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1st Edition, December 1, 2012

Complete Document

A Shaped Noise File Representative of Speech

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Active, Most Current

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Product Details:

  • Revision: 1st Edition, December 1, 2012
  • Published Date: December 2012
  • Status: Active, Most Current
  • Document Language: English
  • Published By: ECMA International (ECMA)
  • Page Count: 20
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This Technical Report describes a digital shaped pink noise file representative of speech in two main characteristics, namely the spectrum and the crest factor. The spectrum is defined in third-octave band levels relative to pink noise up to the 8 kHz band, which provides a sufficient bandwidth for speech. The crest factor is defined at a 30 second time scale. The recording level of the file is not specified, and should be adjusted to match the amplitude, at the output of the headphone, of a typical audiobook or podcast when played on the device under test. This file is not meant to replace the existing file defined in EN 50332-1 for hearing safety.