Title :
Formant extraction from phase using weighted group delay function
Author :
Murthy, Hema A. ; Madhu Murthy, K.V. ; Yegnanarayana, B.
Author_Institution :
Dept. of Comput. Sci. & Eng., Indian Inst. of Technol., Madras, India
Abstract :
A method to extract formants from Fourier transform (FT) phase using a group delay (GD) function is presented. The GD function of the speech signal is difficult to process owing to the presence of large amplitude spikes. The spikes are de-emphasised by modifying the expression for computing the GD function, which facilitates formant extraction.
Keywords :
Fourier transforms; speech analysis and processing; Fourier transform phase; formant extraction; large amplitude spikes; speech signal; weighted group delay function;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19891080
