Williams C E, Mosko J D, Greene J W
Aviat Space Environ Med. 1976 Feb;47(2):154-8.
High-quality tape recordings were constructed of single, double, and triple word test items from the six monosyllabic work lists of the Modified Rhyme Test (MRT), a multiple-choice intelligibility test. The test workd were incorporated in a carrier phrase somewhat analogous to typical aircraft radio messages. The recorded lists were mixed with shaped noise and played back to a group of listeners at three speech-to-noise ratios. The regular closed-response format of the MRT was utilized for all three types of test items. There was little difference in overall listener performance for the single, double, and triple word test items. Because of their more representative message length and decreased testing time, the triple word test items will be utilized in subsequent data-gathering studies directed toward the development of an efficient reliable test for assessing the ability of aircrew personnel to hear speech in their operational environments.
高质量的录音由改良押韵测试（MRT）的六个单音节词表中的单字、双字和三字测试项目组成，MRT是一种多项选择清晰度测试。测试单词被编入一个载体短语中，有点类似于典型的飞机无线电信息。录制的列表与整形噪声混合，并以三种语音噪声比播放给一组听众。MRT的常规封闭式回答格式用于所有三种类型的测试项目。单字、双字和三字测试项目在听众的总体表现上几乎没有差异。由于三字测试项目具有更具代表性的消息长度且测试时间减少，因此在后续的数据收集研究中将使用三字测试项目，以开发一种高效可靠的测试，用于评估机组人员在其操作环境中听取语音的能力。
