Program for calculating loudness according to DIN 45631 (ISO 532B)

Eberhard Zwicker; Hugo Fastl; Ulrich Widmann; Kenji Kurakata; Sonoko Kuwano; Seiichiro Namba

doi:10.1250/ast.12.39

Eberhard Zwicker, Hugo Fastl, Ulrich Widmann, Kenji Kurakata, Sonoko Kuwano, Seiichiro Namba

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Keywords: Loudness, Loudness level

JOURNAL FREE ACCESS

1991 Volume 12 Issue 1 Pages 39-42

DOI https://doi.org/10.1250/ast.12.39

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Abstract

The method for calculating loudness level proposed by Zwicker is standardized in ISO 532B. This is a graphical procedure and it can be tedious to calculate loudness level by this procedure. Recently, DIN 45631 has been revised including a computer program for calculating loudness level in BASIC which runs on IBM-compatible PC's. Since the NEC PC-9801 series computers are popular in Japan, the program has been modified for the NEC PC-9801 series computers and is introduced in this paper.

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