1991•Journal of the Acoustical Society of Japan (E)Open access

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

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

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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Key concepts: Loudness, Computer science, IBM, IBM PC compatible, Computer program, Speech recognition, Programming language, Software