ISO 226:2023

Current Revision
Acoustics - Normal equal-loudness-level contours

Best Price Guarantee Mar 1, 2023 English 1 Pages

Sub Total (1 Item(s)) $ 0.00
Estimated Shipping $ 0.00
Total (Pre-Tax) $ 0.00

You own the digital copy of this edition

View in Library
or
International Organization for Standardization Logo

ISO 226:2023

Acoustics - Normal equal-loudness-level contours

PUBLISH DATE 2023
ISO 226:2023

This document specifies combinations of sound pressure levels and frequencies of pure continuous tones which are perceived as equally loud by human listeners.

The specifications are based on the following conditions:

  • a) the sound field in the absence of the listener consists of a free progressive plane wave;
  • b) the source of sound is directly in front of the listener;
  • c) the sound signals are pure tones;
  • d) the sound pressure level is measured at the position where the centre of the listener's head would be, but in the absence of the listener;
  • e) listening is binaural;
  • f) the listeners are otologically normal persons in the age range from 18 years to 25 years inclusive.

The data are given in graphical form in AnnexΒ A and in numerical form in AnnexΒ B for the preferred frequencies in the one-third-octave series from 20Β Hz to 12Β 500Β Hz, inclusive, in accordance with ISO 266.

Loading...

Failed to load document history.

Publish Date Document Id Type View