Edgerton B J, Beattie R C, Helmerich L F
Ear Hear. 1982 Sep-Oct;3(5):280-3. doi: 10.1097/00003446-198209000-00009.
The relationship between the calibration tone and speech volume unit (VU) levels for nine commercially recorded speech tests was studied. Two procedures were used. In procedure 1, experienced clinicians reported observations of four different audiometer VU meters responding to six commercially available speech tests. Differences in magnitude estimates among judges were usually about 1 dB or less. Peak VU level deviations from the zeroed calibration tone were within +/- 1.5 VU except for the Fulton Lewis Jr. recording, which varied by about -4.8 VU. In procedure 2, a video system was used to recorded precisely VU meter responses to clinical speech materials. Differences between the calibration tones and speech levels were similar to those obtained using multiple observers. Statistically significant (p less than or equal to 0.01) differences were found between the speech levels of the commercial test recordings.
研究了九种商业录制的言语测试中校准音与言语音量单位（VU）水平之间的关系。使用了两种方法。在方法1中，经验丰富的临床医生报告了四个不同听力计VU表对六种市售言语测试的反应观察结果。评判者之间的量级估计差异通常约为1 dB或更小。除了小富尔顿·刘易斯的录音，其变化约为-4.8 VU外，峰值VU水平与归零校准音的偏差在+/- 1.5 VU范围内。在方法2中，使用视频系统精确记录VU表对临床言语材料的反应。校准音与言语水平之间的差异与使用多名观察者获得的差异相似。在商业测试录音的言语水平之间发现了具有统计学意义（p≤0.01）的差异。
