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TOA Corp.
is a Japanese electronics company, specializing in public address systems, intercom systems, microphones, array speakers and megaphones. The company's products are used in a variety of settings, among them Brompton Oratory, a large neo-classical Roman Catholic church in Knightsbridge, London Knightsbridge is a residential and retail district in central London, south of Hyde Park, London, Hyde Park. It is identified in the London Plan as one of two international retail centres in London, alongside the West End of London, West End. .... Their speaker systems are also used in the Al Fateh Grand Mosque, located in the Kingdom of Bahrain. References External links TOA Corporation TOA Corporation TOA Corporation TOA partner at Vietnam Audio equipment manufacturers of Japan Companies based in Hyōgo Prefecture Loudspeaker manufacturers Microphone manufacturers Companies listed on the Tokyo Stock Exchange Electronics companies established in 1949 Japanese companies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Public Company
A public company is a company whose ownership is organized via shares of stock which are intended to be freely traded on a stock exchange or in over-the-counter markets. A public (publicly traded) company can be listed on a stock exchange (listed company), which facilitates the trade of shares, or not (unlisted public company). In some jurisdictions, public companies over a certain size must be listed on an exchange. In most cases, public companies are ''private'' enterprises in the ''private'' sector, and "public" emphasizes their reporting and trading on the public markets. Public companies are formed within the legal systems of particular states, and therefore have associations and formal designations which are distinct and separate in the polity in which they reside. In the United States, for example, a public company is usually a type of corporation (though a corporation need not be a public company), in the United Kingdom it is usually a public limited company (plc), i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Directional Sound
Directional Sound refers to the notion of using various devices to create fields of sound which spread less than most (small) traditional loudspeakers. Several techniques are available to accomplish this, and each has its benefits and drawbacks. Ultimately, choosing a directional sound device depends greatly on the environment in which it is deployed as well as the content that will be reproduced. Keeping these factors in mind will yield the best results through any evaluation of directional sound technologies. Systems which guide evacuees during an emergency by the emission of pink noise to the exits are often also called "directional sound" systems. Basic theory In all wave-producing sources, the directivity of any source, at maximum, corresponds to the size of the source compared to the wavelengths it is generating: The larger the source is compared to the wavelength of the sound waves, the more directional beam results . The specific transduction method has no impact o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronics Companies Established In 1949
The field of electronics is a branch of physics and electrical engineering that deals with the emission, behaviour and effects of electrons using electronic devices. Electronics uses active devices to control electron flow by amplification and rectification, which distinguishes it from classical electrical engineering, which only uses passive effects such as resistance, capacitance and inductance to control electric current flow. Electronics has hugely influenced the development of modern society. The central driving force behind the entire electronics industry is the semiconductor industry sector, which has annual sales of over $481 billion as of 2018. The largest industry sector is e-commerce, which generated over $29 trillion in 2017. History and development Electronics has hugely influenced the development of modern society. The identification of the electron in 1897, along with the subsequent invention of the vacuum tube which could amplify and rectify small electr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Companies Listed On The Tokyo Stock Exchange
A company, abbreviated as co., is a legal entity representing an association of people, whether natural, legal or a mixture of both, with a specific objective. Company members share a common purpose and unite to achieve specific, declared goals. Companies take various forms, such as: * voluntary associations, which may include nonprofit organizations * business entities, whose aim is generating profit * financial entities and banks * programs or educational institutions A company can be created as a legal person so that the company itself has limited liability as members perform or fail to discharge their duty according to the publicly declared incorporation, or published policy. When a company closes, it may need to be liquidated to avoid further legal obligations. Companies may associate and collectively register themselves as new companies; the resulting entities are often known as corporate groups. Meanings and definitions A company can be defined as an "artificial per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microphone Manufacturers
A microphone, colloquially called a mic or mike (), is a transducer that converts sound into an electrical signal. Microphones are used in many applications such as telephones, hearing aids, public address systems for concert halls and public events, motion picture production, live and recorded audio engineering, sound recording, two-way radios, megaphones, and radio and television broadcasting. They are also used in computers for recording voice, speech recognition, VoIP, and for other purposes such as ultrasonic sensors or knock sensors. Several types of microphone are used today, which employ different methods to convert the air pressure variations of a sound wave to an electrical signal. The most common are the dynamic microphone, which uses a coil of wire suspended in a magnetic field; the condenser microphone, which uses the vibrating diaphragm as a capacitor plate; and the contact microphone, which uses a crystal of piezoelectric material. Microphones typically need ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loudspeaker Manufacturers
