This chapter discusses support measures for language disorders in the first section and for hearing impairments in the second section. Section 9.1: Human speech is not only used for verbal communication but also for a wide variety of purposes, such as singing and music expression, mimicking, sensing information from tone, and inducing laughter. They play important roles in the expression and dignity of a person and contribute significantly to facilitating human relationships. Therefore, patients who have lost their voice due to laryngectomy for laryngeal cancer or other cancers have a significant psychological impact and may tend to withdraw. In this chapter, an overview of the classification of speech disorders is first described, and then supporting technologies and approaches currently in practical use are introduced. Subsequently, the research attempted by the authors is introduced. It would be great if a viewpoint that shows a direction for future research on assistive technology for speech disorders could be shared with readers. Section 9.2: Information accessibility for deaf and hard of hearing (DHH) individuals has evolved significantly from traditional hearing aids to comprehensive digital solutions. This chapter examines contemporary approaches to information acquisition support for the DHH community, encompassing 1.5 billion people worldwide with varying degrees of hearing loss. We review three primary categories of assistive technologies: hearing enhancement devices, including hearing aids and cochlear implants with wireless transmission capabilities; real-time captioning systems utilizing speech recognition and respeak methods for live broadcasts and educational settings; and communication support applications that facilitate intercommunication between speech, text, and sign language. The chapter also explores specialized applications in educational environments and sports participation, highlighting evidence-based practices and emerging technologies. While technological advances have remarkably improved accessibility through smartphone applications and remote captioning systems, substantial challenges remain in ensuring universal access and maintaining high accuracy across diverse communication preferences. Future developments must address the heterogeneous needs of DHH communities while respecting both individual communication choices and deaf cultural values in designing inclusive information systems.