Study Of Digital Hearing Aid Using Frequency Shaping Function
نویسندگان
چکیده
Hearing aids are devices used by hearing impaired people to compensate hearing losses. Digital hearing aids are better in performance over the analog hearing aids, since analog hearing aids work as amplifier. Digital hearing aids are programmable to adjust the gain value, enhance signal to noise ratio, reduction in noise, feedback cancellation etc . In the present work, study of digital hearing aid is proposed to reduce hearing losses by using frequency shaping function. This digital hearing aid provide more flexibility to meet the requirement of hearing impaired people to increase the gain level of audio signal. Noise reduction, frequency shaping and amplitude limiting of speech signal are used in it. In this, signal is manipulated for three different types of hearing impaired people and makes the signal more audible for them. KeywordsDigital hearing aid , Frequency shaping , Amplitude shaping and noise reduction.
منابع مشابه
مقایسه تأثیر سمعکهای پشت گوشی دیجیتال باآنالوگ در درمان وزوز گوش بیماران سالمند مراجعه کننده به مراکزگوش وحلق وبینی شهرهمدان
Introduction & Objective: Tinnitus is one of the most common otologic complaints. This study was designed for evaluation of different kinds of hearing aids effectiveness in treatment of tinnitus in elderly patients in Hamadan. Materials & Methods: In this clinical trial study 27 referral patients with complaint of tinnitus and hearing loss to otolaryngology clinics in Hamadan during 2006-7 w...
متن کاملReal-time digital speech processing strategies for the hearing impaired
This paper deals with digital processing of speech as it pertains to the hearing impaired. The issues described in this paper deal with the development of a true real-time digital hearing aid. The system (based on Texas Instruments TMS320C3X) implements frequency shaping, noise reduction, , interaural time delay, amplitude compression and various timing options. It also provides a testbed for f...
متن کاملHearing Impairment and Hearing Aid Usage in the Elderly of Northern Iran’s Rural Areas: A Field Study
Background: Hearing impairment is the most common otolaryngologic manifestation of aging. Objectives: Few studies have focused on Hearing Loss (HL) in the Iranian “normal” elderly population. This study aimed to evaluate audiological problems in the normal elderly people of the rural areas of Rasht City in the north of Iran. Materials & Methods: This cross-sectional study was conducted in 2...
متن کاملThe Relationship Between Acceptable Noise Level and Initial Acceptance of Hearing Aid
Introduction: The Acceptable Noise Level (ANL) evaluates the willingness of a listener to hear a continuous speech in the presence of background noise. ANL is related to some variables. Although many studies were accomplished on the relationship between ANL and hearing aid satisfaction, no study was found for the usage of ANL as the predictor of initial hearing aid acquisition. Therefore, the c...
متن کاملLow power real-time programmable DSP development platform for digital hearing aids
This application report describes the development of a new low power binaural wearable digital hearing aid platform based on the TMS320C5000 fixed point digital signal processor (DSP). This platform is a real-time system capable of processing two input speech channels at a 32 KHz sampling rate for each channel and driving a stereo headphone output. It provides for frequency shaping, noise supp...
متن کامل