1) What is meant by sound?
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Sound is a pressure wave which is created by a vibrating object.
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the sensation produced by stimulation of the organs of hearing by vibrations transmitted through the air or other medium.
mechanical vibrations transmitted through an elastic medium, traveling in air at a speed of approximately 1,087 feet (331 meters) per second at sea level.
ORIGIN OF SOUND1
First recorded in 1250–1300; (noun) Middle English soun, from Anglo-French (Old French son ), from Latin sonus; (verb) Middle English sounen, from Old French suner, from Latin sonāre, derivative of sonus
SYNONYM STUDY FOR SOUND
1. Sound, noise, tone refer to something heard. Sound and noise are often used interchangeably for anything perceived by means of hearing. Sound, however, is more general in application, being used for anything within earshot: the sound of running water. Noise, caused by irregular vibrations, is more properly applied to a loud, discordant, or unpleasant sound: the noise of shouting. Tone is applied to a musical sound having a certain quality, resonance, and pitch.
In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid
In human physiology and psychology, sound is the reception of such waves and their perception by the brain.[1] Only acoustic waves that have frequencies lying between about 20 Hz and 20 kHz, the audio frequency range, elicit an auditory percept in humans. In air at atmospheric pressure, these represent sound waves with wavelengths of 17 meters (56 ft) to 1.7 centimetres (0.67 in). Sound waves above 20 kHz are known as ultrasound and are not audible to humans. Sound waves below 20 Hz are known as infrasound. Different animal species have varying hearing ranges.
the sensation produced by stimulation of the organs of hearing by vibrations transmitted through the air or other medium.
mechanical vibrations transmitted through an elastic medium, traveling in air at a speed of approximately 1,087 feet (331 meters) per second at sea level.
ORIGIN OF SOUND1
First recorded in 1250–1300; (noun) Middle English soun, from Anglo-French (Old French son ), from Latin sonus; (verb) Middle English sounen, from Old French suner, from Latin sonāre, derivative of sonus
SYNONYM STUDY FOR SOUND
1. Sound, noise, tone refer to something heard. Sound and noise are often used interchangeably for anything perceived by means of hearing. Sound, however, is more general in application, being used for anything within earshot: the sound of running water. Noise, caused by irregular vibrations, is more properly applied to a loud, discordant, or unpleasant sound: the noise of shouting. Tone is applied to a musical sound having a certain quality, resonance, and pitch.
In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid
In human physiology and psychology, sound is the reception of such waves and their perception by the brain.[1] Only acoustic waves that have frequencies lying between about 20 Hz and 20 kHz, the audio frequency range, elicit an auditory percept in humans. In air at atmospheric pressure, these represent sound waves with wavelengths of 17 meters (56 ft) to 1.7 centimetres (0.67 in). Sound waves above 20 kHz are known as ultrasound and are not audible to humans. Sound waves below 20 Hz are known as infrasound. Different animal species have varying hearing ranges.
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