Error Correction in Audio Amplifiers

Danyuk D, Pilko G. Error Correction in Audio Amplifiers. J Audio Eng Soc. 1996;44(9):721-728. Available from: https://aes.org/publications/elibrary-page/?id=7886

@article{Danyuk1996_7886,
  author = {Danyuk, Dimitri and Pilko, George},
  title = {{Error Correction in Audio Amplifiers}},
  journal = {Journal of the Audio Engineering Society},
  volume = {44},
  number = {9},
  pages = {721--728},
  year = {1996},
  month = sep,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=7886}
}

TY  - JOUR
TI  - Error Correction in Audio Amplifiers
AU  - Danyuk, Dimitri
AU  - Pilko, George
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 44
IS  - 9
SP  - 721
EP  - 728
PY  - 1996
DA  - 1996/09/06
UR  - https://aes.org/publications/elibrary-page/?id=7886
PB  - Audio Engineering Society
LA  - en
AB  - Many existing audio amplifiers employ various error-correction techniques somewhat different from ordinary feedback. Out of these techniques two generalized error-correction structures might be singled out, each consisting of main and auxiliary channels. The subsidiary amplifier operates with an error signal caused by the departure of the main path from its desired value. Transfer functions, sensitivities of overall gain to changes, and stability criteria are determined separately for each error-correction structure. It is shown that, except for genuine feedforward, other topologies have no advantages over ordinary feedback as far as sensitivity to changes in the main amplifier are concerned. Feedforward frequency compensation is considered as a specific example of an error-correction structure with active error feedback. The aspects of the feedforward compensation by means of parallel summing are discussed in detail.
ER  -