ANSI S1.43-1997 (2007) PDF

Full title and description

ANSI S1.43-1997 (R2007) — Specifications for Integrating‑Averaging Sound Level Meters. This American National Standard defines performance and design characteristics for integrating‑averaging sound level meters used to measure frequency‑weighted and time‑average sound pressure levels (and optionally sound exposure) for steady, intermittent, fluctuating and impulsive sounds.

Abstract

Provides specifications and verification procedures for instruments that perform integrating and averaging measurements of sound level. The standard complements the broader Specification for Sound Level Meters and adds requirements necessary to measure time‑average sound pressure levels, including requirements for frequency weighting, time‑averaging, overload indication, environmental sensitivity, calibration/verification and interfacing with auxiliary equipment.

General information

• Status: Historical / superseded (reaffirmed 2007; later replaced by newer ANSI/ASA S1.4 publications).
• Publication date: Original publication 1997 (ANSI/ASA S1.43 — June 12, 1997); reaffirmation noted in 2007 (R2007).
• Publisher: Acoustical Society of America (ASA) as the sponsoring body for the ANSI adoption.
• ICS / categories: Acoustics and acoustic measurements — ICS 17.140 (acoustics / acoustic measurements).
• Edition / version: ANSI S1.43 — 1997 edition, reaffirmed (R2007). Often referenced as ANSI S1.43-1997 (R2007).
• Number of pages: Approximately 30 pages (typical published length reported by standards catalogues).

Scope

Specifies performance, design and verification requirements for integrating‑averaging sound level meters intended to measure frequency‑weighted and time‑average sound pressure levels and, optionally, sound exposure. The scope covers instrument characteristics (frequency weighting, time‑averaging behavior, dynamic range and overload handling), environmental sensitivities, calibration/verification procedures, provisions for auxiliary equipment and required rating/operating information. The standard is intended to ensure reproducible, representative measurements for a range of sound types including steady, intermittent, fluctuating and impulsive sources.

Key topics and requirements

• Definitions and normative references for integrating‑averaging measurements.
• General instrument characteristics and performance criteria (sensitivity, linearity, dynamic range).
• Frequency weighting network requirements and amplifier/filter characteristics.
• Time‑averaging and indicator behavior, including response to steady, fluctuating and impulsive sounds.
• Overload indication, environmental (temperature/humidity) sensitivity and mechanical/electrical robustness.
• Calibration and verification procedures for the basic characteristics and recommended checks.
• Interfaces and provisions for auxiliary equipment, and required rating/operating information in manuals.

Typical use and users

Used by manufacturers and designers of sound level meters, acoustical and environmental consultants, occupational hygienists and regulators for selecting, specifying and verifying instruments intended for time‑averaged and integrating sound measurements in environmental noise assessment, workplace noise surveys, product noise testing and research. The standard provides criteria for instrument selection, performance verification and documentation.

Related standards

Closely related to other S1 series acoustics standards, notably ANSI S1.4 (Specification for Sound Level Meters) and other ASA/ANSI publications on calibrators, dosimeters and weighting networks. ANSI S1.43-1997 was later superseded by revisions incorporated into the ANSI/ASA S1.4 (2014) parts that updated sound level meter specifications and testing procedures.

Keywords

integrating‑averaging, sound level meter, time‑average, sound exposure, frequency weighting, A‑weighting, instrumentation, calibration, acoustics, measurement specifications.

FAQ

Q: What is this standard?

A: ANSI S1.43-1997 (R2007) is the American National Standard that specifies performance and verification requirements for integrating‑averaging sound level meters — instruments that measure time‑averaged and integrating sound levels.

Q: What does it cover?

A: It covers instrument characteristics (frequency weighting, time‑averaging behavior, dynamic range, overload indication), environmental sensitivities, calibration/verification procedures, interface provisions and required documentation and ratings for integrating‑averaging sound level meters.

Q: Who typically uses it?

A: Manufacturers of sound level meters, acoustical and environmental consultants, occupational health professionals, test laboratories and regulatory agencies that require standardized, reproducible integrating/averaging sound measurements.

Q: Is it current or superseded?

A: The 1997 edition was reaffirmed in 2007 (R2007) but is considered historical/superseded by later consolidated/updated ANSI/ASA sound level meter standards (notably the S1.4 2014 reorganized parts). Users should consult the current ANSI/ASA S1.4 series and related ASA publications for up‑to‑date specifications and testing procedures.

Q: Is it part of a series?

A: Yes — it is part of the ANSI/ASA S1 series of acoustical measurement standards and is intended to work alongside other S1 standards (for sound level meters, calibrators, dosimeters, weighting networks, etc.).

Q: What are the key keywords?

A: Integrating‑averaging, sound level meter, time‑average sound pressure level, sound exposure, frequency weighting, calibration, acoustical instrumentation.