Explain Sound waves ?
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⭐Sound is a vibration that propagates as an audible wave of pressure, through a transmission medium such as
➡ a gas,
➡liquid or
➡solid.
⭐Sound is actually the reception of such waves and their perception by the brain nervous system or neural network.
⭐They are created by the vibration of an object, which causes the air surrounding it to vibrate That is The pressure difference.
⭐The vibrating air or pressure difference between air particles ,then causes the human eardrum to vibrate which the brain interprets as sound.
⭐A sound wave is the pattern of disturbance caused by the movement of energy traveling through a medium
✨Medium such as
➡ air,
➡water
➡any other liquid
➡ solid matter.
✨ The source of vibrations can be ringing telephone, or a person's vocal chords
⭐Sound is a type of Energy that can be transformed from one form to another and sound is a form of energy in which the molecules in matter--solid, liquid or gas begins to vibrate.
⭐Light and sound both travel in waves, but not that of the same type.
➡ a gas,
➡liquid or
➡solid.
⭐Sound is actually the reception of such waves and their perception by the brain nervous system or neural network.
⭐They are created by the vibration of an object, which causes the air surrounding it to vibrate That is The pressure difference.
⭐The vibrating air or pressure difference between air particles ,then causes the human eardrum to vibrate which the brain interprets as sound.
⭐A sound wave is the pattern of disturbance caused by the movement of energy traveling through a medium
✨Medium such as
➡ air,
➡water
➡any other liquid
➡ solid matter.
✨ The source of vibrations can be ringing telephone, or a person's vocal chords
⭐Sound is a type of Energy that can be transformed from one form to another and sound is a form of energy in which the molecules in matter--solid, liquid or gas begins to vibrate.
⭐Light and sound both travel in waves, but not that of the same type.
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manalishakalita:
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✴Sound waves exist as variations of pressure in a medium such as air. They are created by the vibration of an object, which causes the air surrounding it to vibrate. The vibrating air then causes the human eardrum to vibrate, which the brain interprets as sound.
✴The illustration on the left shows a speaker creating sound waves
✴Sound waves travel through air in much the same way as water waves travel through water. In fact, since water waves are easy to see and understand, they are often used as an analogy to illustrate how sound waves behave.
✴standard x vs y graph, as shown here. This allows us to visualise and work with waves from a mathematical point of view. The resulting curves are known as the "waveform" (i.e. the form of the wave.)
✴The wave shown here represents a constant tone at a set frequency. You will have heard this noise being used as a test or identification signal. This "test tone" creates a nice smooth wave which is ideal for technical purposes. Other sounds create far more erratic waves.
✴Note that a waveform graph is two-dimensional but in the real world sound waves are three-dimensional. The graph indicates a wave traveling along a path from left to right, but real sound waves travel in an expanding sphere from the source. However the 2-dimensional model works fairly well when thinking about how sound travels from one place to another.
✴The next thing to consider is what the graph represents; that is, what it means when the wave hits a high or low point. The following explanation is a simplified way of looking at how sound waves work and how they are represented as a waveform. Don't take it too literally — treat it as a useful way to visualise what's going on.
✴In an electronic signal, high values represent high positive voltage. When this signal is converted to a sound wave, you can think of high values as representing areas of increased air pressure. When the waveform hits a high point, this corresponds to molecules of air being packed together densely. When the wave hits a low point the air molecules are spread more thinly.
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✴The illustration on the left shows a speaker creating sound waves
✴Sound waves travel through air in much the same way as water waves travel through water. In fact, since water waves are easy to see and understand, they are often used as an analogy to illustrate how sound waves behave.
✴standard x vs y graph, as shown here. This allows us to visualise and work with waves from a mathematical point of view. The resulting curves are known as the "waveform" (i.e. the form of the wave.)
✴The wave shown here represents a constant tone at a set frequency. You will have heard this noise being used as a test or identification signal. This "test tone" creates a nice smooth wave which is ideal for technical purposes. Other sounds create far more erratic waves.
✴Note that a waveform graph is two-dimensional but in the real world sound waves are three-dimensional. The graph indicates a wave traveling along a path from left to right, but real sound waves travel in an expanding sphere from the source. However the 2-dimensional model works fairly well when thinking about how sound travels from one place to another.
✴The next thing to consider is what the graph represents; that is, what it means when the wave hits a high or low point. The following explanation is a simplified way of looking at how sound waves work and how they are represented as a waveform. Don't take it too literally — treat it as a useful way to visualise what's going on.
✴In an electronic signal, high values represent high positive voltage. When this signal is converted to a sound wave, you can think of high values as representing areas of increased air pressure. When the waveform hits a high point, this corresponds to molecules of air being packed together densely. When the wave hits a low point the air molecules are spread more thinly.
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