Harmonic and Intermodulation Analysis of Nonlinear Devices Used in Virtual Bass Systems

Gan WS, Oo N. Harmonic and Intermodulation Analysis of Nonlinear Devices Used in Virtual Bass Systems. In: AES Convention 124. Audio Engineering Society; 2008. Paper 7403. Available from: https://aes.org/publications/elibrary-page/?id=14533

@inproceedings{Gan2008_14533,
  author = {Gan, Woon-Seng and Oo, Nay},
  title = {{Harmonic and Intermodulation Analysis of Nonlinear Devices Used in Virtual Bass Systems}},
  booktitle = {AES Convention 124},
  note = {Paper 7403},
  year = {2008},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14533}
}

TY  - CPAPER
TI  - Harmonic and Intermodulation Analysis of Nonlinear Devices Used in Virtual Bass Systems
AU  - Gan, Woon-Seng
AU  - Oo, Nay
T2  - AES Convention 124
M1  - Paper 7403
PY  - 2008
DA  - 2008/05/06
UR  - https://aes.org/publications/elibrary-page/?id=14533
PB  - Audio Engineering Society
LA  - en
AB  - Nonlinear devices (NLD) are used in the virtual bass system. NLD generates harmonics which in turn create the pitch perception and are used in the audio bass enhancement systems using psychoacoustics. This paper presents the mathematical derivations and analyses of five different NLD devices, together with intermodulation analysis of harmonics generated by these NLDs. The five NLDs are half-wave rectifier, full-wave rectifier, square wave, polynomial function and exponential function. The derivation of harmonic analysis equations are based on Fourier Theorems, Chebyshev Polynomials, and Taylor Series expansions. Besides the harmonics, intermodulation components are also resulted from NLDs. Both mathematical analysis and simulation results are presented for the intermodulation effects of harmonics generated by NLDs.
ER  -