منابع مشابه
An FPGA-Based Electronic Cochlea
A module generator which can produce an FPGA-based implementation of an electronic cochlea filter with arbitrary precision is presented. Although hardware implementations of electronic cochlea models have traditionally used analog VLSI as the implementation medium due to their small area, high speed, and low power consumption, FPGA-based implementations offer shorter design times, improved dyna...
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Absfracf-An engineered system that hears, such as a speech recognizer, can be designed by modeling the cochlea, or inner ear, and higher levels of the auditory nervous system. To he useful in such a system, a model of the cochlea should incorporate a variety of known effects, such as an asymmetric low-passibandpass response at each output channel, a short ringing time, and active adaptation to ...
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An efficient Lookup Table (LUT) design for memory-based multiplier is proposed. This multiplier can be preferred in DSP computation where one of the inputs, which is filter coefficient to the multiplier, is fixed. In this design, all possible product terms of input multiplicand with the fixed coefficient are stored directly in memory. In contrast to an earlier proposition Odd Multiple Storage ...
متن کاملAnalog electronic cochlea with mammalian hearing characteristics
Systems close to bifurcations can be used as small-signal amplifiers. Biophysical measurements suggest that the active amplifiers present in the mammalian cochlea are systems close to a Hopf bifurcation. The pure tone and transient signal output of our electronic hearing sensor based on this observation provides output that is fully compatible with the electrophysiological data from the mammali...
متن کاملAn Fpga Based Parametrisable System
This paper presents novel architectures for efficient implementation of Discrete Orthogonal Transforms (DOTs) using an FPGA based parameterisable system. These transforms are important in many signal and image processing applications including image and speech compression, filtering and coding. Two novel architectures for DOTs using both systolic architecture and distributed arithmetic design m...
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ژورنال
عنوان ژورنال: EURASIP Journal on Advances in Signal Processing
سال: 2003
ISSN: 1687-6180
DOI: 10.1155/s1110865703303038