A59 声学计量 标准查询与下载

ANSI/AHRI 280-2012 63 Hz倍频带内混响室的限制要求

This standard applies to products rated in the 63 Hz Octave Band (50, 63 and 80 Hz One-Third Octave Bands) where the sound power is determined from measurements made in a reverberation room by using the comparison method as specified per ANSI/ASA Standard S12.51/ISO: 3741.

Requirements for the Qualification of Reverberation Rooms in the 63 Hz Octave Band

ASTM E1139/E1139M-12 声发射连续监视金属压力极限的标准方法

Acoustic emission examination of a structure requires application of a mechanical or thermal stimulus. In this case, the system operating conditions provide the stimulation. During operation of the pressurized system, AE from active discontinuities such as cracks or from other acoustic sources such as leakage of high-pressure, high-temperature fluids can be detected by an instrumentation system using sensors mounted on the structure. The sensors are acoustically coupled to the surface of the structure by means of a couplant material or pressure on the interface between the sensing device and the structure. This facilitates the transmission of acoustic energy to the sensor. When the sensors are excited by acoustic emission energy, they transform the mechanical excitations into electrical signals. The signals from a detected AE source are electronically conditioned and processed to produce information relative to source location and other parameters needed for AE source characterization and evaluation. AE monitoring on a continuous basis is a currently available method for continuous surveillance of a structure to assess its continued integrity. The use of AE monitoring in this context is to identify the existence and location of AE sources. Also, information is provided to facilitate estimating the significance of the detected AE source relative to continued pressure system operation. Source location accuracy is influenced by factors that affect elastic wave propagation, by sensor coupling, and by signal processor settings. It is possible to measure AE and identify AE source locations of indications that cannot be detected by other NDT methods, due to factors related to methodological, material, or structural characteristics. In addition to immediate evaluation of the AE sources, a permanent record of the total data collected (AE plus pressure system parameters measured) provides an archival record which can be re-evaluated.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 Units8212;The values stated in either SI units or inch-pound 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.

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

DIN EN ISO 8253-1:2011 声学.听力测定试验方法.第1部分:纯音调空气和骨传导声测定(ISO 8253-1-2010);德文版本EN ISO 8253-1-2010

Acoustics - Audiometric test methods - Part 1: Pure-tone air and bone conduction audiometry (ISO 8253-1:2010); German version EN ISO 8253-1:2010

BS EN ISO 8253-1:2010 声学.听力测定试验方法.纯音调空气和骨传导声测定

Acoustics. Audiometric test methods. Pure-tone air and bone conduction audiometry

ANSI/AHRI 250-2011 参考生源的性能和校准

Applies to all Reference Sound Sources used in conjunction with AHRI sound rating standards and covers the one-third octave band frequency range from 50 to 10,000 Hz. This standard also includes calibration over a limited frequency range. Multiple Reference Sound Sources may be used to cover the entire frequency range from 50 to 10,000 Hz.

Performance and Calibration of Reference Sound Sources

ISO 8253-1:2010 声学.听力测试方法.第1部分:基本纯音气导和骨导听阈测听方法

This part of ISO 8253 specifies procedures and requirements for pure-tone air conduction and bone conduction threshold audiometry. For screening purposes, only pure-tone air conduction audiometric test methods are specified. It is possible that the procedures are not appropriate for special populations, e.g. very young children. This part of ISO 8253 does not cover audiometric procedures to be carried out at levels above the hearing threshold levels of the subjects. Procedures and requirements for speech audiometry, electrophysiological audiometry, and where loudspeakers are used as a sound source are not specified.

Acoustics - Audiometric test methods - Part 1: Pure-tone air and bone conduction audiometry

