Reduction of Observer Bias in Reading Speech Levels with a VU Meter
Harry N. Levitt, Peter D. Bricker · The Journal of the Acoustical Society of America · 1970
A procedure is described for reading the levels of certain types of speech sources using a VU meter with minor modifications. The method involves random sampling of the waveform, a simple decision about pointer position by the observer, and strict rules for adjusting the range attenuator. The procedure is shown to reduce interobserver variability considerably when a substantial amount of speech is available from a relatively constant source.