Title :
An iterative interpolative transform method for modeling harmonic magnitudes
Author :
Ramabadran, Tenkasi ; Smith, Aaron ; Jasiuk, M.
Author_Institution :
Motorola Labs., Schaumburg, IL, USA
Abstract :
In this paper, we describe a method for modeling speech harmonic magnitudes, the accurate representation of which is essential for high quality speech synthesis in several parametric vocoders. The given set of harmonic magnitudes is interpolated and transformed into the auto-correlation domain before an all-pole model is derived. Through an iterative procedure, the interpolation curve used in the frequency domain is improved. This new iterative, interpolative, transform (IIT) method has been found to model the harmonic magnitudes more accurately than earlier methods when measured in terms of log-spectral distortion.
Keywords :
frequency-domain analysis; harmonic analysis; interpolation; iterative methods; parameter estimation; speech coding; speech synthesis; vocoders; all-pole model; auto-correlation domain; frequency domain; high quality speech synthesis; iterative interpolative transform method; log-spectral distortion; parametric vocoders; speech harmonic magnitudes modeling; Distortion measurement; Frequency domain analysis; Harmonic distortion; Interpolation; Iterative methods; Predictive models; Quantization; Sampling methods; Speech synthesis; Vocoders;
Conference_Titel :
Speech Coding, 2002, IEEE Workshop Proceedings.
Print_ISBN :
0-7803-7549-1
DOI :
10.1109/SCW.2002.1215716