SAE J2846-2010 体腔填充材料的声学性能的实验室测量

This SAE Recommended Practice describes a laboratory test procedure for measuring the acoustical performance of a system consisting of a body cavity filler material formed into a rectangular cross-section channel. Materials for this test may include both heat reactive and chemically reactive products, with or without a shelf to simulate a baffle in an application, or a combination of body cavity filler and aluminum foil to enhance the performance. These materials are commonly installed in transportation systems such as ground vehicles, and thus reduce the noise propagation through the rails, rockers, and pillar/posts. This document is intended to rank order the acoustical performance of materials for application on channels using general automotive steel, such that the effects of sealing of pinch welds in addition to the material could be easily evaluated. However, the channel is not an actual part (i.e., real life section) of the vehicle, and therefore results obtained from this study will have to be carefully interpreted considering limitations of section size/shape and full sealing (or not) of the section. The acoustical performance is expressed in terms of insertion loss (IL) which is described in Section 3 Test Method. The test procedure described here is based on the method described in SAE J1400. However, this document differs from the SAE J1400 method in that the J1400 measures sound transmission loss, and this document measures IL of body cavity materials in a cavity. This document covers the useful frequency range of interest in 1/3 octave band center frequencies. The lower limit of the actual frequency range is limited by the size of the channel and/or the volume of the reverberation room. Two rectangular cross-section channels are cited in this standard. These are 75 mm x 75 mm and 150 mm x 150 mm in cross-section and provide valid data at and above 800 Hz and 400 Hz 1/3 octave band frequencies, respectively, provided the reverberation room can generate diffuse sound field at those frequencies.

Laboratory Measurement of the Acoustical Performance of Body Cavity Filler Materials

ANSI/AHRI 261(SI)-2010 管道中空气移动和调节设备的噪声等级

Sound Rating of Ducted Air Moving and Conditioning Equipment

ANSI/AHRI 220-2010 测定高压交流电(HVAC)设备声功率的混响室条件和测试规程

Reverberation Room Qualification and Testing Procedures for Determining Sound Power of HVAC Equipment

ASTM F1430/F1430M-10 带载荷调节装置的航空人员用隔音和非隔音装置的声发射检验的标准试验方法

This test method provides a means of evaluating acoustic emissions generated by the rapid release of energy from localized sources within an APD under controlled loading. The resultant energy releases occur during intentional application of a controlled predetermined load. These energy releases can be monitored and interpreted by qualified individuals. This test method permits testing of the major components of an aerial device under controlled loading. This test method utilizes objective criteria for evaluation and may be discontinued at any time to investigate a particular area of concern or prevent a fault from continuing to ultimate failure. This test method provides a means of detecting acoustic emissions that may be defects or irregularities, or both, affecting the structural integrity or intended use of the aerial device. Sources of acoustic emission found with this test method shall be evaluated by either more refined acoustic emission test methods or other nondestructive techniques (visual, liquid penetrant, radiography, ultrasonics, magnetic particle, etc.). Other nondestructive tests may be required to locate defects present in APDs. Defective areas found in aerial devices by this test method should be repaired and retested as appropriate. Repair procedure recommendations are outside the scope of this test method.1.1 This test method describes a procedure for acoustic emission (AE) testing of aerial personnel devices (APDs) with supplemental load handling attachments. 1.1.1 Equipment Covered8212;This test method covers the following types of vehicle-mounted aerial personnel devices with supplemental load handling attachments: 1.1.1.1 Extensible-boom APDs, 1.1.1.2 Articulating-boom APDs, and 1.1.1.3 Any combination of 1.1.1.1 and 1.1.1.2. 1.1.2 Equipment Not Covered8212;This test method does not cover any of the following equipment: 1.1.2.1 Aerial personnel devices without supplemental load handling attachments, 1.1.2.2 Digger-derricks with platform, 1.1.2.3 Cranes with platform, and 1.1.2.4 Aerial devices with load-lifting capabilities located anywhere other than adjacent to the platform. Note 18212;This test method is not intended to be a stand-alone NDT method for the verification of the structural integrity of an aerial device. Other NDT methods should be used to supplement the results. 1.2 The AE test method is used to detect and area-locate emission sources. Verification of emission sources may require the use of other nondestructive test (NDT) methods, such as radiography, ultrasonics, magnetic particle, liquid penetrant, and visual inspection. (Warning—This test method requires that external loads be applied to the superstructure of the vehicle under test. During the test, caution must be taken to safeguard personnel and equipment against unexpected failure or instability of the vehicle or components.) 1.3 The values stated in either SI units or inch-pound 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 non-conformance with the standard. 1.4 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and deter......

