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Title: Why hearing is important - PowerPoint PPT Presentation
Description: A hearing aid is a small electronic device such as personal sound amplifier products that you wear in and behind your ear. The hearing aid receives sound through microphone which converts the sound in electrical signals and send to the amplifiers. The amplifiers increase the power of signals and send to the speakers. Hearing aids are useful in improving the hearing and speech comprehension of people who have hearing loss. – PowerPoint PPT presentation
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