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Robert B. Ingebretsen
Robert B. Ingebretsen (30 March 1948 – 2 March 2003) was a pioneer in the development of digital sound. As a teenager in the 1960s, Ingebretsen built robots and primitive computers that could talk. As a University of Utah graduate student in the early 1970s, Ingebretsen assisted Dr. Thomas G. Stockham in the development of Stockham's restoration technique for sound and images.Stockham, T.G., Jr., T.M. Cannon, and R.B. Ingebretsen, ''Blind deconvolution through Digital Signal Processing'', Proceedings of the IEEE, April 1975. This work led to RCA's Caruso-A Legendary Performer that applied Stockham's restoration techniques to acoustic recordings of opera great Enrico Caruso. Ingebretsen worked with Pixar co-founder Ed Catmull in 1972 to produce one of the first digital films, a 20-second portrait of a human hand.Ingebretsen, Robby, ''First 3D Rendered Film From 1972 and My Visit to Pixar''nerdplusart.com After graduation in 1975, Ingebretsen joined Stockham at Soundstream Inc. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital Sound
Digital audio is a representation of sound recorded in, or converted into, digital form. In digital audio, the sound wave of the audio signal is typically encoded as numerical samples in a continuous sequence. For example, in CD audio, samples are taken 44,100 times per second, each with 16-bit sample depth. Digital audio is also the name for the entire technology of sound recording and reproduction using audio signals that have been encoded in digital form. Following significant advances in digital audio technology during the 1970s and 1980s, it gradually replaced analog audio technology in many areas of audio engineering, record production and telecommunications in the 1990s and 2000s In a digital audio system, an analog electrical signal representing the sound is converted with an analog-to-digital converter (ADC) into a digital signal, typically using pulse-code modulation (PCM). This digital signal can then be recorded, edited, modified, and copied using computers, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital Recording
In digital recording, an audio or video signal is converted into a stream of discrete numbers representing the changes over time in air pressure for audio, or chroma and luminance values for video. This number stream is saved to a storage device. To play back a digital recording, the numbers are retrieved and converted back into their original analog audio or video forms so that they can be heard or seen. In a properly matched analog-to-digital converter (ADC) and digital-to-analog converter (DAC) pair the analog signal is accurately reconstructed per the constraints of the Nyquist–Shannon sampling theorem dependent on the sampling rate and quantization error dependent on the audio or video bit depth. Because the signal is stored digitally, assuming proper error detection and correction, the recording is not degraded by copying, storage or interference. Timeline *October 3, 1938: British telephone engineer Alec Harley Reeves files at the French Patent Office the fir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2003 Deaths
3 (three) is a number, numeral and digit. It is the natural number following 2 and preceding 4, and is the smallest odd prime number and the only prime preceding a square number. It has religious or cultural significance in many societies. Evolution of the Arabic digit The use of three lines to denote the number 3 occurred in many writing systems, including some (like Roman and Chinese numerals) that are still in use. That was also the original representation of 3 in the Brahmic (Indian) numerical notation, its earliest forms aligned vertically. However, during the Gupta Empire the sign was modified by the addition of a curve on each line. The Nāgarī script rotated the lines clockwise, so they appeared horizontally, and ended each line with a short downward stroke on the right. In cursive script, the three strokes were eventually connected to form a glyph resembling a with an additional stroke at the bottom: ३. The Indian digits spread to the Caliphate in the 9th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1948 Births
Events January * January 1 ** The General Agreement on Tariffs and Trade (GATT) is inaugurated. ** The Constitution of New Jersey (later subject to amendment) goes into effect. ** The railways of Britain are nationalized, to form British Railways. * January 4 – Burma gains its independence from the United Kingdom, becoming an independent republic, named the ''Union of Burma'', with Sao Shwe Thaik as its first President, and U Nu its first Prime Minister. * January 5 ** Warner Brothers shows the first color newsreel (''Tournament of Roses Parade'' and the ''Rose Bowl Game''). ** The first Kinsey Reports, Kinsey Report, ''Sexual Behavior in the Human Male'', is published in the United States. * January 7 – Mantell UFO incident: Kentucky Air National Guard pilot Thomas Mantell crashes while in pursuit of an unidentified flying object. * January 12 – Mahatma Gandhi begins his fast-unto-death in Delhi, to stop communal violence during the Partition of India. * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salt Lake City, Utah
Salt Lake City (often shortened to Salt Lake and abbreviated as SLC) is the Capital (political), capital and List of cities and towns in Utah, most populous city of Utah, United States. It is the county seat, seat of Salt Lake County, Utah, Salt Lake County, the most populous county in Utah. With a population of 200,133 in 2020, the city is the core of the Salt Lake City metropolitan area, which had a population of 1,257,936 at the 2020 census. Salt Lake City is further situated within a larger metropolis known as the Salt Lake City–Provo–Orem Combined Statistical Area, Salt Lake City–Ogden–Provo Combined Statistical Area, a corridor of contiguous urban and suburban development stretched along a segment of the Wasatch Front, comprising a population of 2,746,164 (as of 2021 estimates), making it the 22nd largest in the nation. It is also the central core of the larger of only two major urban areas located within the Great Basin (the other being Reno, Nevada). Salt Lake C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heart Failure
