European Union Agency for Railways

Acoustic roughness spectrum

Amplitude of the acoustic roughness expressed as a function of the wavelength λ. Note 1 to entry: Acoustic roughness spectrum is expressed in μm and usually presented in terms of acoustic roughness level in dB re 1 μm.
Document
ISO
Context
International Standard
Origin document

ISO 3095:2013(en) Acoustics — Railway applications — Measurement of noise emitted by railbound vehicles

Reference Link
https://www.iso.org/obp/ui/en/
Release