ASTM E1573-22 PDF

Overview

ASTM E1573-22: Standard Test Method for Measurement and Reporting of Masking Sound Levels Using A-Weighted and One-Third-Octave-Band Sound Pressure Levels specifies procedures for accurately measuring and reporting masking sound in various environments. This standard focuses on ensuring that the shape and level of masking sound spectra meet required specifications, supporting optimal speech privacy and acoustic performance-especially in office and workplace settings.

Adhering to ASTM E1573-22 helps facility managers, acoustical consultants, and building owners verify if installed sound masking systems conform to specified design criteria. The results are essential for maintaining consistent sound levels, minimizing distractions, and supporting productive, private work environments.

Key Topics

• Masking Sound Measurement: Provides procedures to measure masking sound with both A-weighted and one-third-octave-band sound pressure levels.
• Representative Sampling: Advises on correct measurement locations and quantities for both open-plan and enclosed office spaces, ensuring comprehensive coverage.
• Microphone Positioning: Outlines guidelines for microphone height, distance from reflective surfaces, and sweep methodology to achieve reliable readings.
• Test Signal Options: Allows measurement of:
  • Combined sound masking and HVAC system noise
  • Sound masking system alone
  • HVAC system alone
• Instrumentation Requirements: Calls for measurement devices compliant with international standards (IEC 61672-1 and IEC 61260-1).
• Reporting Requirements: Details the necessary information for reporting, including instrument details, measurement locations, test conditions, and comparison of measured results with specifications.
• Precision and Bias: Notes reproducibility parameters within controlled office environments and emphasizes unbiased, method-defined measurement values.

Applications

Implementing ASTM E1573-22 delivers practical value in a range of settings where sound masking is critical:

• Open and Closed Offices: Confirms the even distribution and compliance of masking sound levels, supporting productivity and speech privacy.
• New Office Fit-Outs: Ensures that installed sound masking or HVAC systems meet acoustic criteria before occupancy.
• Occupant Complaint Investigations: Provides a standardized method for assessing claims regarding noisy or insufficiently masked environments.
• Sound Masking Commissioning: Validates system performance during installation or after reconfiguration of office layouts and furnishings.

Key benefits include:

• Improved speech privacy and reduced distraction in open plan and private offices
• Reliable data to inform acoustic adjustments or system recalibration
• Standardized reporting for compliance and documentation

Related Standards

ASTM E1573-22 aligns with and references several important standards:

• ASTM E1374: Guide for Office Acoustics and Applicable ASTM Standards-offering broader guidance on office acoustical environments.
• ASTM C634: Terminology Relating to Building and Environmental Acoustics-providing consistency in acoustical language and definitions.
• IEC 61672-1: Electroacoustics - Sound level meters-specifying the performance requirements for sound level measurement equipment.
• IEC 61260-1: Electroacoustics - Octave-band and fractional-octave-band filters-ensuring the accuracy of equipment used for frequency band measurements.

Staying up to date with these standards ensures compatibility, regulatory compliance, and accurate measurement and reporting practices within the field of building acoustics.

Keywords: ASTM E1573-22, masking sound level measurement, A-weighted sound, one-third-octave-band sound pressure, sound masking system, office acoustics, speech privacy, acoustical testing, open offices, building standards.