Title :
Time variant spectral factorization for quality improvement of synthesised speech
Author :
Farsi, Hassan ; Mozaffarian, M.A.
Author_Institution :
Dept. of Electron. & Electr. Eng., Islamic Azad Univ., Birjand, Iran
Abstract :
An adaptive time-domain postfiltering technique based on the synthesis LP filter factorisation is proposed. Information is gathered about the relation between the LP filter poles and formants for this factorisation. This technique shapes the main formant differently from the other formants. Pole locations representing the main formant are modified and optimum shaping constants for each formant are searched to make more narrower main formant bandwidth while maintaining other formant information and more attenuation in valley regions.
Keywords :
adaptive filters; filtering theory; quality management; speech synthesis; time-domain analysis; adaptive time-domain postfiltering technique; formant frequencies; speech synthesis; synthesis LP filter factorisation; time variant spectral factorization; Adaptive filters; Attenuation; Electronic mail; Information filtering; Linear predictive coding; Noise reduction; Power harmonic filters; Quantization; Speech synthesis; Time domain analysis; LPC filter; Spectral shaping; Synthesis filter; formant frequencies;
Conference_Titel :
Computer Science and Information Technology, 2009. ICCSIT 2009. 2nd IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-4519-6
Electronic_ISBN :
978-1-4244-4520-2
DOI :
10.1109/ICCSIT.2009.5234637
