Revision History: The Science of Musical Instruments - Grade 10 teaching and learning project

On: 2012-11-15 16:08:09 awarenet Open Day visitor changed content of section 154389045652626668 to

* The marimba consists of a set of wooden bars of different sizes placed together which have resonators.

* It works by striking the wooden bars with a mallet, which makes the sound travel through the resonating box, making the sound resonate.

* The bars on top are different sized which makes them produce or create different pitches and sounds.

* The keys are arranged the same way as those of  a piano which aids the performer both visually and phsically when playing the music.

* The marimba is a type of xylophone but it has a broader and a lower tonal range and resonators.

* The mallets are long, strong wooden sticks which have round, hard plastic balls at the front end of the stick so as to produce a gentler sound than hitting the wooden bars with wooden sticks on their own.

* When one hits the wooden bars with a mallet, the marimba vibrates and produces a powerful sound.

* Marimbas vary in size.

* The top bars are hard but smooth in texture and are labelled with alphabetical letters: C D E F G A B C with accidentals, sharps and flats.

* These bars, that produce beautiful, dark, sweet tones are made from rosewood which is hard wood found in tropical forests.

The way a marimba works is by hitting the wooden bars with a mallet, which makes the sound travel through the pipes.

• Different sized wooden bars and tubes make the different pitches and sounds.
• The hammers/sticks you play the marimba with are called mallets.
• mallets are always different colours because it helps distinguish the varying hardness.
• Softer mallets are used for for lower notes where as harder mallets are used for higher notes.
• Depending on how much force you put in hitting the bars affects how Forte or Piano your sound will be.
• There are the resonaters as well on the marimba which help resonate the sound produced by hitting the bars.

• The marimba is made up of a set of wooden bars or keys which are like piano but has resonators.
• The bars are struck by mallets which produce a sound.
• The marimbas have lower and broader tonal range and resonators.
• The resonators are hang below each bar so when you hit a bar with a mallet it creates vibrations which resonates as the vibrations pass tubes.
• Ranges of the marimbas have expanded hence they have 5-octave.
• The marimba is non-transposing instrument with no octave displacement.
• The mallets are wooden handles and a rubber disk attached at one end.

Watch a video on how the marimba works

Listen to Marimbas being played

On: 2012-11-15 15:42:16 awarenet Open Day visitor changed content of section 174452962354864991 to

• In the piano there are strings, hammers, the soundboard, dampers and a frame

• Every note sounded on the piano is because of a string or a set of two or three strings vibrating at a specific frequency according to the length, tension, diameter and density of the wire. A shorter and lighter string vibrates faster and makes a higher pitched sound
• Strings tuned to the same note are called unisons.If the strings aren't all at the proper tensions then the notes wont make the right pitches meaning that the piano will be out of tune.
• String lengths and diameters increase from treble to bass, several notes have the same thickness of wire but have different lengths and tuned to different tensions to make the desired pitches.
• When a piano key is pressed, a hammer flies up and hits the strings tuned to produce the specific note then it falls away quickly so it doesn't stop the strings vibrating
• Modern piano hammers are made of wood covered with compacted felt
• The vibration of the piano strings alone would be too quiet so they need to b e amplified. Piano strings press down on a bridge which conducts their vibration to the big thin piece of wood called the soundboard
• The damper stops the vibration of the string when the note has gone on long enough
• The pedal on the right lifts all the dampers away from the string enabling the player to sustain a series of notes that will continue even after the player has removed their finger from the note
• To withstand the tension of the strings, a piano must have a stable frame.
• A modern pianos strings are supported by an iron plate, cast in a single pice and bolted to a heavy wooden frame.
  

