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QuietComfort
Bose Corporation, Bose has sold aviation headset (audio), headsets since 1989 and consumer headphones since 2000. The current range of headphones/headsets consists of over-ear, in-ear, aviation and military models. Over-ear headphones Development of the company's noise-cancelling headphones, noise cancelling headphones (and first Headphones#Circumaural, over-ear headphones) began in 1978 when the chairman, Amar Bose, tried a set of airline-supplied headphones during a flight and found that engine noise from the aircraft prevented the music from being enjoyed. In 1986, Bose and Sennheiser both presented active noise cancelling headsets for aircraft pilots, with the Sennheiser design appearing in a paper and the Bose design appearing in an American Society of Mechanical Engineers, ASME paper. A prototype Bose product was used to prevent hearing loss in pilots during the first non-stop around-the-world flight in the Rutan Voyager. The company was the first to release active noise c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bose Corporation
Bose Corporation () is an American manufacturing company that predominantly sells audio equipment. The company was established by Amar Bose in 1964 and is based in Framingham, Massachusetts. It is best known for its home audio systems and speakers, noise cancelling headphones, professional audio products and automobile sound systems. Bose has a reputation for being particularly protective of its patents, trademarks, and brands. The majority owner of Bose Corporation is the Massachusetts Institute of Technology. Non-voting shares were donated to MIT by founder Amar Bose, and receive cash dividends. According to the company annual report for the 2021 financial year, Bose Corporation's annual sales were $3.2 billion, and the company employed approximately 7,000 people. History The company was founded in Massachusetts in 1964 by Amar Bose with angel investor funding, including Amar's thesis advisor and professor, Y. W. Lee. Bose's interest in speaker systems had begun in 1956 wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
True Wireless Headphones
Headphones are a pair of small loudspeaker drivers worn on or around the head over a user's ears. They are electroacoustic transducers, which convert an electrical signal to a corresponding sound. Headphones let a single user listen to an audio source privately, in contrast to a loudspeaker, which emits sound into the open air for anyone nearby to hear. Headphones are also known as earspeakers, earphones or, colloquially, cans. Circumaural ('around the ear') and supra-aural ('over the ear') headphones use a band over the top of the head to hold the speakers in place. Another type, known as earbuds or earpieces consist of individual units that plug into the user's ear canal. A third type are bone conduction headphones, which typically wrap around the back of the head and rest in front of the ear canal, leaving the ear canal open. In the context of telecommunication, a headset is a combination of headphone and microphone. Headphones connect to a signal source such as an audio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Noise
In signal processing, white noise is a random signal having equal intensity at different frequencies, giving it a constant power spectral density. The term is used, with this or similar meanings, in many scientific and technical disciplines, including physics, acoustical engineering, telecommunications, and statistical forecasting. White noise refers to a statistical model for signals and signal sources, rather than to any specific signal. White noise draws its name from white light, although light that appears white generally does not have a flat power spectral density over the visible band. In discrete time, white noise is a discrete signal whose samples are regarded as a sequence of serially uncorrelated random variables with zero mean and finite variance; a single realization of white noise is a random shock. Depending on the context, one may also require that the samples be independent and have identical probability distribution (in other words independent and iden ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ambient Music
Ambient music is a genre of music that emphasizes tone and atmosphere over traditional musical structure or rhythm. It may lack net composition, beat, or structured melody.The Ambient Century by Mark Prendergast, Bloomsbury, London, 2003. It uses textural layers of sound that can reward both passive and active listening and encourage a sense of calm or contemplation. The genre is said to evoke an "atmospheric", "visual",Prendergast, M. ''The Ambient Century''. 2001. Bloomsbury, USA or "unobtrusive" quality. Nature soundscapes may be included, and the sounds of acoustic instruments such as the piano, strings and flute may be emulated through a synthesizer. The genre originated in the 1960s and 1970s, when new musical instruments were being introduced to a wider market, such as the synthesizer. It was presaged by Erik Satie's furniture music and styles such as musique concrète, minimal music, and German electronic music, but was prominently named and popularized by British mu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soundscapes
A soundscape is the acoustic environment as perceived by humans, in context. The term was originally coined by Michael Southworth, and popularised by R. Murray Schafer. There is a varied history of the use of soundscape depending on discipline, ranging from urban design to wildlife ecology to computer science. An important distinction is to separate soundscape from the broader acoustic environment. The acoustic environment is the combination of all the acoustic resources, natural and artificial, within a given area as modified by the environment. The International Organization for Standardization (ISO) standardized these definitions in 2014.ISO 12913-1:2014 A soundscape is a sound or combination of sounds that forms or arises from an immersive environment. The study of soundscape is the subject of acoustic ecology or soundscape ecology. The idea of soundscape refers to both the natural acoustic environment, consisting of natural sounds, including animal vocalizations, the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
What Hi-Fi?
