17.140.01 声学测量和噪声抑制综合 标准查询与下载

BS ISO 532-1:2017 声学. 响度的计算方法. Zwicker法

Acoustics. Methods for calculating loudness. Zwicker method

ASTM E1139/E1139M-17 连续监测金属压力边界声发射的标准实践

1.1 This practice provides guidelines for continuous monitoring of acoustic emission (AE) from metal pressure boundaries in industrial systems during operation. Examples are pressure vessels, piping, and other system components which serve to contain system pressure. Pressure boundaries other than metal, such as composites, are specifically not covered by this document. 1.2 The functions of AE monitoring are to detect, locate, and characterize AE sources to provide data to evaluate their significance relative to pressure boundary integrity. These sources are those activated during system operation, that is, no special stimulus is applied to produce AE. Other methods of nondestructive testing (NDT) may be used, when the pressure boundary is accessible, to further evaluate or substantiate the significance of detected AE sources. 1.3 Units—The values stated in either SI units or inchpound units are to be regarded as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standards. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 6. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Practice for Continuous Monitoring of Acoustic Emission from Metal Pressure Boundaries

ASTM E1106-12(2017) 声发射传感器初步校准的标准测试方法

1.1 This test method covers the requirements for the absolute calibration of acoustic emission (AE) sensors. The calibration yields the frequency response of a transducer to waves, at a surface, of the type normally encountered in acoustic emission work. The transducer voltage response is determined at discrete frequency intervals of approximately 10 kHz up to 1 MHz. The input is a given well-established dynamic displacement normal to the mounting surface. The units of the calibration are output voltage per unit mechanical input (displacement, velocity, or acceleration). 1.2 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for Primary Calibration of Acoustic Emission Sensors

ASTM E1211/E1211M-17 使用表面安装的声发射传感器进行泄漏检测和定位的标准实践

1.1 This practice describes a passive method for detecting and locating the steady state source of gas and liquid leaking out of a pressurized system. The method employs surfacemounted acoustic emission sensors (for non-contact sensors see Test Method E1002), or sensors attached to the system via acoustic waveguides (for additional information, see Terminology E1316), and may be used for continuous in-service monitoring and hydrotest monitoring of piping and pressure vessel systems. High sensitivities may be achieved, although the values obtainable depend on sensor spacing, background noise level, system pressure, and type of leak. 1.2 Units—The values stated in either SI units or inchpound units are to be regarded as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standards. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Practice for Leak Detection and Location Using Surface-Mounted Acoustic Emission Sensors

ASTM E650/E650M-17 压电声发射传感器安装标准指南

1.1 This document provides guidelines for mounting piezoelectric acoustic emission (AE) sensors. 1.2 Units—The values stated in either SI units or inchpound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Guide for Mounting Piezoelectric Acoustic Emission Sensors

ISO 532-1:2017 声学. 响度的计算方法. 第1部分: Zwicker法

This document specifies two methods for estimating the loudness and loudness level of sounds as perceived by otologically normal persons under specific listening conditions. The first method is intended for stationary sounds and the second method for arbitrary non-stationary (time-varying) sounds, including stationary sounds as a special case. The methods can be applied to any sound recorded as single-channel measurements using a microphone, or as multi-channel measurements, for example by means of a head and torso simulator (see Annex D). Since most important technical sounds are time-varying, a model of time-varying loudness is preferable. The methods are based on the Zwicker algorithm.[14] The method for stationary sounds is provided for reasons of continuity and also offers the use of measured one-third-octave-band levels as input. The more general method for arbitrary sounds calculates the specific loudness pattern based on measured time signals by applying a signal processing model that is directly related to physiological and psychological characteristics of the human hearing system. Loudness is calculated from the specific loudness pattern. It has been shown that this method provides a good match to the results of many loudness experiments using synthetic and technical sounds. No prior knowledge about the properties of the sound (e.g. broadband or narrowband noise, tonal content) and no user interactions are required for the fully automated application of the method. The evaluation of the harmful effect of sound events is outside the scope of this document.

