ANSI ASA S1.11-2016 part 2 PDF

Full title and description

ANSI/ASA S1.11-2016/IEC 61260-2:2016 — Electroacoustics: Octave‑band and Fractional‑octave‑band Filters — Part 2: Pattern‑evaluation tests. This part gives the test procedures and pattern‑evaluation methods laboratories and manufacturers use to verify that octave and fractional‑octave filter implementations meet the mandatory specifications given in Part 1.

Abstract

Part 2 of S1.11/IEC 61260 defines the pattern‑evaluation tests required to demonstrate conformance of octave‑band and fractional‑octave‑band filters (digital or analog) to the specifications in Part 1 (IEC 61260‑1:2014). It describes test signals, measurement set‑ups, pass/fail criteria, and procedures for both class 1 and class 2 bandpass filters so that different laboratories obtain consistent, repeatable results.

General information

• Status: Current (ANSI/ASA adoption of IEC 61260‑2:2016; listed with reaffirmation status R2024 in ASA catalog).
• Publication date: 23 March 2016 (IEC publication date for IEC 61260‑2:2016).
• Publisher: Acoustical Society of America / American National Standards Institute (adoption) and International Electrotechnical Commission (IEC) as IEC 61260‑2:2016.
• ICS / categories: 17.140.50 (Electroacoustics / metrology and measurement).
• Edition / version: Edition 1.0 (2016).
• Number of pages: 49 pages (IEC consolidated edition).

Scope

This standard specifies the pattern‑evaluation tests and test methods used to verify that octave‑band and fractional‑octave‑band filters conform to the mandatory performance limits set out in Part 1 (IEC 61260‑1:2014). It applies to both analog and digital filter implementations and covers tests appropriate for class 1 and class 2 bandpass filters, including measurement set‑ups, required test signals, measurement bandwidths, and acceptance criteria intended to ensure consistent inter‑laboratory results.

Key topics and requirements

• Definitions of pattern‑evaluation tests for octave and fractional‑octave filters (what to measure and how to record results).
• Test signal specifications and recommended measurement set‑ups (sine, swept‑sine, and special test signals used for response mapping).
• Passband and stopband performance metrics: centre‑frequency accuracy, bandwidth, ripple, skirt attenuation and out‑of‑band rejection requirements.
• Class 1 and Class 2 test procedures and differing acceptance criteria for the two accuracy classes.
• Procedures for reporting results and for comparing measured responses against the limits defined in Part 1.
• Guidance to ensure repeatability across laboratories (calibration, environmental considerations, and equipment requirements).

Typical use and users

Used by acoustical test laboratories, manufacturers of sound level meters and analysers, instrumentation designers, conformity assessment bodies, and researchers. Typical applications include type‑approval testing, product development and verification, calibration and metrology, and inter‑laboratory comparisons where consistent, repeatable filter performance measurements are required.

Related standards

Directly related to and intended to be used with ANSI/ASA S1.11‑2014 / IEC 61260‑1:2014 (Part 1 — specifications for octave and fractional‑octave filters) and S1.11‑2016 / IEC 61260‑3:2016 (Part 3 — periodic tests). The consolidated IEC publication and its amendment(s) (IEC 61260‑2:2016 with AMD1:2017) provide the authoritative international text that this ANSI/ASA adoption tracks.

Keywords

Octave‑band filters; Fractional‑octave filters; Filter pattern evaluation; Electroacoustics; IEC 61260; ANSI/ASA S1.11; Class 1; Class 2; Test procedures; Filter performance.

FAQ

Q: What is this standard?

A: ANSI/ASA S1.11‑2016 Part 2 is the American adoption of IEC 61260‑2:2016 and defines pattern‑evaluation tests for octave and fractional‑octave band filters used in acoustical instruments and analysers.

Q: What does it cover?

A: It covers the test methods, test signals, measurement setups and acceptance criteria required to demonstrate that a filter implementation meets the mandatory specifications given in Part 1 (IEC 61260‑1:2014). It is applicable to both analog and digital filters and to class 1 and class 2 bandpass filters.

Q: Who typically uses it?

A: Manufacturers of sound level meters and spectrum analysers, calibration and test laboratories, certification bodies and metrology institutes, and researchers in acoustics and audio engineering.

Q: Is it current or superseded?

A: The IEC 61260‑2:2016 text is the first edition (2016) and has an amendment (AMD1:2017). The ANSI/ASA adoption appears in ASA listings and is recorded with reaffirmation status in ASA catalog entries (R2024). Users should check the ASA/ANSI catalog or IEC Webstore for any later amendments or revisions before use.

Q: Is it part of a series?

A: Yes — S1.11 / IEC 61260 is a multipart standard: Part 1 (specifications, IEC 61260‑1:2014), Part 2 (pattern‑evaluation tests, IEC 61260‑2:2016), and Part 3 (periodic tests, IEC 61260‑3:2016). These parts are intended to be used together for a complete testing and specification framework.

Q: What are the key keywords?

A: Octave‑band, fractional‑octave, filter, pattern evaluation, IEC 61260, ANSI/ASA S1.11, class 1, class 2, electroacoustics, test procedures.