Acoustics
Musical Sound:
Music is one of the glories of sound.When a musician plays a certain note of a certain pitch,t he musical instrument vibrates or RESONATE and produces a complex pattern of sound waves made up of many different frequencies.The most noticeable sound waves is called the fundamental,but there are other waves with higher frequencies,called harmonics.Notes from a flute sound more pure than those from a saxophone because they contain fewer harmonics.Musical instruments often make very quiet sounds,but some are designed to AMPLIFY the sounds they make so we can hear them more easily.
String instrument:
A violin makes musical sounds when it's strings vibrate.If you plucks string and watch it closely,you can see it vibrating very quickly.The vibrations begin with the strings,but quickly make the large wooden body of the instrument vibrate as well.The vibrating body amplifies the sound greatly.
The Acoustic Guitar:
An acoustic guitar has a large wooden body or a soundbox,that amplifies the sounds made by the strings.As the strings vibrate,they make the body,to which they are attached vibrate as well.The body is hollow and full of air.When it vibrates,the air inside it vibrates as well.This produces amplified,more intense sound waves that pass out through the hole in the front.
Electric guitar:
Under the steel strings of the electric guitar,there are tiny magnets that generate small amounts of electricity as the strings move.These currents are fed into a separate piece of equipment called an electronic amplifier.This increases the current many times and uses it to play the sound of the guitar through a loudspeaker.
Acoustics:
The science of how sound behaves,especiallywhen it travels through our everyday world is called Acoustics.Sound waves normally travel in straight line directly outwards from their source,but they do not always travel in that way.An object standing in the path of a sound wave can affect it's movement.When a sound wave hits a hard object,the sound reflects back towards the source in the form of an ECHO.When soft objects get in the way they can ABSORB the sound and stop it from travelling any further.Scientists use sound reflections and absorption to investigate the places they cannot visit such as the depths of ocean and the interior of the Earth.
Music is one of the glories of sound.When a musician plays a certain note of a certain pitch,t he musical instrument vibrates or RESONATE and produces a complex pattern of sound waves made up of many different frequencies.The most noticeable sound waves is called the fundamental,but there are other waves with higher frequencies,called harmonics.Notes from a flute sound more pure than those from a saxophone because they contain fewer harmonics.Musical instruments often make very quiet sounds,but some are designed to AMPLIFY the sounds they make so we can hear them more easily.
String instrument:
A violin makes musical sounds when it's strings vibrate.If you plucks string and watch it closely,you can see it vibrating very quickly.The vibrations begin with the strings,but quickly make the large wooden body of the instrument vibrate as well.The vibrating body amplifies the sound greatly.
The Acoustic Guitar:
An acoustic guitar has a large wooden body or a soundbox,that amplifies the sounds made by the strings.As the strings vibrate,they make the body,to which they are attached vibrate as well.The body is hollow and full of air.When it vibrates,the air inside it vibrates as well.This produces amplified,more intense sound waves that pass out through the hole in the front.
Electric guitar:
Under the steel strings of the electric guitar,there are tiny magnets that generate small amounts of electricity as the strings move.These currents are fed into a separate piece of equipment called an electronic amplifier.This increases the current many times and uses it to play the sound of the guitar through a loudspeaker.
Acoustics:
The science of how sound behaves,especiallywhen it travels through our everyday world is called Acoustics.Sound waves normally travel in straight line directly outwards from their source,but they do not always travel in that way.An object standing in the path of a sound wave can affect it's movement.When a sound wave hits a hard object,the sound reflects back towards the source in the form of an ECHO.When soft objects get in the way they can ABSORB the sound and stop it from travelling any further.Scientists use sound reflections and absorption to investigate the places they cannot visit such as the depths of ocean and the interior of the Earth.
Hollywood Bowl:It is a famous,open-air amphitheatre in California,USA .An amphitheatre is a bowl shaped place the reflects sound naturally and evenly into the landscape around it.The Hollywood Bowl was carved into the side of a mountain at Bolton Canyon in the 1920s and can seat 20,000 people.
Comments
Post a Comment