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In nature, localization is a very fundamental task for which natural evolution has come up with many powerful solutions. In technical applications, however, localization is still quite a challenge, since most ready-to-use systems are not satisfactory in terms of costs, resolution, and effective range. This paper proposes a new localization system that is largely inspired by auditory system of the...
The nucleus laminaris of the barn owl auditory system is quite impressive, since its underlying time estimation is much better than the processing speed of the involved neurons. Since precise localization is also very important in many technical applications, this paper explores to what extent the main principles of the nucleus laminaris can be implemented in digital hardware. The first prototypical...
Normally, research on evolutionary computation applies its algorithms to the solution or optimization of some technical or mathematical problems. But for some technical tasks, such as localization, nature seem to provides optimal solutions. This paper discusses how the barn owl auditory system can be conceptually realized on a digital system, such as a field-programmable gate array. This adapted system...
This paper explores to what extent an abstract model of the barn owl auditory system can be utilized as the core of a digital indoor localization system. A first prototype has been implemented on a low-cost Altera Cyclone II field-programmable gate array. With a system clock of 85 MHz, this prototype yields a resolution of about 0.02 ns for frequencies ranging from 11 kHz to up to 300 MHz. The achieved...
Cochlea implants help regain the auditory sense in cases where the cochlea has lost its ability to transform incoming sound signals into electrical stimulation for the auditory cortex. A cochlea implant requires a first calibration process, which is often based on the well-known stapedius reflex. This paper proposes a system, called the stapedius reflex detector (SRD), that aims to provide a step...
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