REFERENCES
53
14.
Relate VU to dBm for a simple sinusoidal signal. Relate VU to dBm for a complex
signal such as human voice.
15.
Echo as an annoyance to a telephone listener varies with two typical causes. What
are they? What is the most important (most annoying)?
REFERENCES
1. Effect of Transmission Impairments, ITU-T Rec. P.11, ITU Helsinki, Mar. 1993.
2. Loudness Ratings on National Systems, ITU-T Rec. G.121, ITU Helsinki, Mar, 1993.
3. R. L. Freeman, Telecommunication System Engineering, 4th ed., Wiley, New York, 2004.
4. R. L. Freeman, Telecommunication Transmission Handbook, 4th ed., Wiley, New York, 1998.
Summary :
Freeman, Telecommunication System Engineering, 4th ed., Wiley, New York, 2004. Freeman, Telecommunication Transmission Handbook, 4th ed., Wiley, New York, 1998.
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