Standard Test Method for Acoustic Emission Testing of Insulated and Non-Insulated Aerial Personnel Devices with Supplemental Load Handling Attachments

ASTM E2374-10 声发射系统性能校验标准指南

Acoustic Emission data acquisition can be affected by numerous factors associated with the electronic instrumentation, cables, sensors, sensor holders, couplant, the examination article on which the sensor is mounted, background noise, and the user's settings of the acquisition parameters (for example, threshold). This guide is not intended to replace annual (or semi-annual) instrumentation calibration (see Practice E750) or sensor recertification (see Practice E1781). This guide is not intended to replace routine electronic evaluation of AE instrumentation or routine sensitivity verification of AE sensors (see Guide E976). This guide is not intended to verify the maximum processing capacity or speed of an AE system. This guide 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 guide to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.1.1 System performance verification methods launch stress waves into the examination article on which the sensor is mounted. The resulting stress wave travels in the examination article and is detected by the sensor(s) in a manner similar to acoustic emission. 1.2 This guide describes methods which can be used to verify the response of an Acoustic Emission system including sensors, couplant, sensor mounting devices, cables and system electronic components. 1.3 Acoustic emission system performance characteristics, which may be evaluated using this document, include some waveform parameters, and source location accuracy. 1.4 Performance verification is usually conducted prior to beginning the examination. 1.5 Performance verification can be conducted during the examination if there is any suspicion that the system performance may have changed. 1.6 Performance verification may be conducted after the examination has been completed. 1.7 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.8 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.

Standard Guide for Acoustic Emission System Performance Verification

ASTM E1050-10 用管子,双扩音器和数字频率分析系统测定传声材料的阻抗和吸收的标准试验方法

This test method can be applied to measure sound absorption coefficients of absorptive materials at normal incidence, that is, 0°. It also can be used to determine specific impedance and admittance ratios. The properties measured with this test method are useful in basic research and product development of sound absorptive materials. Normal incidence sound absorption coefficients can be quite useful in certain situations where the material is placed within a small acoustical cavity close to a sound source, for example a closely-fitted machine enclosure. This test method allows one to compare relative values of sound absorption when it is impractical to procure large samples for accurate random-incidence measurements in a reverberation room. Estimates of the random incidence absorption coefficients can be obtained from normal impedance data for locally-reacting materials (2). Note 28212;The classification, “locally-reacting” includes fibrous materials having high internal losses. Formulas have been developed for converting sound absorption properties from normal incidence to random incidence, for both locally-reacting and bulk-reacing materials (3). Measurements described in this test method can be made with high precision, but these measurements may be misleading. Uncertainties of greater magnitude than those from the measurements may occur from other sources. Care should be exercised to sample nonuniform materials adequately (see 11.1).1.1 This test method covers the use of an impedance tube, two microphone locations, and a digital frequency analysis system for the determination of normal incidence sound absorption coefficients and normal specific acoustic impedance ratios of materials. 1.2 Laboratory Accreditation8212;A procedure for accrediting a laboratory for performing this test method is given in Annex A1. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the use of this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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

KS I ISO 25177:2009 土质.区域土壤说明

이 표준은 주어진 부지에서 토양 및 토양의 환경적 내용을 기술하기 위한 지침이다. 부지는

Soil quality-Field soil description

DIN 1320:2009 声学.术语

Acoustics - Terminology

NF S30-007-9*NF EN ISO 389-9:2009 声学.校准测听设备的基准零级.第9部分:测定基准听力阈值的首选试验条件

Acoustics - Reference zero for the calibration of audiometric equipment - Part 9 : preferred test conditions for the determination of reference hearing threshold levels.

JJF 1228-2009 声功率计校准规范

本规范适用于通过在已知测量表面上的表面声压级和测量表面面积换算成声功率级的声功率计的校准。

Calibration Specification for Sound Powder Meters

BS EN ISO 1683:2008 声学.听觉和振动等级用基准参考值

This International Standard specifies reference values used in acoustics, in order to establish a uniform basis for the expression of acoustical and vibratory levels. The reference values are mandatory for use in acoustics for airborne and structure-borne sound, but may also be used in other applications.

