A Method for Envelope Warping in Digital Audio Synthesis

Maher RC. A Method for Envelope Warping in Digital Audio Synthesis. J Audio Eng Soc. 1991;39(12):934-944. Available from: https://aes.org/publications/elibrary-page/?id=5954

@article{Maher1991_5954,
  author = {Maher, Robert C.},
  title = {{A Method for Envelope Warping in Digital Audio Synthesis}},
  journal = {Journal of the Audio Engineering Society},
  volume = {39},
  number = {12},
  pages = {934--944},
  year = {1991},
  month = dec,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=5954}
}

TY  - JOUR
TI  - A Method for Envelope Warping in Digital Audio Synthesis
AU  - Maher, Robert C.
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 39
IS  - 12
SP  - 934
EP  - 944
PY  - 1991
DA  - 1991/12/06
UR  - https://aes.org/publications/elibrary-page/?id=5954
PB  - Audio Engineering Society
LA  - en
AB  - The use of stored envelope functions is common to many audio signal synthesis techniques. This table lookup method is susceptible to audible defects in the synthesized output if care is not taken in the design of the synthesis algorithm, particularly when the rate at which values from the envelope table are accessed is to vary with time. A useful strategy is presented for altering the effective lookup rate for a stored envelope function in order to minimize audible discontinuities between envelope segments with differing lookup rates. The approach creates a smooth warping of the stored envelope function by forcing the envelope lookup index (the envelope phase) to vary according to a cubic polynomial function with matched transitions from envelope segment to segment.
ER  -