IEEE 661 : 1979
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
METHOD FOR DETERMINING OBJECTIVE LOUDNESS RATINGS OF TELEPHONE CONNECTIONS
17-10-2023
01-01-1979
1. Introduction
2. Scope and Purpose
3. Definitions
4. References
5. Instrumental Method
5.1 General
5.2 Test Equipment
5.3 Measuring System
5.4 Calibration
5.5 Test Procedure
6. Computational Method
Annex A Loudness Rating Method (Informative)
Annex B Weighted Acoustic Source Signal (Informative)
Annex C Weighted Electrical Source Signal (Informative)
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