what factors affect sound
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- 2.2 FACTORS AFFECTING PROPAGATION OF SOUND There are several important factors, which affect the propagation of sound: geometric spreading, atmospheric effects, and surface effects. These are discussed separately below. 2.2.1 Geometric Spreading This refers to the spreading of sound energy as a result of the expansion of the wave fronts.
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PRINCIPLES OF COMMUNICATION Communication can be influenced by environmental factors that have nothing to do with the content of the message. Some of these factors are: the nature of the room, how warm it is, smoke, comfort of the chair, etc. outside distractions, what is going on in the area. the reputation/credibility of the speaker/writer.
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- Sound waves traveling through the air or other mediums sometimes affect the objects that they encounter. Recall that sound is caused by the molecules of a medium vibrating. Frequency refers to the number of vibrations that an individual particle makes in a specific period of time, usually a second. Shorter strings have higher frequency and therefore higher pitch. 2  When a musician presses her finger on a string, she shortens its length. 3  The more fingers she adds to the string, the shorter she makes it, and the higher the pitch will be. 4  Diameter is the thickness of the string.
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Natural Frequency Factors Affecting the Natural Frequency. The actual frequency at which an object will vibrate at is determined by a variety of factors. Each of these factors will either affect the wavelength or the speed of the object. an alteration in either speed or wavelength will result in an alteration of the natural frequency.
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- In the introduction on sound, we saw that pitch depends primarily on frequency. However, it also depends, weakly on sound level. It depends, too, on harmonic content. We'll discuss these later: this page looks just at the frequency dependence.
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How Mufflers Work Two main characteristics of the wave determine how we perceive the sound: Sound wave frequency - A higher wave frequency simply means that the air pressure fluctuates faster. The faster an engine runs, the higher the pitch we hear. Slower fluctuations sound like a lower pitch. Air pressure level - The wave's amplitude determines how loud the sound is. Sound waves with greater amplitudes move our eardrums more, and we register this sensation as a higher volume.
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- The effects of noise induced hearing loss can be profound, limiting your ability to hear high frequency sounds, understand speech, and seriously impairing your ability to communicate. When sound waves enter the outer ear, the vibrations impact the ear drum and are transmitted to the middle and inner ear.
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Sensory Neuroscience: Hearing and speech/Sound/physics Sound depends not only on the point of the initiation of vibration (origin), since the medium may absorb or alter the propagation of the vibratory waves it is dependent also on the location of where the sensing is done and the sensor capabilities of processing those sound waves, as waves may have different frequencies.
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- Waves are affected by the characteristics of the medium through which they travel. Density affects wave speed—waves generally travel slower in dense materials and faster in less-dense materials. For example, a sound wave travels nearly three times faster in helium than in air; helium is less dense than air.
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Speed of sound By far the most important factor influencing the speed of sound in air is temperature. The speed is proportional to the square root of the absolute temperature, giving an increase of about 0.6 m/s per degree Celsius. For this reason, the pitch of a musical wind instrument increases as its temperature increases.
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- The amplitude of a sound wave determines its loudness or volume. A larger amplitude means a louder sound, and a smaller amplitude means a softer sound. In Figure 1 sound C is louder than sound B. The vibration of a source sets the amplitude of a wave.
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Major Factors in Acoustic Guitar Sound Quality In fact, we’ve covered how tonewood affects sound in earlier posts. The way the guitar is built plays affects sound quality too. It all depends on the techniques used.
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Does wind affect how far sound can travel? Wind is basically moving air. So, the medium through which the sound is propagated is moving and the velocity of wind is added vectorially to the velocity of sound. That's why the frquency of the sound heard by a listener depends on the wind velocity.
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Physics for Kids The type of matter has a large impact on the speed at which the sound will travel. For example, sound travels faster in water than air. Sound travels even faster in steel. In dry air, sound travels at 343 meters per second (768 mph).
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Does wind have an effect on sound? The speed of sound increases or decreases according to direction of wind. If wind is blowing in direction of propagation of sound , the speed of sound increases , while if it is blowing in a direction opposite to that of sound ,the speed of sound decreases. V-w when wind blows in direction opposite to the direction in which sound travels.
