![header thumbnail](/images/img-default-logo.png)
MIL-STD-1621 Revision A:1973
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
![header thumbnail](/images/img-default-logo.png)
ACOUSTICAL AND VIBRATIONAL STANDARD REFERENCE QUANTITIES
05-10-1995
Specifies reference quantities used to describe all acoustical and vibrational quantities expressed in terms of levels. Defines acoustical terms and recommends the plotting format for acoustical measurements
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.