2D-spectral estimation based on DCT and modified magnitude group delay
نویسندگان
چکیده
منابع مشابه
Improved Wigner-Ville distribution performance based on DCT/DFT harmonic wavelet transform and modified magnitude group delay
A new Wigner-Ville Distribution (WVD) estimation is proposed. This improved and efficient WVD is based on Signal Decomposition (SD) by DCT or DFT Harmonic Wavelet Transform (DCTHWT or DFTHWT) and the Modified Magnitude Group Delay (MMGD). The MMGD processing can be either in fullband or subband. The SD by DCTHWT provides better quality low leakage decimated subband components. The concatenation...
متن کاملImproved Estimation of Evolutionary Spectrum based on Short Time Fourier Transforms and Modified Magnitude Group Delay by Signal Decomposition
A new estimator for evolutionary spectrum (ES) based on short time Fourier transform (STFT) and modified group delay function (MGDF) by signal decomposition (SD) is proposed. The STFT due to its built-in averaging, suppresses the cross terms and the MGDF preserves the frequency resolution of the rectangular window with the reduction in the Gibbs ripple. The present work overcomes the magnitude ...
متن کاملModified Group Delay Based MultiPitch Estimation in Co-Channel Speech
Phase processing has been replaced by group delay processing for the extraction of source and system parameters from speech. Group delay functions are ill-behaved when the transfer function has zeros that are close to unit circle in the z-domain. The modified group delay function addresses this problem and has been successfully used for formant and monopitch estimation. In this paper, modified ...
متن کاملEstimation of evolutionary spectrum based on short time Fourier transform and modified group delay
This paper proposes a new estimator for evolutionary spectrum (ES) based on short time Fourier transform (STFT) and modified group delay function (GDFM). The STFT due to its built-in averaging suppresses the crossterms and the GDFM preserves the frequency resolution of the rectangular window as it reduces the Gibbs ripple without using any window function. The new estimator is applicable to ran...
متن کاملImproved phase estimation based on complete bispectrum and modified group delay
In this paper, a new method for extracting the system phase from the bispectrum of the system output has been proposed. This is based on the complete bispectral data computed in the frequency domain and modified group delay. The frequency domain bispectrum computation improves the frequency resolution and the modified group delay reduces the variance preserving the frequency resolution. The use...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Signal, Image and Video Processing
سال: 2012
ISSN: 1863-1703,1863-1711
DOI: 10.1007/s11760-011-0286-9