1 – Introduction [54:01]
2 – Image Digitization I [57:51]
3 – Image Digitization II [59:02]
4 – Pixel Relationships [57:16]
5 – Pixels Relationships II [54:19]
6 – Basic Transformations [57:42]
7 – Camera Model and Imaging Geometry [55:03]
8 – Camera Calibration and Stereo Imaging [57:22]
9 – Interpolation and Resampling [57:25]
10 – Image Interpolation – II [1:00:07]
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Company:
Internationally reputed Agency
Position:
Bio Medical Engineer
Location:
Patna
Qualification:
BE/BTech – Bio Medical Engg/ Tech
Experience:
Min 5 Yrs
Salary:
Attractive Salary
Job Description:
Selection, Procurement, Installation, Maintenance of Hospital Equipments
Candidate Profile:
Relevant Exp, Exp in accreditation norms, Good Communication,
Email: ssrivastava@ipeglobal.com
Email Subject: Bio Medical Engineer
Contact:
S. Srivastava
Apply By Date:
24 December, 2009
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A hearing aid is an electro acoustic body-worn apparatus which typically fits in or behind the wearer’s ear, and is designed to amplify and modulate sounds for the wearer.
It makes some sounds louder so that a person with hearing loss can listen, communicate, and participate more fully in daily activities. A hearing aid can help people hear more in both quiet and noisy situations. However, only about one out of five people who would benefit from a hearing aid actually uses one.The hearing aid receives sound through a microphone, which converts the sound waves to electrical signals and sends them to an amplifier. The amplifier increases the power of the signals and then sends them to the ear through a speaker.
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Digital hearing aid |
Analogue hearing aid |
| Digital hearing aid Translate sound to digital code, change it and re-transmit it back by using mathematical calculations.
Distinguish different sounds and therefore amplify all sounds differently. Produces a high quality sound that is extremely accurate. Duplicates sound transmission. Digital circuitry is typically the most expensive. Background noise reduction. Feedback is used for reduction or cancellation of noise. All sound frequency are dealt with. |
Analogue hearing aid directly converts sound waves to electrical waves.
Do not distinguish different sounds and therefore amplify all sounds equally, which means some sounds, are too loud while others may be difficult to hear. This is rectified when the hearing aid user adjusts the volume Sound quality has to be compromised and lot of manual work is required. The sound transmitted has some error. Cheaper as compared to digital one. Background noise no cancelled. No such feedback circuitry is used. Analogue hearing aids are designed with a particular frequency response based on your hearing test. |
Classes of Materials Used in Medicine
Surface Properties of Biomaterials
Surface & Protein Interactions
Chronic Wound Healing and Foreign Body Response
Inflammation – Part II – Degradation of Implanted Materials
Sterilization & Implant-Associated Infections
A hearing aid is a device used to help hard-of-hearing people hear sounds better. In the past, a funnel-like amplification cone, called an “ear trumpet” or “ear horn” was used. Also sometimes used was a desk with a built-in amplifier into which a microphone and earphones could be plugged; these worked better than passive ear trumpets but were not portable.
Introduction