Efficient Design of the Oversampling Filter for Digital Audio Applications

Sun MT, Wu L. Efficient Design of the Oversampling Filter for Digital Audio Applications. In: AES Convention 81. Audio Engineering Society; 1986. Paper 2378. Available from: https://aes.org/publications/elibrary-page/?id=5052

@inproceedings{Sun1986_5052,
  author = {Sun, M. T. and Wu, L.},
  title = {{Efficient Design of the Oversampling Filter for Digital Audio Applications}},
  booktitle = {AES Convention 81},
  note = {Paper 2378},
  year = {1986},
  month = nov,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=5052}
}

TY  - CPAPER
TI  - Efficient Design of the Oversampling Filter for Digital Audio Applications
AU  - Sun, M. T.
AU  - Wu, L.
T2  - AES Convention 81
M1  - Paper 2378
PY  - 1986
DA  - 1986/11/06
UR  - https://aes.org/publications/elibrary-page/?id=5052
PB  - Audio Engineering Society
LA  - en
AB  - In digital audio systems, the digital-to-analog (D/A) converter as well as the lowpass filter play an important role. Current trend of implementing the filter uses digital oversampling (or interpolating) filter rather a pure analog filter due to the better performance and the ease of integration in VLSI. However, the direct implementation of the digital oversampling filters usually requires very high order FIR filters to achieve the desired specification. Such a high order filter requires high speed circuitry to perform the multiplications. In this paper, we show that by utilizing the property of half-band filters and a two-stage implementation, the order of the oversampling filter which operating at an oversampling factor of 4 can be reduced and hence the required computation and memory can also be cut down significantly.
ER  -