On: 2012-11-15 12:50:08 awarenet Open Day visitor changed content of section 174452962354864991 to

• In the piano there are strings, hammers, the soundboard, dampers and a frame

• Every note sounded on the piano is because of a string or a set of two or three strings vibrating at a specific frequency according to the length, tension, diameter and density of the wire. A shorter and lighter string vibrates faster and makes a higher pitched sound
• Strings tuned to the same note are called unisons.If the strings aren't all at the proper tensions then the notes wont make the right pitches meaning that the piano will be out of tune.
• String lengths and diameters increase from treble to bass, several notes have the same thickness of wire but have different lengths and tuned to different tensions to make the desired pitches.
• When a piano key is pressed, a hammer flies up and hits the strings tuned to produce the specific note then it falls away quickly so it doesn't stop the strings vibrating

• Modern piano hammers are made of wood covered with compacted felt
• The vibration of the piano strings alone would be too quiet so they need to b e amplified. Piano strings press down on a bridge which conducts their vibration to the big thin piece of wood called the soundboard
• The damper stops the vibration of the string when the note has gone on long enough
• The pedal on the right lifts all the dampers away from the string enabling the player to sustain a series of notes that will continue even after the player has removed their finger from the note
• To withstand the tension of the strings, a piano must have a stable frame.
• A modern pianos strings are supported by an iron plate, cast in a single pice and bolted to a heavy wooden frame. 

On: 2012-03-31 15:15:59 Sarah Hanton changed content of section 184158868812454395 to

These are the important facts about how the human voice works:

• The human larynx and respiratory system are basic structural components of the  human body that directly support vocalization.
• The larynx opens when we breathe and shuts when we hold our breath. It also influences the production of the human voice.
• When we swallow, the flap called the epiglottis closes to protect the airway and lungs from being inundated by food and liquids, instead allowing them to travel through the esophagus to the stomach.
• The production of  the human voice consists of three components: The production of airflow, the generation and resonance of sound and the articulation of voice.
• The production of the airflow starts in the rib-cage with your lungs. Taking in the air is easy but controlling the release of the air through the throat needs practise and a relaxed diaphragm muscles.
• The generation of sound comes from the larynx or voice box. The larynx has vocal folds (or vocal chords) which have to come together to make a sound.
• The airflow from the rib-cage then vibrates between the folds and makes a sound by oscillating.
• Resonance is developed by controlling the vocal passageway, including the vocal folds, lips and nose, including the sinus.
• The sound must have a space to resonate in and good singers make sure that their lips, tongue  and throat do not interfere with sound production.

Watch a video on how the Voice Works

Listen to a recording of the Aria 'Lascia ch'io Pianga'

On: 2012-03-31 15:14:50 Sarah Hanton changed content of section 154389045652626668 to

* The marimba consists of a set of wooden bars of different sizes placed together which have resonators.

* It works by striking the wooden bars with a mallet, which makes the sound travel through the resonating box, making the sound resonate.

* The bars on top are different sized which makes them produce or create different pitches and sounds.

* The keys are arranged the same way as those of  a piano which aids the performer both visually and phsically when playing the music.

* The marimba is a type of xylophone but it has a broader and a lower tonal range and resonators.

* The mallets are long, strong wooden sticks which have round, hard plastic balls at the front end of the stick so as to produce a gentler sound than hitting the wooden bars with wooden sticks on their own.

* When one hits the wooden bars with a mallet, the marimba vibrates and produces a powerful sound.

* Marimbas vary in size.

* The top bars are hard but smooth in texture and are labelled with alphabetical letters: C D E F G A B C with accidentals, sharps and flats.

* These bars, that produce beautiful, dark, sweet tones are made from rosewood which is hard wood found in tropical forests.

The way a marimba works is by hitting the wooden bars with a mallet, which makes the sound travel through the pipes.

• Different sized wooden bars and tubes make the different pitches and sounds.
• The hammers/sticks you play the marimba with are called mallets.
• mallets are always different colours because it helps distinguish the varying hardness.
• Softer mallets are used for for lower notes where as harder mallets are used for higher notes.
• Depending on how much force you put in hitting the bars affects how Forte or Piano your sound will be.
• There are the resonaters as well on the marimba which help resonate the sound produced by hitting the bars.

• The marimba is made up of a set of wooden bars or keys which are like piano but has resonators.
• The bars are struck by mallets which produce a sound.
• The marimbas have lower and broader tonal range and resonators.
• The resonators are hang below each bar so when you hit a bar with a mallet it creates vibrations which resonates as the vibrations pass tubes.
• Ranges of the marimbas have expanded hence they have 5-octave.
• The marimba is non-transposing instrument with no octave displacement.
• The mallets are wooden handles and a rubber disk attached at one end.