''What Hi-Fi?'' is a magazine published thirteen times a year by Future. It is a buying guide for consumer electronics, featuring news, reviews and features on hi-fi, home cinema, television and home audio. The brand also has a websitewhathifi.com These product categories include stereo speakers, TVs, amplifiers, headphones, soundbars, projectors, tablets and turntables. Brands features on the website and magazine cover include Bowers & Wilkins, KEF, Naim, LG and Sony. Reviews are written in-house at dedicated testing facilities, currently found in London, Reading and Bath. The magazine has nine international editions, and its publisher claims that its total readership is in excess of one million per issue. The ''What Hi-Fi?'' website has a consistently updated library of audio and video hardware reviews, plus news, features, advice and opinion from the editorial team. In the course of 2017, the website reached over 24 million unique users. ''What Hi-Fi?'' was sold to Future ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Firmware
In computing, firmware is a specific class of computer software that provides the low-level control for a device's specific hardware. Firmware, such as the BIOS of a personal computer, may contain basic functions of a device, and may provide hardware abstraction services to higher-level software such as operating systems. For less complex devices, firmware may act as the device's complete operating system, performing all control, monitoring and data manipulation functions. Typical examples of devices containing firmware are embedded systems (running embedded software), home and personal-use appliances, computers, and computer peripherals. Firmware is held in non-volatile memory devices such as ROM, EPROM, EEPROM, and flash memory. Updating firmware requires ROM integrated circuits to be physically replaced, or EPROM or flash memory to be reprogrammed through a special procedure. Some firmware memory devices are permanently installed and cannot be changed after manufacture. C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bose Music
{{disambiguation, geo, given name ...
Bose may refer to: * Bose (crater), a lunar crater * ''Bose'' (film), a 2004 Indian Tamil film starring Srikanth and Sneha * Bose (surname), a surname (and list of people with the name) * Bose, Italy, a ''frazioni'' in Magnano, Province of Biella ** Bose Monastic Community, a monastic community in the village * Bose, Poland * Bose Corporation, an audio company * Bose Ogulu, Nigerian manager of Burna Boy * Baise, or Bose, a prefecture-level city in Guangxi, China See also * * Boise (other) * Bos (other) * Bose–Einstein (other), relating to Satyendra Nath Bose * Basu Basu (variants: ''Bose, Boshu, Bosu, Bosh'') is an Indian surname, primarily found among Bengali Hindus. It stems from Sanskrit वासु vāsu (a name of Vishṇu meaning 'dwelling in all beings'). History Basus belong to the Kayastha ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Qi (standard)
Qi (pronounced ; from the Chinese word 气 qi; traditional Chinese: 氣) is an open interface standard that defines wireless power transfer using inductive charging over distances of up to 4 cm (1.6 inches). It is developed by the Wireless Power Consortium. The system uses a charging pad and a compatible device, which is placed on top of the pad, charging via resonant inductive coupling. As of February 2020, there are 488 manufacturers working with the standard including Apple, Asus, Google, Huawei, LG Electronics, Samsung, Xiaomi, and Sony. First released in 2008, the Qi standard was incorporated into more than 200 smartphones, tablets and other devices by 2017. Design left, Fig. 1-1 Devices that operate using the Qi standard rely on electromagnetic induction between planar coils. A Qi system consists of two types of devices – the Base Station, which is connected to a power source and provides inductive power, and Mobile Devices, which consume inductive power. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USB-C
USB-C (properly known as USB Type-C) is a 24-pin USB connector system with a rotationally symmetrical connector. The designation C refers only to the connector's physical configuration or form factor and should not be confused with the connector's specific capabilities, which are designated by its transfer specifications (such as USB 3.2). A notable feature of the USB-C connector is its ''reversibility''; a plug may be inserted into a receptacle in either orientation. The ''USB Type-C Specification 1.0'' was published by the USB Implementers Forum (USB-IF) and was finalized in August 2014. It was developed at roughly the same time as the USB 3.1 specification. In July 2016, it was adopted by the IEC as "IEC 62680-1-3". A device with a Type-C connector does not necessarily implement USB, USB Power Delivery, or any Alternate Mode: the Type-C connector is common to several technologies while mandating only a few of them. USB 3.2, released in September 2017, replace ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IPX4
The IP code or ingress protection code indicates how well a device is protected against water and dust. It defined by the International Electrotechnical Commission (IEC) under the international standard IEC 60529 which classifies and provides a guideline to the degree of protection provided by mechanical casings and electrical enclosures against intrusion, dust, accidental contact, and water. It is published in the European Union by the European Committee for Electrotechnical Standardization (CENELEC) as EN 60529. The standard aims to provide users more detailed information than vague marketing terms such as ''waterproof''. For example, a cellular phone rated at IP67 is "dust resistant" and can be "immersed in 1 meters of freshwater for up to 30 minutes". Similarly, an electrical socket rated IP22 is protected against insertion of fingers and will not become unsafe during a specified test in which it is exposed to vertically or nearly vertically dripping water. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bluetooth 5
Bluetooth is a short-range wireless technology standard that is used for exchanging data between fixed and mobile devices over short distances and building personal area networks (PANs). In the most widely used mode, transmission power is limited to 2.5 milliwatts, giving it a very short range of up to . It employs UHF radio waves in the ISM bands, from 2.402GHz to 2.48GHz. It is mainly used as an alternative to wire connections, to exchange files between nearby portable devices and connect cell phones and music players with wireless headphones. Bluetooth is managed by the Bluetooth Special Interest Group (SIG), which has more than 35,000 member companies in the areas of telecommunication, computing, networking, and consumer electronics. The IEEE standardized Bluetooth as IEEE 802.15.1, but no longer maintains the standard. The Bluetooth SIG oversees development of the specification, manages the qualification program, and protects the trademarks. A manufacturer must meet Blue ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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