Filter Morphing - Topologies, Signals and Sampling Rates

Clark R, Ifeachor E, Rogers G. Filter Morphing - Topologies, Signals and Sampling Rates. In: AES Convention 113. Audio Engineering Society; 2002. Paper 5661. Available from: https://aes.org/publications/elibrary-page/?id=11248

@inproceedings{Clark2002_11248,
  author = {Clark, Rob and Ifeachor, Emmanuel and Rogers, Glenn},
  title = {{Filter Morphing - Topologies, Signals and Sampling Rates}},
  booktitle = {AES Convention 113},
  note = {Paper 5661},
  year = {2002},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=11248}
}

TY  - CPAPER
TI  - Filter Morphing - Topologies, Signals and Sampling Rates
AU  - Clark, Rob
AU  - Ifeachor, Emmanuel
AU  - Rogers, Glenn
T2  - AES Convention 113
M1  - Paper 5661
PY  - 2002
DA  - 2002/10/06
UR  - https://aes.org/publications/elibrary-page/?id=11248
PB  - Audio Engineering Society
LA  - en
AB  - Digital filter morphing techniques exist to reduce audible transient distortion during filter frequency response change. However, such distortions are heavily dependent on signal content, frequency response settings, filter topology, interpolation scheme, and sampling rates. This paper presents an investigation into these issues, implementing various filter topologies using different input stimuli and filter state change scenarios. The paper identifies the mechanisms causing these distortions, specifying worst case filter state change scenarios. The effects of existing interpolator schemes, finite word length, and system sampling rates on signal distortion are presented. The paper provides an understanding of filter state change, critical in the design of filter morphing algorithms.
ER  -