Acoustics - Methods for calculating loudness - Part 1: Zwicker method

ISO 532-2:2017 声学. 响度的计算方法. 第2部分: Moore-Glasberg法

This document specifies a method for estimating the loudness and loudness level of stationary sounds as perceived by otologically normal adult persons under specific listening conditions. It provides an algorithm for the calculation of monaural or binaural loudness for sounds recorded using a single microphone, using a head and torso simulator, or for sounds presented via earphones. The method is based on the Moore-Glasberg algorithm. NOTE 1 Issues of binaural calculations are discussed in Annex A. NOTE 2 Users who wish to study the details of the calculation method can review or implement the source code, which is entirely informative and provided with this document for the convenience of the user. This method can be applied to tones, broadband noises and complex sounds with sharp line spectral components, for example transformer hum or fan noise. NOTE 3 It has been shown (see Reference [15]) that this method provides a good match to the contours of equal loudness level as defined in ISO 226:2003 and the reference threshold of hearing as defined in ISO 389-7:2005. The evaluation of the harmful effect of sound events is outside the scope of this document.

Acoustics - Methods for calculating loudness - Part 2: Moore-Glasberg method

EN ISO 3745:2012/A1:2017 声学.声压法测定噪声源声功率级.消声室和半消声室精密法 包含修改件A1,2017

Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Precision methods for anechoic rooms and hemi-anechoic rooms - Amendment 1 (ISO 3745:2012/Amd 1:2017)

17/30342414 DC BS ISO 12913-2 声学 音景 第 2 部分：数据收集和报告要求

BS ISO 12913-2. Acoustics. Soundscape. Part 2. Data collection and reporting requirements

ISO 3745:2012/Amd 1:2017 声学.用声压测定噪声源的声功率级和声能级.消声室和半消声室的精确方法.修改件1

Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Precision methods for anechoic rooms and hemi-anechoic rooms — Amendment 1

ASTM E2611-17 基于转移矩阵法的多孔材料声学特性的正常发生测定的标准测试方法

1.1 This test method covers the use of a tube, four microphones, and a digital frequency analysis system for the measurement of normal incident transmission loss and other important acoustic properties of materials by determination of the acoustic transfer matrix. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for Normal Incidence Determination of Porous Material Acoustical Properties Based on the Transfer Matrix Method

ISO 26101:2017 声学. 自由场环境资格证明试验方法

Acoustics - Test methods for the qualification of free-field environments

KS I ISO 3747:2016 声学 使用声压测定噪声源的声功率级和声能级 混响环境中现场使用的工程/测量方法

Acoustics－Determination of sound power levels of noise sources－Comparison method in situ

KS I ISO 3745-2016 声学声压法测定噪声源的声功率级和声能级消声室和半消声室的精密方法

Acoustics－Determination of sound power levels and sound energy levels of noise sources using sound pressure－Precision methods for anechoic rooms and hemi-anechoic rooms

KS I ISO 3745:2016 声学 用声压法测定噪声源声功率级 消声室和半消声室精密法

Acoustics－Determination of sound power levels and sound energy levels of noise sources using sound pressure－Precision methods for anechoic rooms and hemi-anechoic rooms

KS I ISO 3747-2016 声学噪声源声功率级的测定现场比较法

Acoustics－Determination of sound power levels of noise sources－Comparison method in situ

KS F 2814-1-2016 阻抗管吸声系数和阻抗的测定第1部分：驻波比法

Determination of sound absorption coefficient and impedance in impedance tubes Part 1：Method using standing wave ratio

KS I ISO 3741:2016 声学 声压法测定噪声源声功率级 混响室精密法

Acoustics－Determination of sound power levels of noise sources using sound pressure－Precision methods for reverberation rooms

KS I ISO 3741-2016 声学声压法测定噪声源声功率级混响室的精密法

Acoustics－Determination of sound power levels of noise sources using sound pressure－Precision methods for reverberation rooms

KS F 2814-1-2016(2021) 阻抗管吸声系数和阻抗的测定第1部分:驻波比法

Determination of sound absorption coefficient and impedance in impedance tubes Part 1：Method using standing wave ratio