Method and device for determining the quality of a speech...

Details Method and device for determining the quality of a speech... Method and device for determining the quality of a speech...

2002-03-01

2009-11-24

Dorvil, Richemond (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S224000, C704S226000

Reexamination Certificate

active

07624008

ABSTRACT:
Methods and devices for objectively predicting perceptual quality of speech signals degraded in a speech processing/transporting system which may have poor prediction results for degraded signals including extremely weak or silent portions. Improvement is achieved by applying a first scaling step in a pre-processing stage with a first scaling factor which is a function of a reciprocal value of power of the output signal increased by an adjustment value, and by a second scaling step with a second scaling factor which is substantially equal to the first scaling factor raised to an exponential value and with an adjustment value between zero and one. The second scaling step may be performed at various locations in the device. The adjustment values are adjusted using test signals with well-defined subjective quality scores.

REFERENCES:
patent: 5345535 (1994-09-01), Doddington
patent: 6041294 (2000-03-01), Beerends
patent: 6232965 (2001-05-01), Scott et al.
patent: 6246345 (2001-06-01), Davidson et al.
patent: 6271771 (2001-08-01), Seitzer et al.
patent: 6308150 (2001-10-01), Neo et al.
patent: 6594307 (2003-07-01), Beerends
patent: 6940987 (2005-09-01), Claesson
patent: 6975671 (2005-12-01), Sindhushayana et al.
patent: 7013266 (2006-03-01), Berger
patent: 7016814 (2006-03-01), Beerends et al.
patent: 7027982 (2006-04-01), Chen et al.
patent: 7143030 (2006-11-01), Chen et al.
patent: 7146313 (2006-12-01), Chen et al.
patent: 7155383 (2006-12-01), Chen et al.
patent: 7197452 (2007-03-01), Hands
patent: 7240001 (2007-07-01), Chen et al.
patent: 7313517 (2007-12-01), Beerends et al.
patent: 7366663 (2008-04-01), Beerends et al.
patent: 7426466 (2008-09-01), Ananthapadmanabhan et al.
patent: 2002/0193999 (2002-12-01), Keane et al.
patent: 2003/0055608 (2003-03-01), Beerends et al.
John Anderson, “Methods for Measuring Perceptual Speech Quality”, Agilent Technologies, Network Systems Test Division, Mar. 1, 2001, pp. 1-34.

Affiliated with

Also associated with

Rating

Method and device for determining the quality of a speech... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and device for determining the quality of a speech..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for determining the quality of a speech... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4099022