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Digital Signal Processing in Biomedical Engineering

Digital Signal Processing is concerned with the representation of signals by a sequence of numbers or symbols and the processing of these signals. Digital signal processing is a branch of the science of the signal processing. The other branch of the signal processing is Analog Signal Processing.
DSP includes the areas of signal processing like: audio and speech signal processing, sonar and radar signal processing, sensor array processing, spectral estimation, statistical signal processing, digital image processing, signal processing for communications, control of systems, biomedical signal processing, seismic data processing, etc.
DSP is one of the most important areas of study in the fields of communication, electronics instrumentation, research and analysis and many more fields. The main reason is that the signals need to be processed so that the information that they contain can be displayed, analysed, or converted to another type of signal that may be of use. Before we take any usual signal of our day to day life, that analog signal must be converted into the digital signal so that it can be fed to the electronic circuits. Electronic circuits can input the signal in form of only binary digits, I.e. 1

Bionic Eye Implant Design Features

Here, we present a description of a block scheme, specific features of design and results of testing for a prototype of a bionic eye, types of them and its applications. The bionic eye is intended to provide vision, partially to the visually impaired by use of the modern day electronics devices like CCD cameras. The comprises a computer chip that sits in the back of the individual’s eye, linked up to a mini video camera built into glasses that they wear. Images captured by the camera are beamed to the chip, which translates them into impulses that the brain can interpret. Although the images produced by the artificial eye were far from perfect, they could be clear enough to allow someone who is otherwise blind to recognize faces. The paper discusses the differences working methodologies used in each of them. During the tests and the clinical trails, this device made six blind people to regain their vision partially. The potential advantage of using bionic eye is to be able to remove the blindness completely by making the advances in the present research and improving manufacturing technologies. This break through is likely to benefit approximately one crore world population who suffer from the most common causes of blindness, Retinitis Pigmentosa, Macular Degeneration. The implant bypasses the diseased cells in the retina and stimulates the remaining viable cells. This is a revolutionary piece of technology and really has the potential to change people’s lives. But we need to be aware it is still some way in the future.
A Bionic Eye is a device, which acts as an artificial eye. It is a broad term for the entire electronics system consisting of the image sensors, processors, radio transmitters

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