Recent Advances in Hearing Aid Technology-A Review

Hearing aids are electroacoustic gadgets commonly worn in or behind the ear and are intended to enhance the speech Nowadays hearing aids support various application unlike the traditional ones such that it can act like headphones streaming audio signals from internet-enabled devices connected wirelessly via Bluetooth. This paper aims to review the various advancements in the hearing aid technology. System on chip technology of the microcontroller have been used in various studies to develop and design an effective hearing assistant device and help the people with hearing impairment to lead a normal life. Ten articles have been reviewed for the study and it can be concluded that IoT is the future for an efficient, cost effective hearing assistive system [1]

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Multiprocessor transport surveillance video system based on "system on chip" technology

MORSKIE INTELLEKTUAL`NYE TEHNOLOGII ◽

10.37220/mit.2020.49.3.023 ◽

2020 ◽

Author(s):

Ш.С. Фахми ◽

Н.В. Шаталова ◽

В.В. Вислогузов ◽

Е.В. Костикова

Keyword(s):

System On Chip ◽

Reference Points ◽

Surveillance Video ◽

Video Information ◽

Chip Technology ◽

Intelligent Video Surveillance System ◽

Speed Up ◽

Algorithmic Analysis ◽

Computational Procedures ◽

On Chip

В данной работе предлагаются математический аппарат и архитектура многопроцессорной транспортной системы на кристалле (МПТСнК). Выполнена программно-аппаратная реализация интеллектуальной системы видеонаблюдения на базе технологии «система на кристалле» и с использованием аппаратного ускорителя известного метода формирования опорных векторов. Архитектура включает в себя сложно-функциональные блоки анализа видеоинформации на базе параллельных алгоритмов нахождения опорных точек изображений и множества элементарных процессоров для выполнения сложных вычислительных процедур алгоритмов анализа с использованием средств проектирования на базе реконфигурируемой системы на кристалле, позволяющей оценить количество аппаратных ресурсов. Предлагаемая архитектура МПТСнК позволяет ускорить обработку и анализ видеоинформации при решении задач обнаружения и распознавания чрезвычайных ситуаций и подозрительных поведений. In this paper, we propose the mathematical apparatus and architecture of a multiprocessor transport system on a chip (MPTSoC). Software and hardware implementation of an intelligent video surveillance system based on the "system on chip" technology and using a hardware accelerator of the well-known method of forming reference vectors. The architecture includes complex functional blocks for analyzing video information based on parallel algorithms for finding image reference points and a set of elementary processors for performing complex computational procedures for algorithmic analysis. using design tools based on a reconfigurable system on chip that allows you to estimate the amount of hardware resources. The proposed MPTSoC architecture makes it possible to speed up the processing and analysis of video information when solving problems of detecting and recognizing emergencies and suspicious behaviors

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Frequency Controlled Noise Cancellation for Audio and Hearing Purposes

EMITTER International Journal of Engineering Technology ◽

10.24003/emitter.v8i1.473 ◽

2020 ◽

Vol 8 (1) ◽

pp. 270-290

Author(s):

Ali O. Abid Noor

Keyword(s):

Time Delay ◽

Power Consumption ◽

Hearing Aids ◽

High Speed ◽

Hearing Aid ◽

External Noise ◽

Noise Cancellation ◽

Audio Signals ◽

Real Time Processing ◽

Full Band

Methods for hearing aids sought to compensate for loss in hearing by amplifying signals of interest in the audio band. In real-world, audio signals are prone to outdoor noise which can be destructive for hearing aid. Eliminating interfering noise at high speed and low power consumption became a target for recent researches. Modern hearing compensation technologies use digital signal processing which requires minimum implementation costs to reduce power consumption, as well as avoiding delay in real time processing. In this paper, frequency controlled noise cancellation (FCNC) strategy for hearing aid and audio communication is developed with low complexity and least time delay. The contribution of the current work is made by offering a method that is capable of removing inherent distortion due filter-bank insertion and assigning adaptive filtering to a particular sub-band to remove external noise. The performance of the proposed FCNC was examined under frequency-limited noise, which corrupts particular parts of the audio spectrum. Results showed that the FCNC renders noise-immune audio signals with minimal number of computations and least delay. Mean square error (MSE) plots of the proposed FCNC method reached below -30 dB compared to -25 dB using conventional sub-band method and to -10 dB using standard full-band noise canceller. The proposed FCNC approach gave the lowest number of computations compared to other methods with a total of 346 computations per sample compared to 860 and 512 by conventional sub-band and full-band methods respectively. The time delay using FCNC is the least compared to the other methods.

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