G - Physics – 10 – L
Patent
G - Physics
10
L
G10L 19/12 (2006.01) G10L 19/00 (2006.01)
Patent
CA 2170007
A speech signal coding apparatus includes a dividing section for dividing a speech signal into units of sub-frames. A spectrum parameter sectioncalculates a spectrum parameter for each sub-frame. An error signal generating section generates a perceptual sensitivity weighted error signal from a reproduction signal and the speech signal for a sub-frame. An adaptive code book is referred to based on the perceptual sensitivity weighted error signal sothat an adaptive code vector and a pitch period is selected. Also, an excitation code book is referred to based on the perceptual sensitivity weighted error signal so that an excitation code vector is selected. In a gain code vector section having a gain code book which stores gain code vectors, a gain code book is referred to based on the perceptual sensitivity weighted error signal, so that again code vector is selected. Gains are determined from the selected gain code vector in units of time intervals shorter than the sub-frame, and a reproductionsignal is generated by weighting the adaptive code vector and excitation code vector with the determined gains within units of the time intervals.
Corporation Nec
G. Ronald Bell & Associates
LandOfFree
Determination of gain for pitch period in coding of 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 Determination of gain for pitch period in coding of speech..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Determination of gain for pitch period in coding of speech... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1744738