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Class T Amplifier
Class T was a registered trademark for a class-D amplifier, switching (class-D) audio amplifier, used for Tripath's amplifier technologies (patent filed on Jun 20, 1996). Similar designs have now been widely adopted by different manufacturers. Amplifier The covered products use a class-D amplifier combined with proprietary techniques to control the pulse-width modulation to produce what is claimed to be better performance than other class-D amplifier designs. Among the publicly disclosed differences is real time control of the switching frequency depending on the input signal and amplified output. One of the amplifiers, the TA2020, was named one of the twenty-five chips that 'shook the world" by the ''IEEE Spectrum'' magazine. The control signals in Class T amplifiers may be computed using digital signal processing or fully analog techniques. Currently available implementations use a loop similar to a higher order Delta-sigma modulation, Delta-Sigma (ΔΣ) (or sigma-delta) modul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blaupunkt
Blaupunkt GmbH () was a German manufacturer, producing mostly car-audio gear and other electronic equipment. Owned by Robert Bosch GmbH from 1933 until 1 March 2009, it was sold to Aurelius AG of Germany. It filed for bankruptcy in late 2015 with liquidation proceedings completed in early 2016. The brand, now managed by GIP Development SARL of Luxembourg, is licensed for use by various product groups worldwide such as Air fryers. History Founded in 1924 in Berlin as "Ideal," the company was acquired by Robert Bosch AG in 1933. In 1938 it changed its name to "Blaupunkt", German for "blue point" or "blue dot", after the blue dot painted onto its headphones that had passed quality control. After World War II, Blaupunkt moved its headquarters and production to Hildesheim. Blaupunkt took over a former Philips/ Grundig factory in Portugal to produce automotive head units. It is still owned and operated by Bosch, used exclusively to make OEM units for car manufacturers and 24V ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Audio Amplifiers
Audio most commonly refers to sound, as it is transmitted in signal form. It may also refer to: Sound *Audio signal, an electrical representation of sound *Audio frequency, a frequency in the audio spectrum *Digital audio, representation of sound in a form processed and/or stored by computers or digital electronics *Audio, audible content (media) in audio production and publishing * Semantic audio, extraction of symbols or meaning from audio * Stereophonic audio, method of sound reproduction that creates an illusion of multi-directional audible perspective *Audio equipment Entertainment * AUDIO (group), an American R&B band of 5 brothers formerly known as TNT Boyz and as B5 * ''Audio'' (album), an album by the Blue Man Group * ''Audio'' (magazine), a magazine published from 1947 to 2000 *Audio (musician), British drum and bass artist * "Audio" (song), a song by LSD *"Audios", a song by Black Eyed Peas from ''Elevation'' Computing *HTML audio, identified by the tag See also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virtue Audio
Virtue Audio was a manufacturer of integrated amplifiers based on the Tripath microprocessor chip, also known as a, class-T, class D or switching amplifier. The company produces unusually small, brightly colored, value-priced amplifiers that produce higher wattage than normally found at their price. Design consultants include Roger Sheker, chief engineer for high-end audio companAudience maker of the Auricap capacitor. Principals Virtue Audio was founded in 2005 by Seth Krinsky. Krinsky is said to have purchased thousands of dollars worth of Tripath chips as the chip-maker was entering bankruptcy, even before he had an amplifier designed for them. EngineeMichael Mardisperformed initial design work on the Virtue amplifiers and rejoined the company in 2009. Sheker joined the project after Virtue sourced caps and wire from Audience.Whetstone, Nick Sept. 2008, retrieved 5-13-09 Products The company's core products are the Virtue One and Virtue Two integrated digital amplifiers. The tw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Audio Research
Audio Research Corporation ("ARC") is one of the oldest manufacturers of high-end audio equipment still in operation. The company was known to be a pioneer at advancing state-of-the-art audio reproduction in the 1970s, and for re-introducing the vacuum tube as the primary active amplification device. With the help of reviews in audiophile publications such as ''Stereophile'' and ''The Absolute Sound'', it solidified its position as a well-respected audio manufacturer. Many industry observers consider the founder, William Zane Johnson, as one of the true originators of the entire concept of high-end audio as it exists today. As audio critic Jonathan Valin put it: “Where would the high end be without William Zane Johnson . . . ?” and “As with so many of my generation, he and his creations ''are'' the high end to me – and always will be." History The company was founded by William Z. Johnson in 1970 and was originally located in Minneapolis, Minnesota. ARC moved from P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IMac
The iMac is a series of all-in-one computers from Apple Inc., sold as part of the company's Mac (computer), Mac family of computers. First introduced in 1998, it has remained a primary part of Apple's consumer desktop offerings since and evolved through seven distinct forms. The iMac natively runs the macOS operating system. In its original form, the iMac G3 had a gumdrop, ADM-3A#ADM-3, ADM-3 or Oval#Egg shape, egg-shaped look, with a Cathode ray tube, CRT monitor, mainly enclosed by a colored, Transparency and translucency, translucent plastic case. The computer was, at the time, an inexpensive, consumer-oriented computer that would easily connect to the Internet. The second major revision, the iMac G4, moved a design with a hemispherical base containing all the main components and an Liquid crystal display, LCD monitor on a freely moving arm attached to it. The third and fourth revisions, the iMac G5 and the iMac (Intel-based), Intel iMac, placed all the components immediate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