Watch a video on how the marimba works

Listen to Marimbas being played

On: 2012-03-31 15:14:04 Sarah Hanton changed content of section 174452962354864991 to

• In the piano there are strings, hammers, the soundboard, dampers and a frame

• Every note sounded on the piano is because of a string or a set of two or three strings vibrating at a specific frequency according to the length, tension, diameter and density of the wire. A shorter and lighter string vibrates faster and makes a higher pitched sound
• Strings tuned to the same note are called unisons.If the strings aren't all at the proper tensions then the notes wont make the right pitches meaning that the piano will be out of tune.
• String lengths and diameters increase from treble to bass, several notes have the same thickness of wire but have different lengths and tuned to different tensions to make the desired pitches.
• When a piano key is pressed, a hammer flies up and hits the strings tuned to produce the specific note then it falls away quickly so it doesn't stop the strings vibrating

• Modern piano hammers are made of wood covered with compacted felt
• The vibration of the piano strings alone would be too quiet so they need to b e amplified. Piano strings press down on a bridge which conducts their vibration to the big thin piece of wood called the soundboard
• The damper stops the vibration of the string when the note has gone on long enough
• The pedal on the right lifts all the dampers away from the string enabling the player to sustain a series of notes that will continue even after the player has removed their finger from the note
• To withstand the tension of the strings, a piano must have a stable frame.
• A modern pianos strings are supported by an iron plate, cast in a single pice and bolted to a heavy wooden frame. 

On: 2012-03-31 15:13:21 Sarah Hanton changed content of section 174452962354864991 to

• In the piano there are strings, hammers, the soundboard, dampers and a frame

• Every note sounded on the piano is because of a string or a set of two or three strings vibrating at a specific frequency according to the length, tension, diameter and density of the wire. A shorter and lighter string vibrates faster and makes a higher pitched sound
• Strings tuned to the same note are called unisons.If the strings aren't all at the proper tensions then the notes wont make the right pitches meaning that the piano will be out of tune.
• String lengths and diameters increase from treble to bass, several notes have the same thickness of wire but have different lengths and tuned to different tensions to make the desired pitches.
• When a piano key is pressed, a hammer flies up and hits the strings tuned to produce the specific note then it falls away quickly so it doesn't stop the strings vibrating

• Modern piano hammers are made of wood covered with compacted felt
• The vibration of the piano strings alone would be too quiet so they need to b e amplified. Piano strings press down on a bridge which conducts their vibration to the big thin piece of wood called the soundboard
• The damper stops the vibration of the string when the note has gone on long enough
• The pedal on the right lifts all the dampers away from the string enabling the player to sustain a series of notes that will continue even after the player has removed their finger from the note
• To withstand the tension of the strings, a piano must have a stable frame.
• A modern pianos strings are supported by an iron plate, cast in a single pice and bolted to a heavy wooden frame. 

On: 2012-03-31 15:10:01 Sarah Hanton changed content of section 174452962354864991 to

• In the piano there are strings, hammers, the soundboard, dampers and a frame

• Every note sounded on the piano is because of a string or a set of two or three strings vibrating at a specific frequency according to the length, tension, diameter and density of the wire. A shorter and lighter string vibrates faster and makes a higher pitched sound
• Strings tuned to the same note are called unisons.If the strings aren't all at the proper tensions then the notes wont make the right pitches meaning that the piano will be out of tune.
• String lengths and diameters increase from treble to bass, several notes have the same thickness of wire but have different lengths and tuned to different tensions to make the desired pitches.
• When a piano key is pressed, a hammer flies up and hits the strings tuned to produce the specific note then it falls away quickly so it doesn't stop the strings vibrating
• Modern piano hammers are made of wood covered with compacted felt
• The vibration of the piano strings alone would be too quiet so they need to b e amplified. Piano strings press down on a bridge which conducts their vibration to the big thin piece of wood called the soundboard
• The damper stops the vibration of the string when the note has gone on long enough
• The pedal on the right lifts all the dampers away from the string enabling the player to sustain a series of notes that will continue even after the player has removed their finger from the note
• To withstand the tension of the strings, a piano must have a stable frame.
• A modern pianos strings are supported by an iron plate, cast in a single pice and bolted to a heavy wooden frame.
  

On: 2012-03-31 11:19:37 Sarah Hanton created new section

819244607115759679

On: 2012-03-31 11:19:37 Sarah Hanton changed title of section 819244607115759679 to

Videos and musical examples