Heart failure (HF), also known as congestive heart failure (CHF), is a syndrome, a group of signs and symptoms caused by an impairment of the heart's blood pumping function. Symptoms typically include shortness of breath, excessive fatigue, and leg swelling. The shortness of breath may occur with exertion or while lying down, and may wake people up during the night. Chest pain, including angina, is not usually caused by heart failure, but may occur if the heart failure was caused by a heart attack. The severity of the heart failure is measured by the severity of symptoms during exercise. Other conditions that may have symptoms similar to heart failure include obesity, kidney failure, liver disease, anemia, and thyroid disease. Common causes of heart failure include coronary artery disease, heart attack, high blood pressure, atrial fibrillation, valvular heart disease, excessive alcohol consumption, infection, and cardiomyopathy. These cause heart failure by altering ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centerville, Utah
Centerville is a city in southeastern Davis County, Utah, United States. Centerville is part of the Ogden-Clearfield Metropolitan Statistical Area. The population was 15,335 at the 2010 census. It is located adjacent to the easternmost part of the Great Salt Lake. History Centerville was first settled by Thomas Grover in the fall of 1847. The community was originally known as Deuel Settlement but was renamed to Cherry Creek after the Cherry family arrived. After an 1850 survey found the town was located precisely between Farmington and Bountiful, it became known as Centerville, and it was this name that stuck. * In 1849, Shadrach Roundy's family farmed in the general vicinity of Centerville, and in the winter of 1849 he built a grist mill on Deuel Creek. He also made molasses from corn stalks at this mill.Jenson. ''Encyclopedic History''. p. 127 *In 1851, a log school house was built in Centerville but was replaced by an adobe building in 1854 by a much larger building in 18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Academy Of Motion Picture Arts And Sciences
The Academy of Motion Picture Arts and Sciences (AMPAS, often pronounced ; also known as simply the Academy or the Motion Picture Academy) is a professional honorary organization with the stated goal of advancing the arts and sciences of motion pictures. The Academy's corporate management and general policies are overseen by a board of governors, which includes representatives from each of the craft branches. As of April 2020, the organization was estimated to consist of around 9,921 motion picture professionals. The Academy is an international organization and membership is open to qualified filmmakers around the world. The Academy is known around the world for its annual Academy Awards, now officially and popularly known as "The Oscars". In addition, the Academy holds the Governors Awards annually for lifetime achievement in film; presents Scientific and Technical Awards annually; gives Student Academy Awards annually to filmmakers at the undergraduate and graduate level; ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Academy Award, Scientific Or Technical
The Scientific and Technical Awards are three different Honorary Awards that are given by the Academy of Motion Picture Arts and Sciences (AMPAS) during the annual Academy Awards season. The Awards have been presented since the 4th Academy Awards in November 1931, to recognize original developments resulting in significant improvements in motion picture production and exhibition. The Awards are presented at a formal dinner ceremony a couple weeks before the principal Academy Awards ceremony. These awards recognize significant milestones in the development of technology for motion pictures and are conferred by vote of the Academy Board of Governors. Potential nominations for awards are investigated by a special committee within the Academy, "The Scientific and Technical Awards Committee", which presents a written report and recommendation to the Board of Governors. Additionally, the John A. Bonner Medal of Commendation, given for "outstanding service and dedication in uph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fantasia (1940 Film)
''Fantasia'' is a 1940 American animated musical anthology film produced and released by Walt Disney Productions, with story direction by Joe Grant and Dick Huemer and production supervision by Walt Disney and Ben Sharpsteen. The third Disney animated feature film, it consists of eight animated segments set to pieces of classical music conducted by Leopold Stokowski, seven of which are performed by the Philadelphia Orchestra. Music critic and composer Deems Taylor acts as the film's Master of Ceremonies who introduces each segment in live action. Disney settled on the film's concept in 1938 as work neared completion on ''The Sorcerer's Apprentice'', originally an elaborate '' Silly Symphony'' cartoon designed as a comeback role for Mickey Mouse, who had declined in popularity. As production costs surpassed what the short could earn, Disney decided to include it in a feature-length film of multiple segments set to classical pieces with Stokowski and Taylor as collaborators ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walt Disney Pictures
Walt Disney Pictures is an American film production company and subsidiary of Walt Disney Studios, which is owned by The Walt Disney Company. The studio is the flagship producer of live-action feature films within the Walt Disney Studios unit, and is based at the Walt Disney Studios in Burbank, California. Animated films produced by Walt Disney Animation Studios and Pixar Animation Studios are also released under the studio banner. Walt Disney Studios Motion Pictures distributes and markets the films produced by Walt Disney Pictures. Disney began producing live-action films in the 1950s. The live-action division became Walt Disney Pictures in 1983, when Disney reorganized its entire studio division; which included the separation from the feature animation division and the subsequent creation of Touchstone Pictures. At the end of that decade, combined with Touchstone's output, Walt Disney Pictures elevated Disney to one of Hollywood's major film studios. Walt Disney Pictur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
