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Sound and Smell

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Submitted By dzafica
Words 1118
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Sound
Sound is defined as the movement of air molecules brought about by a source of vibration. The ear works by picking up sound waves vibration in the eardrum, which is located inside your ear. Then the sound waves are carried through a fluid in the inner ear called cochlea, this process turns and vibrates tiny hairs that tune to different pitches of sound. Information from the vibration of the hairs stimulates nerves is then sent to the signals of the brain to be processed. The ear is similar to a microphone where sound vibrates a diaphragm, which causes electrical signals to travel through a wire to a processor. Sound is made up of characteristics which are pitch and loudness. Pitch is known as the tone of a sound wave that is determined by its frequency, and then its wavelength is divided by the speed of sound. The result is sound that you hear which consists of different frequencies or wavelengths. After this process is complete its final step is to determine their pitch. Loudness is the amplitude of a sound wave that determines its loudness. The amplitude has to be loud enough for you to hear a sound. This amplitude varies by what type of species of animal. Loud sounds can injure your ears and result in loss of hearing. Sound can be affected by the direction and distance. You can detect the direction of a sound and where it is coming from. When you detect the direction of sound it is determined by comparing the sound heard by each ear. The detection of the distance is the most difficult step to sound; this is because it relates to the loudness and quality of the sound heard. Sound is made so you can hear the world and environment around you. The process of sound helps you understand the information that is being presented to you. Ears sense pitch and loudness; animals and humans can hear sound in different ranges. You can determine direction and distance

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