Work Item
ASTM WK78426

New Practice for Measurement of Sound Pressure Level Differences and Decay Curves using the Impulse Response Method with Swept Sinusoidal Signals

1. Scope

This practice introduces the steps necessary to carry out measurements using the impulse response method with sweep signals to obtain sound pressure level differences and energy decay curves. The provided information includes the generation of the test signals, the measurement procedure and the post-processing steps to obtain the desired result. An important goal of the practice is to provide clear rules and recommendations for the measurement procedure that will enable consistent results. A verification process to ensure agreement with the established noise method is also given.


Impulse Response; Sweep


The impulse response method using sweep signals is currently not allowed by any measurement standard, despite long-established and clear evidence that it provides superior performance compared to a measurement with noise signals. Other relevant standards (e.g. E90, E336, E2235, C423) can then reference this practice.

The title and scope are in draft form and are under development within this ASTM Committee.


Developed by Subcommittee: E33.05

Committee: E33

Staff Manager: Kelly Paul

Work Item Status

Date Initiated: 09-27-2021

Technical Contact: Markus Mueller-Trapet

Item: 012

Ballot: E33 (22-03)

Status: Will Reballot Item

Item: 003

Ballot: E33.05 (22-01)

Status: Will Reballot Item