🔥🔥 Don’t Miss Out on Our End of Autumn Sale. If you have any questions, feel free to click the bottom right corner to contact our customer service..

Concat us[email protected]
Shopping Cart

No products in the cart.

🔍
ASA S3.1 1999 R2018

ASA S3.1 1999 R2018

$59.58

ANSI/ASA S3.1-1999 (R2018) American National Standard Maximum Permissible Ambient Noise Levels for Audiometric Test Rooms

Published By Publication Date Number of Pages
ASA 1999 30
PDF Format Searchable Printable Preview Now
Guaranteed Safe Checkout
Category:

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

None

PDF Catalog

PDF Pages PDF Title
9 1 Scope, purpose, and applications
10 2 References
3 Definitions of terms
12 4 Recommended ambient noise levels and measurements
Tables
1 Ears Covered: Octave band MPANLs for supra-aural earphones
and for insert earphones for three test frequency ranges; in dB
re: 20 mPa to nearest 0.5 dB
13 2 Ears Covered: One-third octave band MPANLs for supra-aural
earphones and for insert earphones for three test frequency
ranges; in dB re: 20 mPa to the nearest 0.5 dB
3 Ears Not Covered: Octave and one-third octave band MPANLs
for three test frequency ranges; in dB re: 20 mPa to the nearest
0.5 dB
15 5 Compliance with Standard
16 Annexes
A Derivation of ambient noise levels
17 A.1 Derivation of the MPANLs for ears not covered and ears covered
using a supra-aural earphone and insert earphone for the test
frequency range 125 to 8000 Hz as reported in tables 1–3.
Values in parentheses are interpolated or extrapolated from
existing data
18 A.2 Average standard deviations of the attenuation provided by a
supra-aural and insert earphone. Values in parentheses are
interpolated or extrapolated from existing data
19 B Present compared with previous (1991) ambient noise levels
B.1 Differences between the present and the 1991 octave band
MPANLs for ears covered and ears not covered for each test
frequency range; in dB re: 20 mPa to the nearest 0.5 dB
20 C Interim low frequency ambient noise levels
B.2 Differences between the present and the 1991 one-third octave
band MPANLs for ears covered and ears not covered for each
test frequency range; in dB re: 20 mPa to the nearest 0.5 dB
21 D High frequency ambient noise levels
C.1 Ears Covered: Interim octave band MPANLs using a supraaural
and insert earphone for each test frequency range; in dB
re: 20 mPa to the nearest 0.5 dB
C.2 Ears Covered: Interim one-third octave band MPANLs using a
supra-aural and insert earphone for each test frequency range;
in dB re: 20 mPa to the nearest 0.5 dB
C.3 Ears Not Covered: Interim octave and one-third octave band
MPANLs for each test frequency range; in dB re: 20 mPa to the
nearest 0.5 dB
22 E Techniques for physical measurement
23 F Passive noise-reducing enclosures
G General considerations in the planning of an audiometric
test room

Related products

ASA S3.1 1999 R2018
$59.58