Exploring the subjective response of keyboard key sounds on individuals' and susceptibility to interference and sensitivity to noise

Abstract: This study, rooted in the discipline of human factors engineering, endeavors to investigate the threshold of decibel variance in tolerable interference across diverse activity states by scrutinizing individual subjective responses to keyboard keystroke sounds. The overarching goal is to furnish a more human-centered framework for keyboard design.Study One undertakes a meticulous analysis of 321 questionnaires and 66 noise sensitivity scales, revealing a noteworthy positive correlation between individuals' susceptibility to interference and their sensitivity to noise. The broad spectrum of individuals exhibiting heightened noise sensitivity validates the generalizability of the experimental findings, thereby reinforcing the significance of the research endeavor.Study Two adopts a multifaceted approach involving a first-round controlled experiment and randomized controlled trials encompassing 52 subjects, alongside a subsequent round of scenario simulation tests involving 18 subjects. This comprehensive methodology is employed to assess the impact of varied activity states and keyboard decibel levels on individual susceptibility to interference. Data processing and statistical analysis employ advanced techniques such as fuzzy mathematics and rank-scale methods. Utilizing a stepwise estimation methodology, the study delineates the thresholds of decibel variance in interference tolerance across distinct states: 59.98 dBA for highly concentrated states, 60.79 dBA for moderately concentrated states, 62.91 dBA for lightly concentrated states, and 59.61 dBA for sleep states.Study Three further validates the findings through rigorous Ridit analysis, affirming the reliability of the data provided and positioning it as a valuable reference for pertinent domains.Furthermore, the research findings exhibit a high level of reliability and applicability. These results pave the way for further exploration of additional factors impacting keyboard design, thereby broadening the research domain and enhancing both user experience and health perception. Consequently, this study offers a solid foundation for practical design and management decisions. In conclusion, this study not only addresses theoretical gaps in relevant fields but also provides valuable reference points for keyboard design in practical applications, underscoring its promising prospects and potential for real-world impact.

Keywords: Ergonomics, subjective response, individual level of interference, keyboard key tone decibels, humanized design

DOI: 10.54941/ahfe1004815

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