The great invention of the microphone What would you do if you were a singer and there wasn’t anything that could not project your voice in a large building? They do not have to worry since the microphone was invented. Furthermore, did you know that the microphone changed the way we build buildings? We build it now for size, not so that the main thing was for the sound to bounce of the walls so that we could hear in the back. Therefore, how does this invention work or function anyways? The microphone is a device that is called a transducer. A transducer is a device that converts the sound energy into an electrical energy. It converts acoustic power into electric power that has essentially …show more content…
Hughes had his own idea of making the microphone better. His device was early for the various carbon microphones which are now in use. Soon the invention of the radio was created, which led to new broadcasting microphones being created. Then the ribbon microphone was invented in 1942 for radio broadcasting. In 1964, Bell Laboratories researched and later on, James West and Gerhard Sessler received patent no. 3,118,022 for the electroacoustic transducer, an electric microphone. James West's research in the early 1960s led to the development of the foil-electret transducers for sound recording and voice communication that are used in 90% of all microphones built today and at the heart of most new telephones being …show more content…
If the crests of the two waves rise at the same time and place, the waves are said to be in phase and reinforce each other to produce a louder sound. This is called constructive interference. This occurs when the two sources of the sound are separated by exactly one full wavelength. (One wave gets a one wavelength head start, but both are in phase at the detector. Therefore the knowledge of this device is that the wavelength and the frequency of the sound, therefore it could be easy to determine its velocity according to the relationship v = f. Microphones produce a very small amount of current, which makes sense when you consider just how light the moving parts must be to accurately follow sound waves. To be useful for recording or other electronic processes, the signal must be amplified by a factor of over a thousand. Any electrical noise produced by the microphone will also be amplified, so even slight amounts are intolerable. Dynamic microphones are essentially noise free, but the electronic circuit built into condenser types is a potential source of trouble, and must be carefully designed and constructed of premium
“When it comes to life, the critical thing is whether you take things for granted, or take them with gratitude.” This quote by G. K. Chesterson, representing people’s struggle to show future generations what life was like by preserving classics. This is shown by the phonograph in “The Portable Phonograph” by Walter Van Tilburg Clark. “The Portable Phonograph” has many examples of symbolism including the portable phonograph, the needle, the records, the lead pipe, the books, and elements of setting including the prairie, the cell and the cell block, and the black cloud strips.
Radio waves were first discovered in 1887, but radio itself was initially invented by Italian Guglielmo Marconi in 1895 (1). His biggest mentioned success was in 1901, when he managed to broadcast the letter “S” across the Atlantic Ocean (1). However, he focused primarily on point-to-point transmissions, not large scale broadcasts from one point (F). As such, three American inventors - Lee De Forest, Edwin Howard Armstrong, and David Sarnoff - took credit for making radio as it is today a success (F). De Forest was born and raised in Alabama and he thought of everything in terms of patents and eventually held more than 300, but many claimed that he simply stole the inventions of others (2). In 1900, he patented a device to enhance weak signals and in 1902, he formed the De Forest Wireless Telegraph Company (1). In the same year. Reginald Fessenden, a Canadian, invented the “electrolytic detector”, which later became the spade detector that brought De Forest so much fame (F). In 1904, John Fleming invented the oscillation valve, which later became De Forest’s audion, and De Forest won the gold medal at the St. Louis World’s Fair for his “spade detector” (F). De Forest gained quite a bit of fame by broadcasting music live from the Eiffel Tower and from the Metropolitan Opera; however, many believed that this was a scam and that he had actually had the device broadcasting the signal only a few blocks away (F). In 1906, he envisioned bringing music and voices to all American households, but as it turns out Canadian inventor Fessenden had already broadcasted a Christmas greeting and music to the crew of a ship off the coast of Canada on Christmas Eve a year earlier (F). In 1912, Armstrong became prominent by inventing regeneration, wh...
The telephone was said to be invented by Alexander Graham Bell, some critics believe that the real inventor was a man named Elisha Gray. After many debates people commonly now believe that Alexander Graham Bell invented the first telephone. Inspired by his deaf parents he wanted to invent something that people could use easily and was easy to access. So he worked on his invention day and night for many days. Eventually He got the perfect thing that he had been looking for. He had finally invented a device that you could hear human voices through technology. On March 7, 1876 after all of Alexander G. Bell’s hard work he patented his great invention...
