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DYNAS
DYNAS (from ''Dynamic Selectivity'') is a dynamic analog filtering and tuning technology to improve the reception of FM radio broadcasts under adverse conditions. Overview The trademarked DYNAS system is based on the same principles as the ''In Channel Select'' (''ICS'') system by H.u.C. Elektronik. The novel tracking filter arrangement was originally conceived by the German engineer Jens Hansen in 1982. The concept was prototyped as ''High Select'' in summer 1983. With funding from innovation funds of the city of Berlin, Hansen left Bosch/Blaupunkt to start, with companion Klaus Müller-Catito, his own company H.u.C. Elektronik in 1984. When licensing negotiations with his former employer failed, the system was marketed in the early 1990s as DYNAS by the German Telefunken electronic (a spin-off of AEG-Telefunken and DASA, firming as since 1992), who, with the related (the former AEG-Telefunken Halbleiterwerk in Heilbronn), also designed integrated circuits implementing the sy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intermediate Frequency
In communications and electronic engineering, an intermediate frequency (IF) is a frequency to which a carrier wave is shifted as an intermediate step in transmission or reception. The intermediate frequency is created by mixing the carrier signal with a local oscillator signal in a process called heterodyning, resulting in a signal at the difference or beat frequency. Intermediate frequencies are used in superheterodyne radio receivers, in which an incoming signal is shifted to an IF for amplification before final detection is done. Conversion to an intermediate frequency is useful for several reasons. When several stages of filters are used, they can all be set to a fixed frequency, which makes them easier to build and to tune. Lower frequency transistors generally have higher gains so fewer stages are required. It's easier to make sharply selective filters at lower fixed frequencies. There may be several such stages of intermediate frequency in a superheterodyne receiver; t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Analog Filter
Analogue filters are a basic building block of signal processing much used in electronics. Amongst their many applications are the separation of an audio signal before application to bass, mid-range, and tweeter loudspeakers; the combining and later separation of multiple telephone conversations onto a single channel; the selection of a chosen radio station in a radio receiver and rejection of others. Passive linear electronic analogue filters are those filters which can be described with linear differential equations (linear); they are composed of capacitors, inductors and, sometimes, resistors (passive) and are designed to operate on continuously varying analogue signals. There are many linear filters which are not analogue in implementation (digital filter), and there are many electronic filters which may not have a passive topology – both of which may have the same transfer function of the filters described in this article. Analogue filters are most often used in wav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bandwidth (signal Processing)
Bandwidth is the difference between the upper and lower frequencies in a continuous band of frequencies. It is typically measured in hertz, and depending on context, may specifically refer to ''passband bandwidth'' or ''baseband bandwidth''. Passband bandwidth is the difference between the upper and lower cutoff frequencies of, for example, a band-pass filter, a communication channel, or a signal spectrum. Baseband bandwidth applies to a low-pass filter or baseband signal; the bandwidth is equal to its upper cutoff frequency. Bandwidth in hertz is a central concept in many fields, including electronics, information theory, digital communications, radio communications, signal processing, and spectroscopy and is one of the determinants of the capacity of a given communication channel. A key characteristic of bandwidth is that any band of a given width can carry the same amount of information, regardless of where that band is located in the frequency spectrum. For example, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conrad Electronic
Conrad Electronic SE is a German retailer of electronic products based in Hirschau. Company profile The company was founded in Berlin in 1923 by Max Conrad, and moved to Hirschau in 1946, where it was led by Max Conrad's son Werner. In 1973, directorship of the company WERCO was passed on to his son , then aged 37. The company subsequently became Conrad-Elektronik. In 1997, Klaus Conrad handed over directorship to his son Werner Conrad. Product range The product range is focused on consumer and specialist electronics lines, including computing equipment, multimedia, modeling, home automation, tools, electronic components, batteries and power and motoring products. International offices In addition to the Conrad group's headquarters in Germany, there are local offices in France, Slovakia, Sweden, Switzerland, Italy, the Netherlands covering the entire Benelux region and Austria, which also covers the United Kingdom. Partnerships exist with companies in Hungary, Poland, Slo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clarion (company)
is a Japanese manufacturer of car audio, automotive navigation systems, AutoPCs, visual equipment, bus equipment, and communication equipment. It is since 2019 fully owned by Faurecia Clarion Electronics. Up until the end of 2005, products in Japan were marketed under the brand name AddZest, while outside Japan the same product typically carried the Clarion name brand. This was changed in 2006, and the brand "Clarion" along with a redesigned logo are now used worldwide. It is known for its close relationship with Nissan, which uses Clarion products almost exclusively in its vehicles. Nissan once owned a 6.25% share in Clarion, although that was reduced in 2002. Clarion has an OEM relationship with many automotive companies, providing car headunits and components to them for their production vehicles. Clients include Saab Automobile, Suzuki, Ford, Volkswagen, Proton, Toyota, Subaru, and Peugeot. A contest is held annually to select the Clarion Girl, who is chosen to represen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alpine Electronics
is a Japanese consumer electronics subsidiary of the Japanese electronics component manufacturer Alps Electric, specializing in car audio and navigation systems. Established in 1967 as Alps-Motorola — a joint venture between Alps Electric and U.S.-based Motorola — it became Alpine Electronics, Inc. in 1978 when Alps bought out Motorola's share of the company. Alpine's engineering headquarters are in Iwaki, Fukushima Prefecture, Japan. Alpine also has manufacturing facilities in Brazil, Hungary, Mexico, China, and Thailand. In 2006, 76% of Alpine's revenues came from OEM sales. Honda have offered unbranded audio systems manufactured by Alpine, and companies such as Dodge and Jaguar Cars have offered co-branded Alpine audio systems in their vehicles. Products and technologies *1981- World's first automotive navigation system, created for Honda as the Electro Gyrocator. *1982 - World's first in-car computerized equalizer. *1983 - Alpine introduces their first remo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Car Radio
Vehicle audio is equipment installed in a car or other vehicle to provide in-car entertainment and information for the vehicle occupants. Until the 1950s it consisted of a simple AM radio. Additions since then have included FM radio (1952), 8-track tape players, cassette players, record players, CD players (1984), DVD players, Blu-ray players, navigation systems, Bluetooth telephone integration, and smartphone controllers like CarPlay and Android Auto. Once controlled from the dashboard with a few buttons, they can now 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, telecommunication, in-vehicle security, handsfree calling, navigation, and remote diagnostics systems. The same loudspeakers may also be used to minimize road and engine noise with active noise control, or they may be used to augment engine sounds, for instance making a smaller engine sound bigger. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onkyo
is a Japanese consumer electronics company, specializing in premium home cinema and audio equipment, including AV receivers, surround sound speakers and portable devices. The word ''Onkyo'' translates as "sound resonance". ''On'' () is from Chinese pronunciation, with traditional Japanese pronunciation as ''Oto'', meaning "the sound". ''Kyo'' () is also from Chinese pronunciation, pronounced as ''Hibiki'' (noun) or ''Hibiku'' (verb) in traditional Japanese, meaning "resound, sound, or echo". The company started under the name of Osaka Denki Onkyo K.K. in 1946 (a company not related to Nippon Denki Onkyo, which became Denon). The current Onkyo Corporation umbrella includes the Integra and Integra Research divisions as well as the main Onkyo brand. History In March 2015, Onkyo purchased Pioneer Corporation's Home Electronics Corporation, which produces home cinema amplifiers, Blu-ray players and other AV products. In return, Pioneer took a 14.95% stake in Onkyo. The Ohtsuki f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frequency Synthesizer
A frequency synthesizer is an electronic circuit that generates a range of frequencies from a single reference frequency. Frequency synthesizers are used in many modern devices such as radio receivers, televisions, mobile telephones, radiotelephones, walkie-talkies, CB radios, cable television converter boxes, satellite receivers, and GPS systems. A frequency synthesizer may use the techniques of frequency multiplication, frequency division, direct digital synthesis, frequency mixing, and phase-locked loops to generate its frequencies. The stability and accuracy of the frequency synthesizer's output are related to the stability and accuracy of its reference frequency input. Consequently, synthesizers use stable and accurate reference frequencies, such as those provided by a crystal oscillator. Types Three types of synthesizer can be distinguished. The first and second type are routinely found as stand-alone architecture: direct analog synthesis (also called a mix-filter-divi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burmester Audiosysteme
Burmester Audiosysteme GmbH, commonly referred to as Burmester, is a German manufacturer of high-end audio components. The company is based in Berlin-Schöneberg and was founded in 1977 by an Austrian-born musician and engineer Dieter Burmester (1946–2015). History Burmester Audiosysteme got its beginning in 1977. As a musician since his early days, Dieter Burmester always wanted to make his audio components and loudspeakers reproduce music as naturally and purely as possible. It was the malfunction of a faulty preamplifier that caused the development of the first Burmester product. Because the products on the market couldn't satisfy Dieter Burmester's high demands, he built his own preamplifier, the Burmester 777 in July 1977 from parts of medical machines, which he produced in his own engineering office. The 777 is still the core element of Burmester's products and model of the type designation of the following components (composed of the year 77 and the month number 7). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuner (radio)
A tuner is a subsystem that receives radio frequency (RF) transmissions, such as FM broadcasting, and converts the selected carrier frequency and its associated bandwidth into a fixed frequency that is suitable for further processing, usually because a lower frequency is used on the output. Broadcast FM/ AM transmissions usually feed this intermediate frequency (IF) directly into a demodulator that converts the radio signal into audio-frequency signals that can be fed into an amplifier to drive a loudspeaker. More complex transmissions like PAL/NTSC (TV), DAB (digital radio), DVB-T/ DVB-S/ DVB-C (digital TV) etc. use a wider frequency bandwidth, often with several subcarriers. These are transmitted inside the receiver as an intermediate frequency (IF). Subcarriers are then processed like real radio transmissions, but the whole bandwidth is sampled with an analog-to-digital converter (A/D) at a rate faster than the Nyquist rate (that is, at least twice the IF frequency). A t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monophony
In music, monophony is the simplest of musical textures, consisting of a melody (or "tune"), typically sung by a single singer or played by a single instrument player (e.g., a flute player) without accompanying harmony or chords. Many folk songs and traditional songs are monophonic. A melody is also considered to be monophonic if a group of singers (e.g., a choir) sings the same melody together at the unison (exactly the same pitch) or with the same melody notes duplicated at the octave (such as when men and women sing together). If an entire melody is played by two or more instruments or sung by a choir with a fixed interval, such as a perfect fifth, it is also said to be monophony (or "monophonic"). The musical texture of a song or musical piece is determined by assessing whether varying components are used, such as an accompaniment part or polyphonic melody lines (two or more independent lines). In the Early Middle Ages, the earliest Christian songs, called plainchant (a we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
