Method and apparatus for non-intrusive single-ended voice...

Details Method and apparatus for non-intrusive single-ended voice... Method and apparatus for non-intrusive single-ended voice...

2005-06-15

2010-06-01

Ngo, Ricky (Department: 2464)

Multiplex communications

Diagnostic testing

Determination of communication parameters

C370S230000, C370S352000, C370S253000

Reexamination Certificate

active

07729275

ABSTRACT:
An apparatus (1240), method, and computer program to assess VoIP speech quality (130) using access to degraded signals. Different types of impairment (110) have different effect on speech quality. Preferred embodiments address two distinct types of impairment that are unique to VoIP: packet loss (230) and speech clipping in time (850).

REFERENCES:
patent: 4663748 (1987-05-01), Karbowiak et al.
patent: 6504838 (2003-01-01), Kwan
patent: 6798745 (2004-09-01), Feinberg
patent: 2002/0061012 (2002-05-01), Thi et al.
patent: 2004/0160979 (2004-08-01), Pepin et al.
patent: 2005/0052996 (2005-03-01), Houck et al.

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