1 Introduction
2
Instrumentation
2.1 Artificial ear
2.2 Artificial voice
2.3 Electrical termination
2.4 Electrical signal source
2.5 Recording and measurement system
2.6 Diffuse room noise source
3
Measurements
3.1 Send loudness rating (SLR)
3.2 Receive loudness rating (RLR)
3.3 Sidetone masking rating (STMR) (Talker Sidetone)
3.4 Listener sidetone rating (LSTR)
3.5 Overall
loudness rating (OLR) [Overall Send + Receive (OSR)]
3.6 JLR Junction loudness rating