Inactive-Withdrawn Standard

IEEE 152-1953

IEEE Recommended Practice for Volume Measurements of Electric Speech and Program Waves

These standards apply to the methods of and a device for measuring the dynamic magnitude of complex audio-frequency electrical waves such as occur in speech and music. The measurement of the complex and non periodic waves encountered in electrical communication cannot be expressed in simple fashion in the ordinary electrical terms of current, voltage, and power. The concept of "volume" furnishes a practical method of great utility to the communications engineer for assigning a numerical value to the magnitude of electrical speech and program waves. Volumes are read by noting the more extreme meter deflections of a device known as a volume indicator. Since the response of the meter of such an instrument to the rapidly varying waves is greatly dependent upon its dynamic characteristics, a standard for volume measurements must, therefore, include a specification of these characteristics. This standard uses the term "vu" to express volume in terms of vu above or below a specified reference level, defined herein.

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IEEE Broadcast Technology Society
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