與語音對話代理人（Voice Conversational Agent）互動成為日常生活中的一部分，不論是透過個人語音助理掌管日常行程或是透過語音智慧音箱控制智慧家庭中的設備，語音對話代理人以各種形式融入我們的生活之中。而普遍的語音對話代理人多以助理般的角色定位融入我們的生活之中，以協助使用者為主要功能和目標。然而在未來設計具有語音對話代理人的智慧裝置時，依照裝置的功能和目的差異，語音對話代理人的角色會更為多元與複雜，因此本研究將深入探討語音對話代理人角色的設計與發展。
為擴展對語音對話代理人的想像，本研究以科幻電影為研究素材，整理與分析科幻電影中的語音對話代理人角色以及相關之情境片段，探索語音對話代理人可能有的各種角色表現。進而提出使用語音對話代理人之推測角色矩陣圖的設計方法，作為設計師於設計語音對話代理人的人物模型（Persona）過程時的輔助工具。本研究透過舉辦設計工作坊的形式將推測角色應用於設計具有設計語音對話代理人的日常物件設計過程之中，以該方式探索推測角色的應用情境與可能性。最後本研究也整理出六項對語音對話代理人的設計面向。
本研究所提之語音對話代理人的推測角色，是指在創立語音對話代理的人物模型時所賦予之形象表現。

Interacting with Voice Conversational Agent (VCA) becomes a part of our daily life,
whether it is through personal voice assistants to manage our daily schedules or through voice smart speakers to control devices in smart homes, voice conversation agents are integrated into our life. The common VCA are mostly integrated into our lives as an assistant to assist users to finish doing something or help us to search for information. However, when designing a smart device with a VCA in the future, the role of the VCA will be more diverse and complex according to the different functions and purposes. Therefore, this study discusses the design and development of the roles of the VCAs.
To expand the imagination of VCAs, this study first uses science fiction movies as
research materials, organizes and analyzes various VCAs and related clips in the movies, and explores the possible performance of VCAs. Furthermore, we propose a design method — using the voice conversational agent speculative role matrix as an ancillary tool for designers in the process of designing the persona of the VCAs. This study applies VCAs’ speculative role to the design process of everyday objects and explores the scenarios and possibilities of VCAs’ speculative roles through the design workshop. Besides, this study sorted out six design directions for designing voice conversational agents.
The speculative role in this study refers to the image performance given when creating the character model of the voice conversational agent, which is presented by the overall behavior and personality of the voice conversational agent.

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