An Efficient Algorithm for the Restoration of Audio Signals Corrupted with Low-Frequency Pulses

Esquef PAA, Biscainho LWP, Välimäki V. An Efficient Algorithm for the Restoration of Audio Signals Corrupted with Low-Frequency Pulses. J Audio Eng Soc. 2003;51(6):502-517. Available from: https://aes.org/publications/elibrary-page/?id=12221

@article{Esquef2003_12221,
  author = {Esquef, Paulo A. A. and Biscainho, Luiz W. P. and Välimäki, Vesa},
  title = {{An Efficient Algorithm for the Restoration of Audio Signals Corrupted with Low-Frequency Pulses}},
  journal = {Journal of the Audio Engineering Society},
  volume = {51},
  number = {6},
  pages = {502--517},
  year = {2003},
  month = jun,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=12221}
}

TY  - JOUR
TI  - An Efficient Algorithm for the Restoration of Audio Signals Corrupted with Low-Frequency Pulses
AU  - Esquef, Paulo A. A.
AU  - Biscainho, Luiz W. P.
AU  - Välimäki, Vesa
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 51
IS  - 6
SP  - 502
EP  - 517
PY  - 2003
DA  - 2003/06/06
UR  - https://aes.org/publications/elibrary-page/?id=12221
PB  - Audio Engineering Society
LA  - en
AB  - Digital audio restoration of old recordings is addressed, with a focus on the removal of long pulses with low-frequency content. The main drawback of the state-of-the-art method, which is based on the separation of autoregressive (AR) processes, is its high computational complexity. A method is proposed in which the pulse tails are first estimated via a nonlinear scheme called two-pass split-window (TPSW) filtering, followed by a polynominal smoothing stage. After removing the tail of each pulse by subtraction, the remaining initial clicks are suppressed through a model-based declicking algorithm. The proposed procedure is as effective for pulse removal as the AR-based method but has a substantially lower computational complexity. Moreover, from a user point of view, its processing parameters are more intuitive and easier to adjust.
ER  -