Title :
Smart copying-a new approach to reconstruction of audio signals
Author :
Cisowski, Krzyszt Of ; Niedzwiecki, Maciej
Author_Institution :
Fac. of Electron., Telecommun. & Comput. Sci., Tech. Univ. Gdansk, Poland
Abstract :
The paper presents a new approach to reconstruction of audio signals. First, a general reconstruction formula is derived allowing one to estimate unknown samples from the known (neighboring) ones. Then it is shown that the unknown excitation appearing in the analytical reconstruction formula can be replaced with the natural excitation waveform extracted from the available portions of the signal
Keywords :
Kalman filters; Toeplitz matrices; audio signal processing; autoregressive processes; covariance matrices; maximum likelihood estimation; recursive estimation; recursive filters; signal reconstruction; time series; Toeplitz matrix; audio time series; autoregressive with mixed excitation model; covariance defect; cross-fading; maximum likelihood method; natural excitation waveform; reconstruction of audio signals; recursive reconstruction; smart copying; speech signal; unknown excitation; unknown samples estimation; variable-order Kalman filter; Acoustic noise; Computer science; Digital signal processing; Fading; Implants; Signal analysis; Signal processing; Speech enhancement; Speech synthesis; White noise;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.779942
