ASTM E1179-11 - 1.11.2011
 
1. Scope

1.1 This specification states the requirements for sound sources used for measuring the speech privacy between open offices or for measuring the laboratory performance of acoustical components (see Test Methods E 1111 and E 1130).

1.2 The sound source shall be a loudspeaker located in an enclosure driven with an appropriate test signal.

1.3 This specification describes the sound source and method of qualifying it using a special qualification signal. Test signals required by open office test methods may differ.

 
2. Referenced Documents

S1.6

Preferred Frequencies, Frequency Levels, and Band Numbers for Acoustical Measurements

61672–1

Electroacoustics--Sound Level Meters--Part 1: Specifications

S1.11

Specification for Octave Band and Fractional OB Analog and Digital Filters

C634-22

Standard Terminology Relating to Building and Environmental Acoustics

61260

Electroacoustics--Octave and fractional-octave band filters

E1050-19

Standard Test Method for Impedance and Absorption of Acoustical Materials Using a Tube, Two Microphones and a Digital Frequency Analysis System

E1111-07

Standard Test Method for Measuring the Interzone Attenuation of Open Office Components

E1130-16(2021)

Standard Test Method for Objective Measurement of Speech Privacy in Open Plan Spaces Using Articulation Index

C384-04(2022)

Standard Test Method for Impedance and Absorption of Acoustical Materials by Impedance Tube Method

S1.43

Specifications for Integrating-Averaging Sound Level Meters

S1.4

Specification for Sound Level Meters