André van Schaik

You can now get the gzipped postscript version of my PhD. thesis. Beware, it's 3.6Meg gzipped and 20Meg gunzipped and about 150 pages long.

Some interesting papers in the different domains of VLSI for auditory perception, can be found on my speech links page.

Audition

I've got the following selected articles online now:

[1] A. van Schaik, E. Fragnière, and E. Vittoz, "Improved Silicon Cochlea using Compatible Lateral Bipolar Transistors," Advances in Neural Information Processing Systems 8, edited by D. Touretzky, et al., MIT press, Cambridge MA, 1996, pp. 671-677.
[2] A. van Schaik and R. Meddis, "The Electronic Ear; Towards a Blueprint," in Torre & Conti (eds), Neurobiology; Ionic Channels, Neurons, and the Brain, Plenum Press, New York and London, 1996, pp. 233-250.
[3] A. van Schaik, E. Fragnière, and E. Vittoz, "An Analogue Electronic Model of Ventral Cochlear Nucleus Neurons," Proceedings of the Fifth International Conference on Microelectronics for Neural Networks and Fuzzy Systems; MicroNeuro '96, IEEE Computer Society Press, Los Alamitos CA, February 1996, pp. 52-59.
[4] A. van Schaik, E. Fragnière, & E. Vittoz, "A Silicon Model of Amplitude Modulation Detection in the Auditory Brainstem," Advances in Neural Information Processing Systems 9, edited by M.C. Mozer, et al., MIT Press, Cambridge MA, 1997, pp. 741-747.
[5] A. van Schaik, E. Fragnière, E. Vittoz, & Ray Meddis, "Analogue VLSI Building Blocks for an Electronic Auditory Pathway" to be presented at the 11th International Symposium on Hearing, Grantham, UK, 1st - 6th August 1997.

[C1] E. Fragnière, A. van Schaik, and E. Vittoz, "Linear Predictive Coding of Speech Using an Analogue Cochlear Model," Proc. of Eurospeech'95, Madrid, Spain, September 1995, vol. 1, pp. 119-122.
[C2] E. Fragnière, A. van Schaik, and E. Vittoz, "Cochlear Linear Predictive Coding: Interfacing an Analogue Cochlear Model with a Conventional Speech Recognition System," in MANTRA Centre for Neuro-Mimetic Systems, 1992-1996 Activity Report, EPFL, Lausanne, Switzerland, January 1996, pp. 105-116.
[C3] E. Fragnière, A. van Schaik, and E. Vittoz, "Design of an Analogue VLSI Model of an Active Cochlea," in Analog Integrated Circuits and Signal Processing, Special Issue on Neuromorphic Engineering, Vol 13, No 1/2, May/June 1997, pp. 19-36.
[C4] E. Fragnière, A. van Schaik, and E. Vittoz, "Experiments with a Model of the Active Cochlea Designed for an Analogue VLSI Implementation," Proceedings of MicroNeuro'97, Dresden, Germany, pp. 154-161, September 24-26, 1997.
[C5] E. Fragnière, A. van Schaik, and E. Vittoz, "Reactive Components for Pseudo-Resistive Networks," Electronics Letters, Vol. 33, nr. 23, pp. 1913-1914, November 6, 1997.

Vision

I have this article I wrote in 1993 for Electronics Letters, while at CSEM working on vision. For some reason they refused it, but I hate to waste the idea. It's on a little circuit, called the "Modulated Resistor", based on Carver Mead's "Horizontal Resistor". The circuit also operates as a non-linear resistor, but it has improved segmentation properties. You can download the postscript version here.

We wrote a paper that presents this Modulated Resistor and other stuff used at CSEM to implement low level vision systems. The reference is:

[1] X. Arreguit, E.A. Vittoz, F.A. van Schaik, and A. Mortara, "Analog Implementation of Low-Level Vision Systems," Proc. of the ECCTD'93, Davos, Sept. 1993, pp. 275-280.

Furthermore, I coautored a paper on the artificial retina I designed at CSEM for Logitechs Trackman Marble TM. The reference is:

[2] X. Arreguit, F.A. van Schaik, F. Bauduin, M. Bidiville, and E. Raeber," A CMOS Motion Detector System for Pointing Devices," presented at ISSCC'96, and to be pulished in the special issue of JSSC, Dec. 1996.

André van Schaik (Andre.vanSchaik@epfl.ch), January 1998. If you have a comment about this page, click here.