The Design of a Low Cost Sound Level Meter.

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)

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1974
Accession Number
AD0783808

Entities

People

  • John D. Griffiths

Organizations

  • United States Air Force Academy

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplifiers
  • Circuits
  • Construction
  • Electrets
  • Energy Consumption
  • Integrated Circuits
  • Microphones
  • Operational Amplifiers
  • Precision
  • Specifications
  • Standards

Readers

  • Acoustics.
  • Systems Analysis and Design