EMac
The eMac (short for education Mac) is a discontinued all-in-one Mac desktop computer that was produced and designed by Apple Computer. Released in 2002, it was originally aimed at the education market but was later made available as a cheaper mass-market alternative to Apple's "Sunflower" iMac G4. The eMac was pulled from retail on October 12, 2005, and was again sold exclusively to educational institutions thereafter. It was discontinued by Apple on July 5, 2006, and replaced by a cheaper, low-end Intel iMac that, like the eMac, was exclusively sold to educational institutions. The eMac design closely resembles the Snow iMac G3, though the eMac was only available in white, slightly larger in size, did not include a carry handle, and was heavier than the preceding G3, weighing . The unique shape of the computer was also similar to Apple's last CRT-based 17-inch Studio Display, released in 2000 (the last standalone CRT monitor Apple made). The Apple eMac features a Po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Mac G4
The Power Mac G4 is a series of personal computers designed, manufactured, and sold by Apple Computer from 1999 to 2004 as part of the Power Macintosh line. Built around the PowerPC G4 series of microprocessors, the Power Mac G4 was marketed by Apple Inc., Apple as the first "personal supercomputers", reaching speeds of 4 to 20 FLOPS, gigaFLOPS. This was the first existing Macintosh product to be officially shortened as "Mac" (with the exception of the iMac), and is the last Mac able to boot into classic Mac OS with the introduction of macOS, Mac OS X. The enclosure style introduced with the Power Macintosh G3#Blue and White, Power Macintosh G3 (Blue and White) was retained through the entire five-year production run of the Power Mac G4, albeit with significant changes to match Apple's evolving industrial design and to accommodate increasing cooling needs. The G4 and its enclosure were retired with the introduction of the Power Mac G5. Overview The Power Mac G4 is a line of p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Mac G4 Cube
The Power Mac G4 Cube is a Mac personal computer sold by Apple Computer, Inc. between July 2000 and 2001. The Cube was conceived as a miniaturized but powerful computer by Apple chief executive officer ( CEO) Steve Jobs and designed by Jony Ive. Apple developed new technologies and manufacturing methods for the product—a cubic computer housed in clear acrylic glass. Apple positioned it in the middle of its product range, between the consumer iMac G3 and the professional Power Mac G4. The Cube was announced at the Macworld Expo on July 19, 2000. The Cube won awards and plaudits for its design upon release, but reviews noted its high cost compared to its power, its limited expandability, and cosmetic defects. The product was an immediate commercial failure, with only 150,000 units sold before production was suspended within one year of its announcement. The Cube is one of the rare failures for the company under Jobs, after having avoided bankruptcy. However, it influenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apple Computer
Apple Inc. is an American multinational corporation and technology company headquartered in Cupertino, California, in Silicon Valley. It is best known for its consumer electronics, software, and services. Founded in 1976 as Apple Computer Company by Steve Jobs, Steve Wozniak and Ronald Wayne, the company was incorporated by Jobs and Wozniak as Apple Computer, Inc. the following year. It was renamed Apple Inc. in 2007 as the company had expanded its focus from computers to consumer electronics. Apple is the largest technology company by revenue, with billion in the 2024 fiscal year. The company was founded to produce and market Wozniak's Apple I personal computer. Its second computer, the Apple II, became a best seller as one of the first mass-produced microcomputers. Apple introduced the Lisa in 1983 and the Macintosh in 1984, as some of the first computers to use a graphical user interface and a mouse. By 1985, internal company problems led to Jobs leaving to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Home Cinema
A home cinema, also called home theater, is a home entertainment audio-visual system that seeks to reproduce a movie theater experience and mood using consumer grade electronic video and audio equipment and is set up in a private home. In the 1980s, home cinemas typically consisted of a movie pre-recorded on a LaserDisc or VHS tape; a LaserDisc Player or VCR; and a large-screen cathode-ray tube TV set, although sometimes CRT projectors were used instead. In the 2000s, technological innovations in sound systems, video player equipment, TV screens and video projectors changed the equipment used in home cinema set-ups and enabled home users to experience a higher-resolution screen image, improved sound quality and components that offer users more options (e.g., many Blu-ray players can also stream movies and TV shows over the Internet using subscription services such as Netflix). The development of Internet-based subscription services means that 2020s-era home theatre users ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Car Stereo
Vehicle audio is equipment installed in a car or other vehicle to provide in-car entertainment and information for the occupants. Such systems are popularly known as car stereos. Until the 1950s, it consisted of a simple AM radio. Additions since then have included FM radio (1952), 8-track tape players, Cassette decks, record players, CD players, DVD players, Blu-ray players, Automotive navigation system, navigation systems, Bluetooth telephone integration and audio Streaming media, streaming, and smartphone controllers like CarPlay and Android Auto. Once controlled from the dashboard with a few buttons, they can be controlled by steering wheel controls and voice commands. Initially implemented for listening to music and radio, vehicle audio is now part of car telematics, telecommunications, in-vehicle security, handsfree calling, Automotive navigation system, navigation, and Remote diagnostics, remote diagnostics systems. The same loudspeakers may also be used to minimize road ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
