For traditional broadcasting formats, implementation of accessible audio strategies for hard of hearing people have used a binary, intelligibility-based approach. In this approach, sounds are categorized either as speech, contributing to comprehension of content, or non-speech, which can mask the speech and reduce intelligibility. Audio accessibility solutions have therefore focused on speech enhancement type methods, for which several useful standard objective measures of quality exist. Recent developments in next-generation broadcast audio formats, in particular the roll out of object-based audio, facilitate more in-depth personalisation of the audio experience based on user preferences and needs. Recent research has demonstrated that many non-speech sounds do not strictly behave as maskers but can be critical for comprehension of the narrative for some viewers. This complex relationship between speech, non-speech audio and the viewer necessitate a more holistic approach to understanding quality of experience of accessible media. This paper reviews previous work and outlines such an approach, discussing accessibility strategies using next-generation audio formats and their implications for developing effective assessments of quality.

对于传统的广播格式，为听觉不佳的人实施的可访问音频策略已使用基于可理解性的二进制方法。在这种方法中，声音被分类为语音（有助于理解内容）或非语音（可以掩盖语音并降低清晰度）。因此，音频可访问性解决方案专注于语音增强类型的方法，为此，存在几种有用的质量标准客观度量。下一代广播音频格式的最新发展，特别是基于对象的音频的推出，促进了基于用户偏好和需求的音频体验的更深入个性化。最近的研究表明，许多非语音声音并不严格地充当掩盖者，但对于理解某些观看者的叙述而言可能至关重要。语音，非语音音频与观看者之间的这种复杂关系需要一种更全面的方法来理解可访问媒体的体验质量。本文回顾了以前的工作并概述了这种方法，讨论了使用下一代音频格式的可访问性策略及其对开发有效质量评估的意义。