實驗室為了使量測結果的報告具備公信力與提昇服務作業品質，通過認證可說是最公正之選擇。財團法人全國認證基金會(TAF)實驗室認證處，依據ISO/IEC 17025實驗室認證標準為進行認證的工作，其中對於實驗室有管理及技術的要求。技術要求方面其中包含了申請項目的「標準作業程序」及「量測不確定度評估數據資料」，本文針對此兩者以吸音係數量測項目為例，探討建立量測程序與不確定度評估的研究，期望作為國內音響實驗室對於以提昇材料檢測之品質為目標的參考範本。
本研究以台灣科技大學建築系音響實驗室為例，依據ISO 354規範量測材料吸音係數與建立標準作業程序，不確定度評估則依循ISO GUM規範。結果發現對限制實驗室量測條件，將使受測結果趨近於真值或一定的合理範圍內；量測過程中保持系統的穩定，便不會有太大的隨機變異產生；分析的等價吸音面積不確定度，於高頻有較多的不確定度值，分量中以空間聲場不確定度的貢獻度最多，並且在低頻與高頻帶發生較大的變化，約為0.25∼0.5㎡之間；吸音係數在95％信賴水準下的擴充不確定度範圍為0.03∼0.11之間。

In order to let report on the results of measurements in the laboratories can be reliable for the client, by way of accreditation may have a good approach to improve the quality of service operations. In accordance with laboratory accreditation standards ISO/IEC 17025 for the accreditation works, Taiwan Accreditation Foundation (TAF) has proposed to the requirements of management and technical for the laboratory. The technical requirements are include "Standard Operation Procedure" and "Data of Uncertainty in Measurement” of application items among them. This paper aims at the measurement of sound absorption as an example and to establish of measurement procedures and estimation of uncertainty of measurement which can be a good sample as the goal. It’s also may improved domestic acoustical laboratory by good quality of material test. In this study, with the National Taiwan University of Science and Technology Laboratory, Department of Architecture acoustical laboratory as a example. ISO 354 norms based on measurement of sound absorption and establishment of measurement procedures, ISO GUM norms based on estimation of uncertainty of measurement. The result discovered that limits the laboratory gauging condition, will cause to measure the result in the true value or in the certain reasonable scope. In the process of measurement, maintaining of system's stability will not have the big random error. The evaluation of uncertainty of equivalent sound absorption area has the high uncertainty value in high frequency. In the component are most by the spatial sound field uncertainty of contribution, and has the big change in low frequency and high frequency band, approximately is 0.25~0.5㎡. The sound absorption coefficient under 95 percent level of confidence for the expanded uncertainty scope is about 0.03~0.11.

中文文獻
C1.＜ISO/IEC 17025：2005量測與校正實驗室能力一般要求＞，財團法人全國認證基金會（2005）。
C2.江哲銘、林芳銘，＜CNS 音響性能規範更新之研究＞，內政部建築研究所委託研究報告，（2006）。
C3.蔡國隆、王光賢、涂聰賢，＜聲學原理與噪音量測控制＞，全華科技，（2005）。
C4.＜量測結果量測不確定度評估指引＞，財團法人全國認證基金會（2005）。
C5.陳岳舟, 羅慧娟，＜量測不確定度評估 理論與實務＞，工業技術研究院量測技術發展中心（2001）。
C6.＜有關量測不確定度的政策＞，財團法人全國認證基金會（2007）。
C7.方冠權、郭晃銘、蔡森南，＜材料抗拉強度量測不確定度與誤差分析問題之探討＞，經濟部標準檢驗局自行研究計畫，（2005）。
C8.房性中，＜量測作業之不確定度分析與探討＞，中華技術雜誌，（2001）。
C9.楊閔隆，＜吸音材吸音係數檢測範例之探討-以吸音筒為例＞，內政部建築研究自行研究報告，（2006）。
C10.許穎、姚秋平、時根火，＜混響室法校準標準聲源聲功率級不確定度評定＞，電聲技術（2002）。
C11.＜CNS 9056 聲學-迴響室之吸音量測＞中華民國國家標準，經濟部標準檢驗局，（2008）。
C12.＜CNS 15218 聲學-建築物使用之吸音材-吸音量評定＞中華民國國家標準，經濟部標準檢驗局，（2008）。
英文文獻
Journals-
E1.Wieland Weise, ＜Measurement Uncertainties for Sound Field Levels in Rooms＞, BUILDING ACOUSTICS ,Volume 10,Number 4（2003）.p.281-287
E2.Ramis J.; Alba J.; Martínez J.; Redondo J. ,＜The uncertainty in absorption coefficients measured in reverberant chambers: A case study＞, Noise & Vibration Worldwide, Volume 36, Number 1, January（2005）. p.7-12
E3.Cops, J. Vanhaecht and K. Leppens, Sound Absorption in a Reverberation Room: Causes of Discrepancies on Measurement Results, Applied Acoustics 46（1995）. p.215-232,
E4.Rodrigo Pereira Barretto da Costa-Fe’lix,＜Type B uncertainty in sound power measurements using comparison method＞,Measurement ,v.39 Issue 2, （2006）,p.169-175
E5.Izewska,＜Measurement uncertainty of the sound absorption coefficient＞,
The Journal of the Acoustical Society of America.v.123（2008）p.3501
Standards-
E6.ISO 354, Acoustics－Measurement of sound absorption in a Reverberation room,Geneva, Switzerland. (2003).
E7.ISO 9613-1 Acoustics－Attenuation of sound during propagation outdoors—Part 1: Calculation of the absorption of sound by the atmosphere, Geneva, Switzerland（1993）.
E8.ASTM C423,＜Standard Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method＞, ASTM International（2002）
E9.ISO 11654, Acoustics－Sound absorbers for use in buildings－Rating of sound absorption, Geneva, Switzerland (1997).
E10. ISO 5725-1, Accuracy (trueness and precision) of measurement methods and results -- Part 1: General principles and definitions, Switzerland (1994).
E11. ISO Guide to the Expression of Uncertainty in Measurement（GUM）, Geneva, Switzerland (1995).
E12. ISO 140-2, Acoustics－Measurement of sound insulation in buildings and of building elements- determination, verification and application of precision data, Geneva, Switzerland (1991).
E13. ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories, Geneva, Switzerland (2005).
Book¬s-
E14. Cremer Lothar、Helmut A. Müller ,＜Principles and applications of room acoustics＞, Elsevier Science Pub. Co (1982).
E15. Doelle, Leslie L., ＜Environmental acoustics＞, New York, McGraw-Hill（1972）.p.46-47
E16. Kuttruff. Heinrich，＜Room Acoustics＞, Fourth edition ,Elsevier Applied Science. London (2000).p.265-267
E17. F. Alton Everest, ＜Master Handbook Of Acoustics＞, Fourth edition, McGraw-Hill Professional（2000）.p.135-139,182
E18. Trevor J. Cox, Peter D'Antonio, ＜Acoustic Absorbers and Diffusers: Theory, Design, and Application＞, Taylor & Francis（2004）.p.68-71
E19. Lawrence E. Kinsler, Austin R. Frey, Alan B. Coppens, James V. Sanders,
＜Fundamentals of Acoustics＞, Wiley（2000）.
其他
A1.財團法人全國認證基金會網站 http://service.taftw.org.tw/tafweb/indexC.aspx
A2. B&K DIRAC 4.0 Type 7841聲學量測軟體說明檔