Main Title |
The design of a low cost sound level meter / |
Author |
Griffiths, John D.
|
CORP Author |
Air Force Academy Colo;Environmental Protection Agency, Washington, D.C. Office of Noise Abatement and Control. |
Publisher |
Dean of the Faculty, United States Air Force Academy ; Available from National Technical Information Service, |
Year Published |
1974 |
Report Number |
USAFA-TR-74-6; EPA-550/9-74-008; AD783808 |
Stock Number |
AD-783 808/9 |
OCLC Number |
04949437 |
Subjects |
Noise--Measurement
|
Additional Subjects |
Measuring instruments ;
Sound ;
Noise ;
Acoustic measurement ;
Sound level meters
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EJBD |
EPA 550-9-74-008 |
|
Headquarters Library/Washington,DC |
01/30/2020 |
ELBD F |
AD 783 808 |
|
AWBERC Library/Cincinnati,OH |
12/18/1998 |
ELBD ARCHIVE |
EPA 550-9-74-008 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
ESAD |
EPA 550-9-74-008 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
NTIS |
AD-783 808/9 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
42 pages : illustrations ; 27 cm |
Abstract |
Conventional sound level meters generally use precision ceramic microphones and discrete solid state circuitry. This report describes a design using an electret microphone and integrated circuit operational amplifiers. The advantages of this design are low cost, ease of manufacture, stable gain, and low power consumption. Construction details are included to permit local manufacture. The complete instrument is capable of meeting the Type 2, General Purpose Sound Level Meter, requirements of ANSI S1.4-1971, American National Standard Specification for Sound Level Meters. (Author) |
Notes |
"EPA 550-9-74-008." "April 1974." Cover title. AD 783 808. |
Contents Notes |
Conventional sound level meters generally use precision ceramic microphones and discrete solid state circuitry. This report describes a design using an electret microphone and integrated circuit operational amplifiers. The advantages of this design are low cost, ease of manufacture, stable gain, and low power consumption. Construction details are included to permit local manufacture. The complete instrument is capable of meeting the Type 2, General Purpose Sound Level Meter, requirements of ANSI S1.4-1971, American National Standard Specification for Sound Level Meters. (Author) |
Place Published |
United States Air Force Academy, Colo. Springfield, Va. |
Corp Au Ser Add Ent |
United States Air Force Academy. Technical report - United States Air Force Academy ; 74-6. |
PUB Date Free Form |
1974 |
Series Title Untraced |
Technical report - United States Air Force Academy ; USAFA-TR-74-6 |
NTIS Prices |
PC A03/MF A01 |
BIB Level |
m |
Medium |
unmediated |
Content |
text |
Carrier |
volume |
Cataloging Source |
OCLC/T |
OCLC Time Stamp |
20150605110810 |
Language |
eng |
SUDOCS Number |
D 305.2:So8 |
Origin |
OCLC |
Type |
MERGE |
OCLC Rec Leader |
01308cam 2200325Ii 45020 |