sound - oboe · oboe made using straws of different stiffness in the material. a spiral is made...

Sound - Oboe2-reed oboe made using straw. Commonly called a straw flute

Written By: Kailash NR

Sound - Oboe Release: 1.2 [major] 2018-12-19Guide ID: 13 -

This document was generated on 2019-09-21 06:48:35 PM (MST).

© 2019 of 9

INTRODUCTION

Flatten the given plastic straw and cut one end of it in a `V' shape. Place the cut end into your mouthand blow to create sounds. You can cut the straw to varying lengths to change the frequency of thesound, or make holes in the straw (like a flute!) and create multiple notes from a single straw.

TOOLS:Scissors (1)

PARTS:Bendable Straw (1)Straight Straw (1)



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— Precautions

Handle scissors and cutters or any sharp tool carefully.

Be careful not to insert the straw too far into your mouth.

— Step 1 - Cutting the Straw

Take two straws, one straight and one bendable straw.

Cut the straight straw in to two pieces such that the smaller piece is 5 cm long.

Keep the bendable straw aside as we will use it afterwards.



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— Step 2 - Making the Reeds on Small Piece

Measure and mark approximately 2 cm away from one end using a sketch pen or marker.

Now flatten the marked end of the straw piece and cut in a triangular 'V' shape, like an arrowhead.

When viewed from the side, the cut should look like a crocodile's jaw!

— Step 3 - Making the Reeds on Longer Piece

Now repeat the process with the longer straw piece.



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— Step 4 - Cutting Bendable Straw

Now take the Bendable straw and cut it below the bendable part.

Take the longer piece, flatten the end of the straw and cut it in a triangular shape of about 2 cm,exactly like in Step 2.



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— Step 5 - Making 'Notes'

Fold the straw at 3 cm from the end of the V cut. Cut a small triangle at one of the two corners tomake a diamond shaped hole.

Note that, to have the holes on the "top" of the oboe rather than the "sides", you have to bendthe straw in a way that the "V" shape on the pipe is perpendicular to the line where you bend thestraw.

Make another hole 3 cm away from the previous hole.

— Play!

Play the oboe by placing your lips at the end of the V cut. Compare the sound hence produced withother scenarios listed in the observation table and record your observations.



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— Play!

You now have 3 separate oboes.Play with them individually first.

Blow through the straw, both shortand long, with the cut end in yourmouth, and you should produce anice loud, constant sound!

Now do the same with the multi-noteoboe; block the holes with yourfingers and play the straw like aflute!

You may now also try and play byplacing 2, if not all 3, oboes in yourmouth and playing themsimultaneously.

— Troubleshooting

Blowing too hard or slow.

Triangular "crocodile’s jaw" (reed) is too small.

Not enough of the reed inside the mouth.

The straw not flattened enough at the cut, i.e. the reeds are too far apart.



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— Observations

Does the straw produce the sound when we vary the placement of the lips on it? If yes, are thesounds same or different?

How many distinct notes can you produce through your multi-note oboe?

Use the observation table to make your observations about different oboes.

Try to check the frequency of the sound produced for each note, download the app Science journalon this link https://play.google.com/store/apps/detai....

— Variations

Oboe made using straws of different stiffness in the material.

A spiral is made along with the oboe to create a spinning "trunk" as you blow through the oboe.

Oboe made with straws of different diameters.



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https://play.google.com/store/apps/details?id=com.google.android.apps.forscience.whistlepunk&hl=en_IN

— Variations

Oboe made with straws of varying length.

Multiple notes on one straw oboe.

If you want to learn, how to make these variations please click on this link Sound - Oboe(Variations).



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https://www.tactivity.in/Guide/Sound+-+Oboe+(Variations)/16#s4298

sound - oboe · oboe made using straws of different stiffness in the material. a spiral is made...

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