Title :
Tolerance of FO adaptive time-frequency analysis for spectrographic representations
Author :
Kawahara, Hideki ; Morise, Masanori
Author_Institution :
Fac. of Syst. Eng., Wakayama Univ., Wakayama, Japan
Abstract :
Spectrogram is a substrate for wide range of speech technologies. However, overlaid excitation information and response information make it difficult to extract and manipulate perceptually or physiologically relevant attributes directly. An F0 adaptive procedure to remove locally periodic time-frequency structures from STFT (short term Fourier transform) based spectrographic representations enabled flexible manipulation of such attributes. The procedure is called TANDEM-STRAIGHT and is currently used in various applications. This article introduces tolerance of such representation to F0 estimation errors and outlines an alternative design of TANDEM-STRAIGHT.
Keywords :
adaptive signal processing; speech processing; time-frequency analysis; Fo adaptive time-frequency analysis; STFT; attributes; spectrogram; spectrograph representation; speech technology; Estimation error; Frequency domain analysis; Smoothing methods; Spectral analysis; Speech; Speech processing; periodicity; source filter model; spectrogram; speech modifications;
Conference_Titel :
Signal Processing (ICSP), 2010 IEEE 10th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-5897-4
DOI :
10.1109/ICOSP.2010.5655859
