Utilizing Different Voice Value to Understand Voice Assistant Users’ Enjoyment

This study aims to understand if various voice assistants’ (VAs’) voice parameters (i.e. pitch range and speech rate.) that may have effect on users’ enjoyment and preference. VAs follows various voices as Siri has five kinds of recordings in the English (American) channel. For the reason that Siri has diversified voices, this research aims to use a non-binary voice (i.e. ios 15.4, recording 5) as a sample and use AUTO-TUNE software to modify their pitch ranges and speech rates. Through a web-based survey conducted on Qualtrics, participants—recruited from Amazon Mechanical Turk (MTurk)—were asked their feelings after listening to 4 patterns, which included higher pitch range, lower pitch range, higher speech rate, and lower speech rate. I ask about their enjoyment of listening to those patterns across five different categories: motivation, goal, proof, evaluation, and potential. In a sample size of 114, this study discusses how the responses differ between the different categories and how they link to various VA voice parameters. In this study, I demonstrate that various VA voice parameters have no significant effect on users’ motivation, goals, proof, and evaluation. Users’ potential is slightly affected by the changeable voice parameters of this human-computer interaction however it is still not significant. With this study, I indicate that the pitch range and speech rate of the voice assistant, Siri iOS 15.4 recording 5, has no effect on the enjoyment of their user’s experience.