It was proposed that if the length of the PVC pipes were to increase, then the sound produced will have a lower amplitude each time because the sound will lose energy as it continues in the pipe for a certain amount of time. However, the data actually showed that with every increase in pipe length, the amplitude got louder as well, thus refuting the hypothesis. These results made sense because what was created inside the PVC pipes was a standing still sound wave, or a resonance wave. These kinds of waves have certain locations on its wavelength in order for the change in sound to be heard, which it usually half a wavelength. With this, the tuning fork is 83.3Hz and a usual wavelength is about 300Hz, 300/83.3 = 3.6 meters, which is about 4 meters (half = 2 meters). So for the change in sound to be heard, the pipes had to be about 2 meters in change according to the frequency of the tuning
Ever since time began, Humans have circled the Earth searching for riches, land and to unravel the mysteries of the universe. When Humans see something they desire, they do whatever it takes, by sword, persuasion, or negotiation to achieve it. Moreover every moment of mankind 's existence is spent trying to become stronger than their neighbor and even nature itself. Since its dawning, mankind has always been a war ragging race. Moreover, the smarter this race thinks they get, the more they take for granted of what the beautiful creator has given them. Along with that, every human lives a technology filled life, it is as if the entire race has been disconnected from the natural giving planet around them. Nevertheless, if one mistake stands above all, it is their lack of knowledge of their own history. No matter how many times mankind makes a fatal mistake they never learn from it and within a decade they repeat the process again. Walter Clark 's "the Portable Phonograph" perfectly shows how humans take
Before 1925 recordings were made with an acoustical horn that would capture the sound of the musicians in front of it and transferred the vibration to a cutting stylus. No electricity was used. This process was called the acoustical process. In 1925, microphones were introduced to transfer the acoustical energy to an electric signal, which fed the cutting stylus. This electrical process ameliorated recordings sound.
The cylinder phonograph proved to be successful, but the problem with the machine was that the tin foil only allowed a few uses. With the help of another great inventor, new advances could be made to improve this invention. The inventor of the telephone, Alexander Graham Bell, had set up a laboratory for his cousin, Chichester Bell and Charles Tainter. Bell a...
Ultrasound is sound waves that have a frequency above human audible. (Ultrasound Physics and Instrument 111). With a shorter wavelength than audible sound, these waves can be directed into a narrow beam that is used in imaging soft tissues. As with audible sound waves, ultrasound waves must have a medium in which to travel and are subject to interference. In addition, much like light rays, they can be reflected, refracted, and focused.
As said above, both light and sound waves have to do with interference. In sound, interference affects both the loudness and amplitude. When two waves’ crests overlap, the amplitude increases. The same is true with the troughs of the waves, which decrease the amplitude.
On March 10th, 1876, a revolutionary invention was created by Alexander Graham Bell. The telephone was invented to send vibrations from one receiver to another electrically (History.com ‘Speech Transmitted by Telephone’ accessed on March 11, 2014), and due to Alexander Graham Bell accidentally discovering that he could hear the sound of a ‘clock spring twanging’ (Marry Bellis, ‘The History of the Telephone’ accessed on March 11, 2014), that was possible. The invention of the telephone permitted new levels of communication, allowed families connect around the world, and improved military systems, but also served negative consequences, such as breached privacy. If two people wanted to have a conversation, they would have to write letters back and forth, but with the telephone they were able to pick up the receiver, dial the number, and be connected in a matter of minutes. Telephones enabled long-distance communication, which allowed families to converse despite their location. Military officials and soldiers were also able to stay in touch through field telephones as well as keep contact with the president. Although telephones were originally placed in general stores or other major city locations and homes/neighborhoods that were wired (Elon.edu ‘World Changes Due to the Telephone’ accessed on April 2, 2014), telephones became commonly used in homes in the early twentieth century when telephones began to connect internationally.
The voice is our primary mean of communication and expression. We rarely last more than a few minutes without its use whether it is talking to someone else or humming quietly to ourselves. We can use the voice artistically in many ways. For example, singing carries the rhythm and melody of speech. It creates patterns of pitch, loudness, and duration that tie together syllables, phrases and sentences. We use the voice for survival, emotion, expression, and to reflect our personality. The loss of the voice is a severe curtailment to many professions. It is affected by general body condition which is why we need to consider the location of the larynx and how that organ produces voice. Surprisingly, this complex biological design is mechanical in function. It is mechanical to the point that when it has been excised from a cadaver and mounted on a laboratory bench, the larynx produces sounds resembling normal phonation. (Titze, Principles)
2013. The. Recording Manual - Construction. [online] Available at: http://www.johnlsayers.com/Recmanual/Titles/Acoustics3.htm [Accessed: 25 Nov 2013].
Many inventions have impacted the world throughout history but in my opinion one of the most impactful one’s was the invention of the radio . This invention provided society with many things which include entertainment, communication, and easier access to information. Radio is still a central part of the society today but just like any other invention radio has an interesting history of how it progressed through time.
Produced sound from speakers has become so common and integrated in our daily lives it is often taken for granted. Living with inventions such as televisions, phones and radios, chances are you rarely ever have days with nothing but natural sounds. Yet, few people know the physics involved in the technology that allows us to listen to music in our living room although the band is miles away. This article will investigate and explain the physics and mechanism behind loudspeakers – both electromagnetic and electrostatic.
Despite the short amount of time since the introduction of the smartphone, the rapid development of the software and technology has had a tremendous effect on the everyday life of society today. The concept of communicating through a telephone was developed in the 1870s. Devices to transmit speech electrically were designed by Elisha Gray and Alexander Graham Bell, but Bell's design was patented first. On March 10, 1876, Alexander Graham Bell achieved one of his greatest successes in the making of the telephone. This brought upon a major change in communication and gave leeway to the improvement of the telephone in the days to come (Bellis, 2013b).