Acoustics - Preferred reference values for acoustical and vibratory levels

JIS S 0014 AMD 1:2009 老人和残疾人用指南.消费者产品的听觉信号.老人和在嘈杂环境中用信号的声压级(修改件1)

This translation has been made based on the Amendment to the origi- nal Japanese Industrial Standard revised by the Minister of Economy, Trade and Industry through deliberations at the Japanese Industrial Standards Committee as the result of proposal for revision of Japanese Industrial Standard with the draft being attached, based on the provi- sion of Article 12 Clause 1 of the Industrial Standardization Law ap- plicable to the case of revision by the provision of Article 14. Consequently, JIS S 0014:2003 is partially replaced with this Amend- ment.

Guidelines for the elderly and people with disabilities -- Auditory signals on consumer products -- Sound pressure levels of signals for the elderly and in noisy conditions (Amendment 1)

ASTM E2611-09 基于传输矩阵法测量声学材料的垂直入射传输的标准试验方法

There are several purposes of this test: For transmission loss: (a) to characterize the sound insulation characteristics of materials in a less expensive and less time consuming approach than Test Method E 90 and ISO 140-3 (“reverberant room methods”), (b) to allow small samples tested when larger samples are impossible to construct or to transport, (c) to allow a rapid technique that does not require an experienced professional to run. For transfer matrix: (a) to determine additional acoustic properties of the material; (b) to allow calculation of acoustic properties of built-up or composite materials by the combination of their individual transfer matrices. There are significant differences between this method and that of the more traditional reverberant room method. Specifically, in this approach the sound impinges on the specimen in a perpendicular direction (“normal incidence”) only, compared to the random incidence of traditional methods. Additionally, revereration room methods specify certain minimum sizes for test specimens which may not be practical for all materials. At present the correlation, if any, between the two methods is not known. Even though this method may not replicate the reverberant room methods for measuring the transmission loss of materials, it can provide comparison data for small specimens, something that cannot be done in the reverberant room method. Normal incidence transmission loss may also be useful in certain situations where the material is placed within a small acoustical cavity close to a sound source, for example, a closely-fitted machine enclosure or portable electronic device. Transmission loss is not only a property of a material, but is also strongly dependent on boundary conditions inherent in the method and details of the way the material is mounted. This must be considered in the interpretation of the results obtained by this test method. The quantities are measured as a function of frequency with a resolution determined by the sampling rate, transform size, and other parameters of a digital frequency analysis system. The usable frequency range depends on the diameter of the tube and the spacing between the microphone positions. An extended frequency range may be obtained by using tubes with various diameters and microphone spacings. The application of materials into acoustical system elements will probably not be similar to this test method and therefore results obtained by this method may not correlate with performance in-situ.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.

Standard Test Method for Measurement of Normal Incidence Sound Transmission of Acoustical Materials Based on the Transfer Matrix Method

DIN EN ISO 10846-1:2008 声学和振动.弹性元件的振动-声传输特性的实验室测量.第1部分:原理和指南

This part of ISO 10846 explains the principles underlying ISO 10846 2, ISO 10846-3, ISO 10846-4 and ISO 10846-5 for determining the transfer properties of resilient elements from laboratory measurements and provides assistance in the selection of the appropriate part of this series. It is applicable to resilient elements that are used to reduce a) the transmission of audio frequency vibrations (structure-borne sound, 28 Hz to 20 kHz) to a structure which may, for example, radiate fluid-borne sound (airborne, waterborne, or other), and b) the transmission of low-frequency vibrations (typically 1 Hz to 80 Hz), which may, for example, act upon human subjects or cause damage to structures of any size when the vibration is too severe. The data obtained with the measurement methods, which are outlined in this part of ISO 10846 and further detailed in ISO 10846-2, ISO 10846-3, ISO 10846-4 and ISO 10846-5, can be used for -- product information provided by manufacturers and suppliers, -- information during product development, quality controL, and -- calculation of the transfer of vibrations through resilient elements. The conditions for the validity of the measurement methods are a) linearity of the vibrational behaviour of the resilient elements (this includes elastic elements with non-linear static load-deflection characteristics, as long as the elements show approximate linearity for vibrational behaviour for a given static preload), and b) the contact interfaces of the vibration isolator with the adjacent source and receiver structures can be considered as point contacts.

Acoustics and vibration - Laboratory measurement of vibro-acoustic transfer properties of resilient elements - Part 1: Principles and guidelines (ISO 10846-1:2008); English version of DIN EN ISO 10846-1:2008-11