Codec Essay Introduction: This Essay will discuss Codecs; it will explain the definition of codecs and their functions and include a brief history on digital signals, equipment and standards. It will also discuss compression and compression formats such as Lossless and Lossy and files such as FLAC and ALAC History of Codecs: Equipment The history of audio recording first started on 6th December 1877 when Thomas Edison made the very first recording of a human voice singing Mary had a little lamb “on the first tinfoil cylinder phonograph” (Schoenherr, 2005). Later that month John Kruesi built the first practical machine using this equipment from a sketch given by Edison, however it was Edison and his tinfoil phonograph which was the first to succeed in recording the human voice. Development of recording devices continued throughout the late 19th century with disc-style gramophones and phonographs being the most popular for recording for not only the human voice but also for music. 1905 Victrola was recognised as the “industry’s premiere disc phonograph” (VLE, 2008). This was also the time when the 78 RPM disc became standard (Holmes, 2006). In the 1920’s a combination of amplified systems, electrical recording and advent of magnetic recording helped drive on the recording industry for the next couple of centuries. For example in 1963 the audio cassette tape format was introduced and became popular amongst audio enthusiasts. Sony then developed the first digital recording device in 1978 and this was used mainly by professional studio users. The first commercial digital audio player which used compact discs became available in 1988 followed by mini discs in 1992. Digital audio players which used the MP3 format became highly successf... ... middle of paper ... ... due to mismatched impedances or reflections in the signal path” (Smith, 2013). Another cause could be an “electromagnetic interference and crosstalk with other signals” (Rouse, 2008) as a result events could happen where a computer can’t perform at its best due to the fact it cannot process some many signals at once and could result in data being lost between network devices Codec Diagram: In this diagram the sound source starts at the microphones the reason there are two mics is because a microphone has only one channel so in order to get a stereo output we have two mics. They then get revamped in terms of converting the signal from analogue to digital through encoders and decoders. The signal travels into a port interface and then travels back around again and again is encoded and decoded for us to then be able to listen to the output through our headphones.
Web. 15 Feb. 2014. <http://www.sciencetech.technomuses.ca/english/collection/disk_play.cfm>. Edie, Paul C. "History of the Victor Phonograph." The Victor-Victrola Page.
In 1904 Eugene Lauste successfully recorded sound onto a piece of photographic film. This invention was known as a “Sound Grate” the results where still far to crude to be used to public display.
Although Thomson set up the first electric system, it was Edison who invented the phonograph in eighteen seventy-seven. Editors at Scientific American, who were some of the first to experience Edison's newest creation, were startled. "The machine began by politely inquiring as to our health, asked how we liked the phonograph, informed us that it was very well, and bid us a cordial good night." (RCA Online 2)
Anderson, Rick. "Johann Adolf Hasse. (Sound Recording Reviews)." Notes 58.4 (2002): 902. Academic OneFile. Web. 14 Mar. 2014.
The Use of Electronic Technology in 20th and 21st Century Music In this essay, I have examined the use of electronic technology within 20th and 21st Century music. This has involved analysis of the development and continuing refinement of the computer in today’s music industry, as well as the theory of the synthesiser and the various pioneers of electronic technology, including Dr. Robert Moog and Les Paul. Also within the essay, I have discussed the increasing use of computers in the recording studio. The computer has become an indispensable tool in ensuring that both recording and playback sound quality is kept at the maximum possible level. Many positive ideas have come from the continued onslaught of computerisation.
fed into a DTS decoder, of which several DTS equipped consumer receivers and processors exist, you get a high quality 5.1 music format. Many people don't realize that there is a viable 5.1 music format available today with a catalog of a couple hundred popular CDs available.
The word turntable is the modern term used to describe what is known as the phonograph, gramophone, or record player. The first turntable was invented by Thomas Edison in 1877. It was the first device used for recording and playing back sounds. Modern turntables have the same fundamental components as their ancestors, albeit slightly more sophisticated in design. This paper covers the fundamental technical aspects of modern turntables.
1980s, Audio CD Is Invented Sony and Phillips invent audio CD. 1980 was the ‘golden age’ of several performing acts such as Duran Duran, Prince and
and it is that it is a transducer. A transducer is a device that converts one form of energy into another. There is two types a microphone can be, it can be dynamic or it can be condenser. What the microphone does when it is a dynamic microphone is that when you talk into
... of the carbon microphone that make is so distinct from all other electronic sender tones. With the combination of the real sound of a voice passing through the carbon microphone fused with the technology we have today, the model that is created by Oksanen and Valimaki and used by a range of producers “incorporates a filtered noise source to model the self-induced noise generated by the carbon microphones” (Oksanen, Valimaki 27). With the scientific ability our world has today, we are able to recreate a sound that was first discovered over a century ago. The development of the carbon button microphone definitely makes a statement about our ever-changing technological society. Although it was an object invented many years ago during the Second Industrial Revolution, it has been altered and improved and has therefore left an everlasting impact on our society.
Most of the applications in terms of speech and audio compression may seem obvious at first, but what most do not realize is the scale at which it is used. Some of the more common examples include: telephone communications, compact disc players in the form of digital audio coding, stereo sound systems, speech recognition and playback, noise reduction/filtering after voice recognition and speech synthesis [1]. The uses of DSP for speech and audio compression is certainly not limited to these examples, but just these alone are examples that the general public use through various devices on a daily basis often without realizing the function of the systems and processes that go into their operation.
Examples will shows us like the digital recording mean like as the floppy disks and hard disk drives. Both are the digital recording and been carried out for likes the tapes.
The first type of music player that was made was called the Phonograph. It was created by Thomas Edison in 1877. With the Phonograph you could record music and it would play it back to you. The sound on the Phonograph wasn’t the greatest, but it was the first one around so they had to start from somewhere. The phonograph was pretty popular but people stopped buying them because they already had one.
” In 1930, RCA Victor launched the first commercially-available vinyl long-playing record” (About Vinyl Records 2). Vinyl records are round plastic discs that have about a 12-inch diameter. To listen to a vinyl record, you have to place it on a record player, which was invented in 1877. The record player was introduced by Thomas Edison and is a more updated and improved version of ...
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.