Quality assessment tool

Details Quality assessment tool Quality assessment tool

2004-06-07

2008-07-29

Vo, Huyen X. (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Application

C704S207000, C704S205000

Reexamination Certificate

active

07406419

ABSTRACT:
This invention relates to a new parameter suitable for use in non-intrusive speech quality assessment system. The invention provides a method of generating a parameter from a signal comprising a sequence of values measured from voiced portions of said signal at a sampling frequency, said parameter suitable for use in a quality assessment tool. The method includes steps of selecting portions of frequency transformed sections of the signal in dependence upon a pitch estimate; generating an average value for each portion; and generating a section parameter depending upon the difference between the averages of successive portions. Said section parameter is averaged over a number of iterations of the method to generate the new parameter of the invention.

REFERENCES:
patent: 6330428 (2001-12-01), Lewis et al.
patent: 2003/0115515 (2003-06-01), Curtis et al.
patent: 01/35393 (2001-05-01), None

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