Removal of Long Pulses from Audio Signals Using Two-pass Split-window Filtering

Esquef PAA, Biscainho LWP, Valimaki V, Karjalainen M. Removal of Long Pulses from Audio Signals Using Two-pass Split-window Filtering. In: AES Convention 112. Audio Engineering Society; 2002. Paper 5535. Available from: https://aes.org/publications/elibrary-page/?id=11348

@inproceedings{Esquef2002_11348,
  author = {Esquef, Paulo A. A. and Biscainho, Luiz Wagner Pereira and Valimaki, Vesa and Karjalainen, Matti},
  title = {{Removal of Long Pulses from Audio Signals Using Two-pass Split-window Filtering}},
  booktitle = {AES Convention 112},
  note = {Paper 5535},
  year = {2002},
  month = apr,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=11348}
}

TY  - CPAPER
TI  - Removal of Long Pulses from Audio Signals Using Two-pass Split-window Filtering
AU  - Esquef, Paulo A. A.
AU  - Biscainho, Luiz Wagner Pereira
AU  - Valimaki, Vesa
AU  - Karjalainen, Matti
T2  - AES Convention 112
M1  - Paper 5535
PY  - 2002
DA  - 2002/04/06
UR  - https://aes.org/publications/elibrary-page/?id=11348
PB  - Audio Engineering Society
LA  - en
AB  - This paper addresses the restoration of audio signals proceeding from old recordings, and focuses on long-pulse removal. We propose a new two-stage method to estimate the waveform of each long pulse from the observed noisy signal. First, an initial estimate for the pulse shape is obtained via a non-linear filtering scheme called two-pass splitting-window (TPSW) filtering. Then, this estimate is further smoothed through a piecewise polynomial fitting. The degree of smoothness of the estimate can be controlled by adjusting either the TPSW parameters or the length of the segments to be fitted. The proposed method has low computational complexity, it is not constrained by the assumption of shape similarity among pulse waveforms, and can be successfully applied for removing overlapping pulses.
ER  -