Foreword

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This document was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 1, Noise.

This second edition cancels and replaces the first edition (ISO 13472-2:2010), which has been technically revised.

The main changes are as follows:

— mandatory choice of the transfer function formulation and quality requirements for the coherence function;
— an alternative microphone arrangement and application of alternating transfer functions are presented to cancel the distortion due to destructive interference at the microphone positions.

A list of all parts in the ISO 13472 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A complete listing of these bodies can be found at www.iso.org/members.html.