Accession Number:

AD0692803

Title:

DEVELOPMENT OF A SMALL MICROPHONE SUITABLE FOR USE IN A NEW, SMALL, LIGHT-WEIGHT, ORAL-NASAL BREATHING OXYGEN MASK.

Descriptive Note:

Final engineering rept. on task 3,

Corporate Author:

BALDWIN PIANO CO CINCINNATI OHIO

Personal Author(s):

Report Date:

1957-11-01

Pagination or Media Count:

83.0

Abstract:

A noise cancelling microphone was partially developed for use in aircraft oxygen masks. Several types of microphones were studied and examined. Various models were constructed and analyzed. Some word articulation testing was conducted and some preliminary environmental tests were made. Author

Subject Categories:

  • Electrical and Electronic Equipment
  • Life Support Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE