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Tripath
Class T was a registered trademark for a 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 (ΔΣ) (or sigma-delta) modulator, with an internal digital clock to co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tripath Amplifier Modules
Class T was a registered trademark for a 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 (ΔΣ) (or sigma-delta) modulator, with an internal digital clock to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virtue Audio
Virtue Audio is 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 two ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Class-D Amplifier
A class-D amplifier or switching amplifier is an electronic amplifier in which the amplifying devices (transistors, usually MOSFETs) operate as electronic switches, and not as linear gain devices as in other amplifiers. They operate by rapidly switching back and forth between the supply rails, being fed by a modulator using pulse width, pulse density, or related techniques to encode the audio input into a pulse train. The audio passes through a simple low-pass filter into the loudspeaker. The high-frequency pulses are blocked. Since the pairs of output transistors are never conducting at the same time, there is no other path for current flow apart from the low-pass filter/loudspeaker. For this reason, efficiency can exceed 90%. History The first Class-D amplifier was invented by British scientist Alec Reeves in the 1950s and was first called by that name in 1955. The first commercial product was a kit module called the X-10 released by Sinclair Radionics in 1964. Howev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cirrus Logic
Cirrus Logic Inc. is an American fabless semiconductor supplier that specializes in analog, mixed-signal, and audio DSP integrated circuits (ICs). Since 1998, the company's headquarters have been in Austin, Texas. The company's audio processors and audio converters feature in audio and consumer entertainment products, including smartphones, tablets, digital headsets, automotive entertainment systems, home-theater receivers, and smart home applications, such as smart speakers. The company has over 3,200 customers including Ford, Harman International, Itron, LG, Lenovo, Onkyo, Marantz, Motorola, Panasonic, Pioneer, Samsung, SiriusXM, Sony, Apple, and Vizio. Suhas Patil founded the company as "Patil Systems, Inc." in Salt Lake City in 1981; it adopted the name "Cirrus Logic" when it moved to Silicon Valley in 1984. Cirrus Logic has more than 3,900 patents issued and pending. History Patil Systems, Inc., was founded in Salt Lake City, Utah, in 1981 by Suhas Patil, and in 1983 ... [...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 as the first "personal supercomputers", reaching speeds of 4 to 20 gigaFLOPS. This was the first existing Macintosh product to be officially shortened as "Mac", and is the last Mac able to boot into classic Mac OS. The enclosure style introduced with the 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. 1st generation: Graphite The original Power Mac G4 was introduced at the Seybold conference in San Francisco on August 31, 1999. There were two variants, officiall ... [...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 Computing *, an HTML element, see HTML5 audio See also *Acoustic (other) *Audible (other) *Audio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bel Canto Design
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BEL can be an abbreviation for: * The ISO 3166-1 alpha-3 country code for Belgium * ''BEL'' or bell character in the C0 control code set * Belarusian language, in the ISO 639-2 and SIL country code lists * Bharat Electronics Limited, an Indian state-owned aerospace and defence electronics company * Bellingham (Amtrak station), Washington, United States; Amtrak station code BEL * Behind Enemy Lines (other) * Val de Cães International Airport 3-letter IATA airport code in Belém, Brazil * The ICAO code for Brussels Airlines, a Belgian airline. See also * Bel (other) * Bell (other) * Belle (other) Belle may refer to: * Belle (''Beauty and the Beast'') * Belle (given name), a list of people and fictional characters * Belle (surname), a list of people Brands and enterprises * Belle Air, a former airline with headquarters in Tirana, Albania ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonneteer (company)
A sonnet is a poetic form that originated in the poetry composed at the Court of the Holy Roman Emperor Frederick II in the Sicilian city of Palermo. The 13th-century poet and notary Giacomo da Lentini is credited with the sonnet's invention, and the Sicilian School of poets who surrounded him then spread the form to the mainland. The earliest sonnets, however, no longer survive in the original Sicilian language, but only after being translated into Tuscan dialect. The term "sonnet" is derived from the Italian word ''sonetto'' (lit. "little song", derived from the Latin word ''sonus'', meaning a sound). By the 13th century it signified a poem of fourteen lines that followed a strict rhyme scheme and structure. According to Christopher Blum, during the Renaissance, the sonnet became the "choice mode of expressing romantic love". During that period, too, the form was taken up in many other European language areas and eventually any subject was considered acceptable for writers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Audio Research
Audio Research Corporation is one of the oldest manufacturers of high-end audio equipment still in operation. They were pioneers at advancing the state-of-the-art for audio reproduction in the 1970s, 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'', they solidified their position as one of the most well-respected audio manufacturers. Many industry observers consider the founder, William Z. Johnson, as one of the true originators of the entire concept of high-end audio as it exists today. History The company was founded by William Zane Johnson in 1970 and was originally located in Minneapolis, Minnesota. Audio Research moved from Plymouth to Maple Grove, MN in August 2018. Johnson began designing custom audio electronics in the early 1950s and was the former owner of Electronic Industries, a specialty audio retail store in Minneapolis until the mid-196 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IMac
iMac is a family of all-in-one Mac desktop computers designed and built by Apple Inc. It has been the primary part of Apple's consumer desktop offerings since its debut in August 1998, and has evolved through seven distinct forms. In its original form, the iMac G3 had a gumdrop or egg-shaped look, with a CRT monitor, mainly enclosed by a colored, translucent plastic case, which was refreshed early on with a sleeker design notable for its slot-loaded optical drive. The second major revision, the iMac G4, moved the design to a hemispherical base containing all the main components and an LCD monitor on a freely moving arm attached to it. The third and fourth major revisions, the iMac G5 and the Intel iMac respectively, placed all the components immediately behind the display, creating a slim unified design that tilts only up and down on a simple metal base. The fifth major revision (mid-2007) shared the same form as the previous model, but was thinner and used anodized a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
EMac
The eMac (short for education Mac) is a discontinued all-in-one Macintosh 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 second-generation LCD 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 iMac G5 that, like the eMac, was exclusively sold to educational institutions. The eMac design closely resembles the first-generation iMac, though the eMac is white, slightly larger in size, and heavier than the preceding G3, weighing .The unique shape of the computer was also similar to the 17-inch CRT Studio Display from 2000 (the last standalone CRT monitor Apple made). The Apple eMac features a PowerPC 7450 (G4e) processor that is significantly faster than t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Mac G4 Cube
The Power Mac G4 Cube is a Macintosh personal computer sold by Apple Computer, Inc. between July 2000 and 2001. Designed by Jonathan Ive, the Cube was conceived by Apple chief executive officer (CEO) Steve Jobs, who held an interest in a powerful, miniaturized desktop computer. Apple's designers developed new technologies and manufacturing methods for the product—a cubic computer housed in clear acrylic glass. Apple positioned the Cube in the middle of its product range, between the consumer iMac G3 and the professional Power Mac G4. The Cube was announced to the general public at the Macworld Expo on July 19, 2000. The Cube won awards and plaudits for its design upon release, but reviews noted the high cost of the machine compared to its power, its limited expandability, and cosmetic defects. The product was an immediate commercial failure, selling only 150,000 units before production was suspended within a year of its announcement. The Cube was one of the rare failures fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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