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Speaker presentation

Transcript: Aviv Acco Ms. Childress Science I 30/3/2019 Electromagnetic Devices Project Speaker History History of the speakers Since the dawn of history, at least since the dawn of record history, people have sung, played and listened to music. Until the beginning of the twentieth century, the only way to listen to music was to participate in live concerts, including musicians singing and playing musical instruments. Inventors Towards the end of the nineteenth century and the beginning of the twentieth century, a number of inventions were developed, these allowed listening to recorded and reconstructed music. Inventors Alexander Graham Bell The first invention, which is the basis for all the recording and playback systems of music, is the phone. The phone is a device for receiving, transmitting and playing sounds and sounds - or transmitting speech between two points via wires. The invention and development of a number of people paved the way for the invention of the telephone. The improved phone patent was registered by Alexander Graham Bell in the United States in the mid-1870's. Ernst Siemens In 1920, Ernst Siemens released an advanced version of the speakers, that was developed based on a vacuum tube or radio tubes and tubes or valves. This electronic amplification enabled the first electronic recording devices, which were magnetic wire records or wire records, in which the recording was made on a wire of magnetic metal. Function Speakers Function Speakers are a very useful device it's purpose is to take an amplified signal and turn it into sound. The function of loud speaker is to convert an electrical wave into a mechanical wave - sound. Speakers comes in pairs, it allows them to produce stereo sound. Both left and right speakers transmit audio on two separate channels, since we use to hear sounds from the left and right at the same time, by using two speakers, the sound is more natural. How it performs... How it perform Speakers are transducers that convert electromagnetic waves into sound waves. Inside the speaker there is electromagnet: a metal coil which creates a magnetic field when an electric current flows through it. This coil is like a permanent magnet, but it can revers the direction of the current in the coil and flips the poles of the magnet. When the pulses of electricity pass through the coil of the electromagnet, the direction of its magnetic field is rapidly changed. The electromagnet is attached to a cone made of a flexible material than it amplifies these vibrations, pumping sound waves into the surrounding air and towards our ears. Diagram Diagram Uses of Speakers Electric Devices Phones Music Uses Electric Devices Electric Devices There are so many electronic devices who use speakers: from our home stereo - to hear music, listen to the radio, play the computer, or on the big screen - the cinema. Phones and talking devices The telephone was the first invention that used speakers, since then we use speakers to talk and communicate from far or near distances. Phones Live music Today speakers allow us to listen to music in a good quality eve if the singer or band are on the big stage far way. The good qualities of the speakers brings us pure sound from very far away - is if the band is standing just near to us. Music Works Cited Work cited

Speaker Presentation

Transcript: By Ann and Olivia Design Sketch Explore Create Try it Out Make it Better Speaker Presentation While researching for our speaker, we found that sound energy can be chemical, nuclear, gravitational, or mechanical. We also learned sound is produced when something vibrates. The waves travel through a medium such as solids, liquids or gasses. They move through by vibrating the molecules of the matter. To make our design better we would make our sides (the cube) shorter because the relationship between our coil and battery, wasn't close enough. Once Mr.DeVier-Scott & Mr. Stansberry advised us to put our coil and battery closer together. Doing this caused the sound quality became really clear. Final Product Identify the Problem We based our design on the speaker shown to us. We used reverse engineering to discover the purpose of every material we needed to use to create our speaker. We learned that the purpose of the cone was to expand the sound . For our design we used the metal can as our base. We wrapped our coil around the paper tube 60 times. Our challenge was to use reverse engineering to design and build a speaker that can produce audible sound from an iPad or iPod. For our speaker construction, we were limited in materials such as: insulated wire, Scotch tape, a permanent magnet, a 2 oz. tin with it's lid, cardstock, an iPad, iPod, or iPhone, and an amplifier In the Works When we first tested ours out the sound was very dissorted and very quiet. When building our speaker we ran into a couple problems. First off, we had a problem wrapping our coil around the paper tube. We tried upwards of 20 times. Originally, we used the thick wire but, after thinking over why our wire wouldn't stay wrapped wee switched to the thin one. Another challenge we faced was the actual construction of the speaker. We had a problem with the paper cube. When we tested the first time, our sound was very faint. Once we reevaluated our design we figured out the cube was the problem. We made the square shorter and it seemed to work.

Speaker presentation

Transcript: Company Logo Speaker BY Jaz and Jenard What our Artifact does. Our invention is a speaker.It can only do one thing.The one thing is to make things louder. Facts about speaker The purpose of a Speaker The purpose of the speaker is to make things louder.It can make your phone, radio and other electronics.For example if you want to play music but it is not loud enough you can use a speaker to make it louder. The purpose of a Speaker Invented and Inventor Inventor The inventors is Peter L. Jensen,Edwin S. Pridham,Werner von Siemens Invented The speaker is invented in 1876. Before it was used to make speakers (presenters) louder. Now it is used to make speakers and sound louder Before and Now Before and Now Innovation The innovation of speakers is a Phonograph. it is a brass horn with a wax cylinder. Innovation Artifact about our technology Energy and Power are areas of technology best classifies the speaker Artifact Positive The positive thing of a speaker is, it makes things louder. Positive Negative The negative things are, it can bother neighbors, it can blow your eardrums.There are other negative things about the speaker. Negative Chart Chart Example Science Technology Engineering Math Inside a speaker, an electromagnet is placed in front of a permanent magnet. The permanent magnet is fixed firmly into position where as the electromagnet is mobile. As pulses of electricity pass through the coil of the electromagnet, the direction of its magnetic field is rapidly changed. Technology Speakers. ... Many of our STEM Speakers (Science, Technology, Engineering, Mathematics) are renowned entrepreneurs, researchers, strategists and forecasters with their eyes on the latest innovations in cloud computing, social media, communication platforms, IT, knowledge networks, medical technology and beyond. The math of the speaker is how it can make sounds.Or how it can connect to your phone without pluging your phone in or play a tape or CD. Quote and Video Quote “We do not stand in any experience which we have had, we do not stand in any progress which we have made, we do not stand in our success in the battle against sin. We stand in the grace of our Lord Jesus Christ, by which he has justified us.” Quote By Peter L. Jensen websites and book Websites pictures pictures Video Video

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