A59 声学计量 标准查询与下载

ASA S12.9 PART 5-1998 描述和测量环境声音数量和程序,第5部分协调土地用途声音描述符

Quantities and Procedures for Description and Measurement of Environmental Sound - Part 5: Sound Level Descriptors for Determination of Compatible Land Use

Quantities and Procedures for Description and Measurement of Environmental Sound - Part 5: Sound Level Descriptors for Determination of Compatible Land Use

ASTM E1050-98(2006) 管子、双扩音器和数字频率分析系统用传声材料的阻抗和吸收的试验方法

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).4 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 AccreditationA procedure for accrediting a laboratory for performing this test method is given in Annex A1.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

JJG 277-1998 标准声源检定规程

Verification Regulation of Reference Sound Source

JJG 928-1998 超声波测距仪检定规程

Verification Regulation of Utrasonic Ranger

JJG 639-1998 医用超声诊断仪超声源检定规程

Verification Regulation of Ultrasonic Source for Medical Ultrasonic Diagnostic Equipment

SANS 8253-3:1996 声学．听力测试方法．第3部分：语言测听

Specifies procedures and requirements for speech audiometry with the recorded test material being presented by air conduction through an earphone, by bone conduction through a bone vibrator, or from a loudspeaker for sound field audiometry. Methods for u

Acoustics - Audiometric test methods Part 3: Speech audiometry

SANS 9614-1:1993 声学．利用声音强度测定噪声源功率级．第1部分：离散点测量

Specifies a method for measuring the component of sound intensity normal to a measurement surface which is chosen so as to enclose the noise source(s) of which the sound power level is to be determined.

Acoustics - Determination of sound power levels of noise sources using sound intensity Part 1: Measurement at discrete points

ISO 266:1997 声学 优选频率

This International Standard specifies preferred frequencies for acoustical measurements. The preferred frequencies are based on the R10 series of preferred numbers in ISO 3 and the reference frequency of 1 000 Hz. For most acoustical measurements and presentations of data, a frequency spacing based on a constant percentage increment is generally preferred and the test frequencies then form a geometric series. For certain acoustical measurements, a constant frequency increment is a suitable spacing. The International Standard deals with the geometric series and is not intended to apply to cases where a constant frequency increment, or other particular spacing, would be more suitable, or where there may be good reasons for the adoption or retention of other frequencies. This International Standard does not deal with: — frequencies for music; — all audiometric frequencies; — series other than R10 from ISO 3.

Acoustics - Preferred frequencies

ASA S12.6-1997 听力保护器测量人耳衰减方法

This standard specifies laboratory-based procedures for measuring, analyzing, and reporting the noise-reducing capabilities of hearing protection devices. The methods consist of psychophysical tests conducted on human subjects to determine real-ear attenuation at threshold. Two methods are provided, differing in their subject selection, training, hearing protector fitting procedures, and experimenter involvement, but corresponding in all electroacoustic and psychophysical aspects. One method, designated experimentersupervised fit is intended to describe the upper limits of hearing protector performance. The second method, designated subject fit, is conducted with persons naive with respect to the use of hearing protection. It approximates the attenuation that has been achieved by groups of users as reported in real-world occupational studies (Berger and Franks,1996).

Methods for Measuring the Real-Ear Attenuation of Hearing Protectors

SANS 9614-2:1996 声学．利用声音强度测定噪声源功率级．第2部分：扫描式测量

Specifies a method for measuring the component of sound intensity normal to a measurement surface which is chosen so as to enclose the noise source(s) of which the sound power level is to be determined.

Acoustics - Determination of sound power levels of noise sources using sound intensity Part 2: Measurement by scanning

NF S31-600-2:1997 声学.有机械装置及设备的工作地点低噪音设计推荐惯例.第2部分:噪音控制度量

Acoustics. Recommended practice for the design of low-noise workplaces containing machinery. Part 2 : noise control measures.

