ASA S12.68 2007 R2017
$79.63
ANSI/ASA S12.68-2007 (R2017) American National Standard Methods of Estimating Effective A-Weighted Sound Pressure Levels When Hearing Protectors are Worn
| Published By | Publication Date | Number of Pages |
| ASA | 2007 | 42 |
None
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 13 | 1 Scope and Applications 1.1 Scope 1.2 Applications |
| 15 | 2 Normative references 3 Terms and definitions |
| 16 | 4 Measurement of Sound Attenuation of Hearing Protectors 5 Noise Level Reduction Statistic for Use with A-Weighting (NRSA 5.1 Introduction 5.2 Calculation |
| 18 | 5.3 Application |
| 19 | 6 Noise Level Reduction Statistic, Graphical (NRSG 6.1 Introduction 6.2 Calculation |
| 21 | 6.3 Application |
| 22 | 7 Octave-Band Method 7.1 Introduction 7.2 Calculation |
| 23 | 7.3 Application |
| 25 | Annex A (normative) Noise Spectra Used in Calculating the NRSA and NRSG |
| 30 | Annex B (informative) Spreadsheet Illustrating Calculation and Use of the NRSA and NRSG |
| 33 | Annex C (informative) Example of the Calculation of the Assumed Protection Values and the Use of the Octave-Band Method |
| 34 | Annex D (informative) Calculation of the Confidence Interval for the NRSA80 |
| 39 | Bibliography |
