People with disabilities that affect their speech, often use speech-generating devices (SGD), commonly referred to as Augmentative and Alternative Communication (AAC) technology. This technology enables practical conversation; however, there has been a growing interest in extending AAC to support more expressive forms of conversation such as humor. In this paper, we study how to extend AAC technology to support a subset of humorous expression: delivering timely humorous comments -- witty remarks -- through AI-powered interfaces. We conducted seven qualitative interviews with AAC users and performed thematic analysis to gain in-depth insights about their experiences and challenges with AAC technology, and the role humor plays for them. We developed four simple AI-powered interfaces designed to support users in creating timely humorous comments during real-time conversations. Through a user study with five AAC users, we explored how to effectively support the delivery of well-timed humorous remarks. We conclude with a discussion of recommendations for interface design based on both studies.

翻译：患有影响言语功能的残障人士常使用语音生成设备，通常称为增强与替代沟通技术。该技术虽能实现实用性对话，但学界日益关注如何扩展AAC以支持更具表现力的对话形式，例如幽默表达。本文研究如何扩展AAC技术以支持特定幽默表达形式：通过AI驱动界面实现适时的幽默评论——即机智妙语。我们通过对七名AAC使用者进行质性访谈并开展主题分析，深入探究其使用AAC技术的体验与挑战，以及幽默在他们生活中扮演的角色。我们开发了四种简易的AI驱动界面，旨在帮助使用者在实时对话中创作适时幽默评论。通过对五名AAC使用者的用户研究，我们探索了如何有效支持适时幽默表达的传递。最后结合两项研究结果，提出了界面设计建议的讨论。