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How, if at all, do high altitudes and variations in air pressure affect sound? For a gas, the stiffness depends on the pressure. So, with increasing altitude, the speed of sound will decrease. However, this should have no affect on the way the sound is perceived by the human ear, which is determined mostly by the frequency of the sound. A concert recorded in La Paz should sound very similar to one recorded in Amsterdam. Views · View Upvotes.
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- exhaust pipe image by A74.FR Ben Fontaine from Fotolia.com. A vehicle's exhaust sound is affected by four factors. The first and greatest is the engine size. The greater volume of engine displacement -- usually measured in liters or cubic inches -- the greater the exhaust output.
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- Some people with very good hearing can hear sounds down to -15 dB. If a sound reaches 85 dB or stronger, it can cause permanent damage to your hearing. The amount of time you listen to a sound affects how much damage it will cause. The quieter the sound, the longer you can listen to it safely.If the sound is very quiet, it will not cause damage even if you listen to it for a very long time; however, exposure to some common sounds can cause permanent damage.f enough of them are damaged, hearing loss results. The high frequency area of the cochlea is often damaged by loud sound. Sound pressure is measured in decibels (dB). Like a temperature scale, the decibel scale goes below zero. The average person can hear sounds down to about 0 dB, the level of rustling leaves.
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- The extent of damage to your hearing caused by noise depends on: Decibel level: How loud the sound is. Distance: How close you are to the source of the sound.
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Hearing loss - how it affects people Hearing loss refers to reduced hearing, which can be caused by a variety of factors. It can either be congenital or acquired later on in life. It can range from mild hearing loss to profound hearing loss. Hearing loss can affect personal and work life. Hearing loss can affect a person in three main ways: fewer educational and job opportunities due to impaired communication. social withdrawal due to reduced access to services and difficulties communicating with others. emotional problems caused by a drop in self-esteem and confidence.
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Sound The speed of sound in a material, particularly in a gas or liquid, varies with temperature because a change in temperature affects the material's density. In air, for example, the speed of sound increases with an increase in temperature.
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How does the temperature of a medium affect the speed of sound through that medium? Humidity has a small but measurable effect on sound speed (causing it to increase by about 0.1%-0.6%), because oxygen and nitrogen molecules of the air are replaced by lighter molecules of water. This is a simple mixing effect.http://en.wikipedia.org/wiki/Speed_of_so...umidity has a small but measurable effect on sound speed (causing it to increase by about 0.1%-0.6%), because oxygen and nitrogen molecules of the air are replaced by lighter molecules of water. This is a simple mixing effect.
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Sound The speed of sound in a material, particularly in a gas or liquid, varies with temperature because a change in temperature affects the material's density. In air, for example, the speed of sound increases with an increase in temperature.At 32 °F. (0 °C.), the speed of sound in air is 1,087 feet per second (331 m/s); at 68 °F. (20 °C.), it is 1,127 feet per second (343 m/s).he effect of elasticity and density on the speed of sound can be seen by comparing the speed of sound in air, hydrogen, and iron. Air and hydrogen have nearly the same elastic properties, but the density of hydrogen is less than that of air. Sound thus travels faster (about 4 times as fast) in hydrogen than in air.
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- A doubling of distance from the sound source in the direct field will reduce the sound level by. (−)6 dB, no matter whether that are sound pressure levels or sound intensity levels! This will. reduce the sound pressure p (field size) to 1/2 = 0.5 (50 %) and the sound intensity I (energy.
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How Weather Affects an Outdoor Noise Study In less than usual conditions, where the measurement of sound propagation over long distances is desired, the weather itself can pose a significant factor. But with the vast majority of the outdoor noise measurements we take at ABD, it is the conditions caused by the weather that can affect the study.
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- If a sound reaches 85 dB or stronger, it can cause permanent damage to your hearing. The amount of time you listen to a sound affects how much damage it will cause. The quieter the sound, the longer you can listen to it safely.