Name
Title | ||
|---|---|---|
Spectral-envelope and group-delay models for transient signals —Applications to castanets and stop consonants |
Abstract | ||
|---|---|---|
We present a novel approach to represent transients using spectral-domain amplitude-modulated/frequency -modulated (AM-FM) functions. The model is applied to the real and imaginary parts of the Fourier transform (FT) of the transient. The suitability of the model lies in the observation that since transients are well-localized in time, the real and imaginary parts of the Fourier spectrum have a modulation structure. The spectral AM is the envelope and the spectral FM is the group delay function. The group delay is estimated using spectral zero-crossings and the spectral envelope is estimated using a coherent demodulator. We show that the proposed technique is robust to additive noise. We present applications of the proposed technique to castanets and stop-consonants in speech. |
Year | DOI | Venue |
|---|---|---|
2011 | 10.1109/ICASSP.2011.5946455 | Acoustics, Speech and Signal Processing |
Keywords | Field | DocType |
Fourier transforms,amplitude modulation,audio signal processing,demodulators,frequency modulation,spectral analysis,spectral-domain analysis,speech processing,Fourier spectrum,Fourier transform,additive noise,castanets,coherent demodulator,frequency modulated function,group delay estimation,group delay function,modulation structure,spectral AM envelope,spectral FM,spectral domain amplitude modulated function,spectral zero-crossing envelope,stop consonant,transient signal,AM-FM model,coherent demodulation,group delay estimation,spectra-domain zero-crossings,spectral envelope | Demodulation,Speech processing,Computer science,Fourier transform,Artificial intelligence,Spectral envelope,Pattern recognition,Signal-to-noise ratio,Algorithm,Group delay and phase delay,Speech recognition,Amplitude modulation,Frequency modulation | Conference |
ISSN | ISBN | Citations |
1520-6149 E-ISBN : 978-1-4577-0537-3 | 978-1-4577-0537-3 | 0 |
PageRank | References | Authors |
0.34 | 2 | 2 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Ravi R. Shenoy | 1 | 6 | 2.14 |
| Chandra Sekhar Seelamantula | 2 | 48 | 7.95 |