Title :
High-quality prosodic modification of speech signals
Author_Institution :
Comput. Eng. & Networks Lab., Eidgenossische Tech. Hochschule, Zurich, Switzerland
Abstract :
The aim of the work was to develop a procedure that allows prosodic modifications of speech signals without impairing the quality. The developed procedure is based on the Fourier analysis/synthesis technique with several improvements on the analysis side, such as the analysis of signals with rapidly changing F0 and the analysis of weak spectral components. Also for the modification of the short time spectrum and for the reconstruction of the speech signal some new methods have been introduced. The most important one, in terms of speech quality, is the method of phase compensation that limits the absolute time shift to half the pitch period. The developed procedure is used in our high quality text to speech synthesis system that is based on concatenation of prosodically modified diphones
Keywords :
Fourier analysis; natural languages; signal reconstruction; speech processing; speech synthesis; Fourier analysis/synthesis technique; absolute time shift; high quality prosodic modification; high quality text to speech synthesis system; phase compensation; pitch period; prosodically modified diphone concatenation; rapidly changing F0; short time spectrum; signal analysis; speech quality; speech signals; weak spectral components; Computer networks; Fourier transforms; Frequency estimation; Laboratories; Network synthesis; Signal analysis; Signal processing; Signal synthesis; Speech processing; Speech synthesis;
Conference_Titel :
Spoken Language, 1996. ICSLP 96. Proceedings., Fourth International Conference on
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-3555-4
DOI :
10.1109/ICSLP.1996.607304
