensitive to changes in noise. In the design of indoor acoustic environment, it is necessary to set a reasonable RT, and a higher SNR is important for better auditory attention performance of the subjects.  
Conceptualization, L.L. ([PERSON]) and Y.L.; methodology, L.L. ([PERSON]), Y.L., and L.L. ([PERSON]); software, L.L. ([PERSON]); validation, L.L. ([PERSON]); formal analysis, L.L. ([PERSON]); investigation, L.L. ([PERSON]), Y.L. and L.L. ([PERSON]); resources, L.L. ([PERSON]); data curation, L.L. ([PERSON]) and Y.L.; writing--original draft preparation, L.L. ([PERSON]); writing--review and editing, L.L. ([PERSON]) and Y.L.; visualization, L.L. ([PERSON]) and L.L. ([PERSON]); supervision, Y.L.; project administration, L.L. ([PERSON]); funding acquisition, L.L. ([PERSON]). All authors have read and agreed to the published version of the manuscript.  
**Funding:** This work has been supported by the Research Fund for Teaching Reform in Higher Education of Jiangxi Province of China (No. JXJG222023).  
**Institutional Review Board Statement:** The research was approved by the Research Ethics Committee of Communication University of China.  
**Informed Consent Statement:** Informed consent was obtained from all subjects involved in the study.  
**Data Availability Statement:** Data for this study are available from the corresponding author on request.  
**Acknowledgments:** The authors would like to thank all the college students who participated in the experiment and the reviewers and editors for their reviews of this study.  
**Conflicts of Interest:** The authors declare no conflict of interest.