Author:
Feldkord Sven,Reit Marco,Mathis Wolfgang
Abstract
Abstract. Recently, nonlinear amplifiers based on the supercritical Andronov–Hopf bifurcation have become a focus of attention, especially in the modeling of the mammalian hearing organ. In general, to gain deeper insights in the input-output behavior, the analysis of bifurcation based amplifiers requires a flexible framework to exchange equations and adjust certain parameters. A DSP implementation is presented which is capable to analyze various amplifier systems. Amplifiers based on the Andronov–Hopf and Neimark–Sacker bifurcations are implemented and compared exemplarily. It is shown that the Neimark–Sacker system remarkably outperforms the Andronov–Hopf amplifier regarding the CPU usage. Nevertheless, both show a similar input-output behavior over a wide parameter range. Combined with an USB-based control interface connected to a PC, the digital framework provides a powerful instrument to analyze bifurcation based amplifiers.
Reference10 articles.
1. Eguíluz, V. M., Ospeck, M., Choe, Y., Hudspeth, A., and Magnasco, M. O.: Essential Nonlinearities in Hearing, Phys. Rev. Lett., 84, 5232–5235, https://doi.org/10.1103/PhysRevLett.84.5232, 2000.
2. Geisler, C. D.: From Sound to Synapse: Physiology of the Mammalian Ear, Oxford University Press, 1998.
3. Gold, T.: Hearing. II. The Physical Basis of the Action of the Cochlea, Proc. R. Soc. B, 135, 492–498, 1948.
4. Kemp, D. T.: Stimulated Acoustic Emissions from Within the Human Auditory System, J. Acoust. Soc. Am., 64, 1386–1391, 1978.
5. Kuznetsov, Y. A.: Elements of Applied Bifurcation Theory, vol. 112, Springer Science & Business Media, 2013.
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献