Title :
Modification of formants in the line spectrum domain
Author :
Morris, Robert W. ; Clements, Mark A.
Author_Institution :
Center for Signal & Image Process., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
A method for modifying formant locations and bandwidths directly in the line spectrum domain is developed. This method is based on first-order approximations between different representations of the linear prediction spectrum and does not require finding the roots of the prediction polynomial. In addition, this method is less sensitive to pole interaction problems associated with direct pole modification.
Keywords :
poles and zeros; polynomial approximation; prediction theory; spectral analysis; speech processing; direct pole modification; first-order approximations; formant bandwidths; formant locations; line spectrum domain; linear prediction spectrum; pole interaction problems; representations; speech; Atmosphere; Bandwidth; Bars; Frequency; Jacobian matrices; Linear predictive coding; Narrowband; Polynomials; Signal processing algorithms; Speech enhancement;
Journal_Title :
Signal Processing Letters, IEEE