ARI 275-1997 户外单一设备声音等级级别应用

This standard applies to the outdoor sections of factory-made air-conditioning and heat pump equipment, as defiied in Section 3 and ARi Standard 210D40 when rated in accordance with ARI Standard 270.

Application of Sound Rating Levels of Outdoor Unitary Equipment

ASA S1.15 PART 1-1997 测量麦克风:第1部分实验室标准麦克风规范

Measurement Microphones - Part 1: Specifications for Laboratory Standard Microphones

Measurement Microphones - Part 1: Specifications for Laboratory Standard Microphones

ASA S2.16-1997 振动噪声测量和船设备接受标准

Viratory noise measurements and acceptance criteria of shipboard equipment.

Vibratory Noise Measurements and Acceptance Criteria of Shipboard Equipment

NF S31-600-1:1997 声学.有机械装置及设备的工作地点低噪音设计实用推荐法.第1部分:噪音控制方法

Acoustics. Recommended practice for the design of low-noise workplaces containing machinery. Part 1 : noise control strategies.

ASA S12.44-1997 从声音功率水平计算和测量工作站和其它地方机械设备发射噪声方法

Methods for Calculation of Sound Emitted by Machinery and Equipment at Workstations and other Specified Positions from Sound Power Level

Methods for Calculation of Sound Emitted by Machinery and Equipment at Workstations and other Specified Positions from Sound Power Level

ASA S12.43-1997 工作站和其它地方机械设备发射噪声测量方法

Method for preparation of a standard material for dynamic mechainal measurement.

Methods for Measurement of Sound Emitted by Machinery and Equipment at Workstations and other Specified Positions

ASTM E650-97(2007) 安装压电声发射传感器

The methods and procedures used in mounting AE sensors can have significant effects upon the performance of those sensors. Optimum and reproducible detection of AE requires both appropriate sensor-mounting fixtures and consistent sensor-mounting procedures.1.1 This document provides guidelines for mounting piezoelectric acoustic emission (AE) sensors.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 Mounting Piezoelectric Acoustic Emission Sensors

JJG 394-1997 超声多普勒胎儿监护仪超声源检定规程

Verification Regulation of Ultrasonic Source for Ultrasonic Doppler Fetal Monitor

ASTM E1503-97 使用数字统计分析系统测量室外声音的测试方法

1.1 This test method covers the measurement of outdoor sound levels at specific locations using a digital statistical analyzer and a formal measurement plan. 1.1.1 This test method provides basic requirements for obtaining either a single set of data or multiple sets of related data. However, because there are numerous circumstances and varied objectives requiring multiple sets of data, the test method does not address planning of the measurement program. 1.2 The use of results of measurements performed using this test method include, but are not limited to, the following: 1.2.1 To characterize the acoustical environment of a site, 1.2.2 To characterize the sound emissions of a specific sound source which exhibits a temporal variation in sound output, and 1.2.3 To monitor the effectiveness of a noise impact mitigation plan. 1.3 This test method is intended to be used in conjunction with a measurement plan that references this test method. Changes or additions to the provisions of this test method should be clearly stated in the plan. 1.3.1 In the event it is necessary, for example, because of time constraints, to conduct measurements without first formalizing a plan, this test method can be used if an operator/observer whose qualifications are satisfactory to both the performing organization and the client is present at all times during the measurements and who complies, to the extent possible, with all the applicable requirements of this test method, including record keeping. 1.4 The data obtained using this test method enable comparison of statistical sound level data with appropriate criteria. 1.4.1 The data obtained with this test method can be used in the derivation of loudness levels provided the necessary requirements regarding sample duration and signal bandwidth are observed in collecting the data. It is recommended that a specialist in the area of loudness evaluation be consulted in preparing a plan for measurements intended to produce data which will be used for this purpose. 1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information only. 1.6 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 determine the applicability of regulatory limitations prior to use.

Standard Test Method for Conducting Outdoor Sound Measurements Using a Digital Statistical Analysis System