International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 03 | Mar -2017
p-ISSN: 2395-0072
www.irjet.net
MOBILE TECHNOLOGY FOR HEARING IMPAIRED V. Anand1, G. Akilan2, P. Bharani Kumar3, Mrs. J. Mary Suji Mol4 1,2,3Student,
Dept. of Electronics and Communication Engineering, Professor, Dept. of Electronics and Communication Engineering, Jeppiaar SRR Engineering College, Padur, Chennai-603103, Tamilnadu, India. 4Assistant
---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - The proposed system makes an approach of an alternate way of communication through mobile for the people with hearing disabilities. The system mainly focuses in the subject that the deaf people to communicate via mobile phone without any chance of disturbances. Usually people in cases of hard hearing, will use aid devices for hearing purposes. But while communicating through cellular phones will result in degradation in hearing aid performance and sometimes results in worst cases due to interference of radiation. The biomedical engineering is going to help here to understand the human auditory peripheral system where the project is going to make use of the cochlear nerve. The cochlear nerve is a nerve that connects teeth nerve or carnial nerve and inner ear drum. So without the help of outer ear drum vibration, inner ear drum will function independently when cochlear nerve is vibrated or stimulated. The artificial stimulation of cochlear nerve is done through external application of vibration through transducers with better accuracy to achieve high dynamic range in terms of decibels. So this project suggests an alternate way which totally provides a better utilization of mobile technology. Keywords — hearing disability, cochlear nerve stimulation, mobile communication, error free communication.
1. INTRODUCTION
Telecommunication is a powerful tool for effective information sharing for us today. And that too, mobile technology plays a very important role. Especially, for the people with disabilities (especially deaf people), information provided through their own telecommunication device is extremely important and necessary. In many ways, mobile technology such as email, text and instant messages has proved to be quite empowering to the deaf and hard of hearing community. In this paper, we propose a voice call mobile technology for the deaf people. [1] The gamma-tone filter well expresses the performance of human auditory peripheral mechanism and has a potential of improving advanced speech communications systems, especially hearing assisting devices and noise robust speech recognition systems. The proposed system implements the GSM modem through which the deaf people can hear the voice from GSM speaker.
Š 2017, IRJET
|
Impact Factor value: 5.181
|
2. COCHLEAR NERVE STIMULATION
[2] Cochlear nerve stimulation process is one of the existing systems that help the deaf people to hear artificially. This cochlear nerve is a nerve that carries auditory sensory information from the inner ear directly to the brain. Also this nerve is connected to the teeth nerve. The stimulation of this nerve can be done using Bone Anchored Hearing Aid surgical technique (BAHA). BAHA uses sound processor and titanium screw to vibrate the nerve. Another way of stimulation is done by cochlear implants which bypasses the normal hearing process. Also this includes surgical option and provides discomfort. [3] These procedures need strict maintenance and frequent screening. Our objective is, without using any of this technique we are going to stimulate that nerve externally with the help of filtering and amplification process.
3. SYSTEM PROPOSAL
The proposed system explains about the deaf people using mobile phones. We are enabling GSM kit with mic and filtering for the deaf people to hear and response. Our proposed system includes the benefit of calling through GSM which helps that people to listen the accurate voice which we are implementing with the pre-processor. Making use of the gain-balancing techniques, the computation accuracy at gamma-tone filter is improved, leading to a high dynamic range. The output from the gsm module is first sent through the filter followed by power amplifier and potentiometer to increase and control gain. The output signal from the power amplifier is further filtered to eliminate noise signal and then sent through the line audio amplifier to power the transducer in-order to control the velocity and the inertia of the transducer. The transducer will convert the finally filtered electrical signals into vibrations which was the final output. [4] When the vibrations are being sensed by deaf people, the cochlear nerve gets stimulated to send signals from inner ear to brain.
4. BLOCK DESCRIPTION The detailed behaviour of the system was explained in this chapter with segregated levels. The required power needed for the system performance is drawn from the power supply. The various power specifications that required for different circuit performance was segregated from the single power supply using rectifiers and voltage regulators. Here, the GSM module and LCD display was interfaced using microcontroller. The output from the GSM module was filtered, amplified and converted into vibrations.
ISO 9001:2008 Certified Journal
|
Page 1701