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This paper proposes an efficient bank of filters derived from variable bandwidth filter structure, for audiogram matching in a digital hearing aid. The variable bandwidth filter is designed using Farrow structure, for lower hardware complexity. The magnitude and band edge frequencies of the filters are independently adjustable which allows this arrangement to successfully fit a given audiogram with...
The concern about the adverse effects of mobile phone radiation on the nervous system has increased due to the drastic increase in the number of phone users. The electro encephalo gram (EEG), a record of the oscillations of brain electric potentials reveals the synaptic action that strongly co-relate with brain state. As the EEG signal is non linear, non stationary and noisy, non linear methods will...
A lot of effort has been devoted to the design of uniform and non-uniform filter banks for hearing aid applications. But in most of the cases, it never deals with large variation of hearing losses at mid frequencies. This paper presents a low complex design of a non-uniformly spaced digital finite impulse response (FIR) filter bank for digital hearing aid application. Frequency response masking (FRM)...
Energy efficiency and adaptability in the utilization of radio spectrum are two major research challenges for the advancement of future wireless communications technologies. To address these difficulties, we enhance the energy efficiency by utilizing spectrum opportunity forecasting (SOF) and optimal scheduling for sensor node activation to decrease the required number of SS events. The application...
The resource constrained applications in the present day communication networks demand the use of new cryptographic protocols and hardware with reduced computational and structural complexity. The use of standard, standalone cryptographic primitives are not suitable for such applications. This paper proposes the implementation of a new integrated system for both encryption and authentication based...
Security, reliability and hardware complexity are the main issues to be addressed in resource constrained devices such as wireless sensor networks (WSNs). Secure channel coding schemes have been developed in literature to reduce the overall processing cost while providing security and reliability. The security of a channel coding scheme against various attacks is mainly decided by the nature of intentional...
This paper presents a new weighted interpolation technique to address the Bayer Color Filter Array (CFA) demo-saicking problem. The proposed technique provides two contributions that have not been reported in conventional interpolation methods. Firstly, it exploits the quincuncial nature of the green component of the Bayer CFA. The second contribution treats each of the three planes or lattices of...
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