This is a list of notable manufacturers of loudspeakers. In regard to notability, this is not intended to be an all-inclusive list; it is a list of manufacturers especially noted for their loudspeakers and which have articles on Wikipedia. To see more manufacturers, please refer to the category Loudspeaker manufacturers. See also * Lists of companies * List of studio monitor manufacturers * :Audio amplifier manufacturers References {{reflist Loudspeaker manufacturers This is a list of notable manufacturers of loudspeakers. In regard to notability, this is not intended to be an all-inclusive list; it is a list of manufacturers especially noted for their loudspeakers and which have articles on Wikipedia. To see ... ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Companies Based In Hyōgo Prefecture
A company, abbreviated as co., is a Legal personality, legal entity representing an association of people, whether Natural person, natural, Legal person, legal or a mixture of both, with a specific objective. Company members share a common purpose and unite to achieve specific, declared goals. Companies take various forms, such as: * voluntary associations, which may include nonprofit organizations * List of legal entity types by country, business entities, whose aim is generating profit * financial entities and banks * programs or Educational institution, educational institutions A company can be created as a legal person so that the company itself has limited liability as members perform or fail to discharge their duty according to the publicly declared Incorporation (business), incorporation, or published policy. When a company closes, it may need to be Liquidation, liquidated to avoid further legal obligations. Companies may associate and collectively register themselves ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Audio Equipment Manufacturers Of Japan
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] |
Metropolis International
Metropolis International Group Limited, established in 1994, is a predominantly UK-based media and technology group specialising in business, consumer, and travel media including awards, events, websites, business software, and reward and benefit programmes. It currently has 300 employees with offices in West London, Croydon, Bolton, Chester, Dublin, Acton and New York City. The company's headquarters are currently located in Acton, West London. Business publishing Metropolis publishes several business-focused titles including: *''Architects' Journal'' - a weekly architectural magazine, first published in London in 1896, purchased by Metropolis International from Ascential in June 2017. *''The Architectural Review'' is a monthly international architectural magazine published in London since 1896. Like AJ, it was acquired by Metropolis from Ascential in 2017. *''AV magazine'' - ''AV magazine'' was launched in 1972 for the professional audio-visual sector. The AV portfolio includ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knightsbridge
Knightsbridge is a residential and retail district in central London, south of Hyde Park, London, Hyde Park. It is identified in the London Plan as one of two international retail centres in London, alongside the West End of London, West End. Toponymy Knightsbridge is an ancient name, spelt in a variety of ways in Saxon and Old English, such as ''Cnihtebricge'' (c. 1050); ''Knichtebrig'' (1235); ''Cnichtebrugge'' (13th century); and ''Knyghtesbrugg'' (1364). The meaning is "bridge of the young men or retainers," from the Old English ''cniht'' (genitive case plural –a) and ''brycg''. ''Cniht'', in pre-Norman days, did not have the later meaning of a warrior on horseback, but simply meant a youth. The allusion may be to a place where ''cnihtas'' congregated: bridges and wells seem always to have been favourite gathering places of young people, and the original bridge was where one of the old roads to the west crossed the River Westbourne. However, there is possibly a more spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brompton Oratory
Brompton Oratory is a large neo-classical Roman Catholic church in the Knightsbridge area of the Royal Borough of Kensington and Chelsea, London. Its full name is the Church of the Immaculate Heart of Mary, or as named in its Grade II* architectural listing, The Oratory. The church is closely connected with the London Oratory School, a school founded by the priests from the London Oratory. Its priests celebrate Mass daily in both the Ordinary and Extraordinary forms, frequently conduct ceremonies for well-known people, as it works as an extra-parochial church. Two of its three choirs have released physical and digital audio albums. Location The church is on the A4 where it becomes Brompton Road, next to the Victoria and Albert Museum, where the street briefly becomes Thurloe Place and Cromwell Gardens but after that neighbouring museum the road becomes Cromwell Road which gradually widens via the Hammersmith Flyover into the M4. The A308 road starts opposite the building ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megaphone
A megaphone, speaking-trumpet, bullhorn, blowhorn, or loudhailer is usually a portable or hand-held, cone-shaped acoustic horn used to amplify a person's voice or other sounds and direct it in a given direction. The sound is introduced into the narrow end of the megaphone, by holding it up to the face and speaking into it, and the sound waves radiate out the wide end. A megaphone increases the volume of sound by increasing the acoustic impedance seen by the vocal cords, matching the impedance of the vocal cords to the air, so that more sound power is radiated. It also serves to direct the sound waves in the direction the horn is pointing. It somewhat distorts the sound of the voice because the frequency response of the megaphone is greater at higher sound frequencies. Since the 1960s the voice-powered ''acoustic megaphone'' described above has been replaced by the ''electric megaphone'', which uses a microphone, an electrically-powered amplifier and a folded horn loudsp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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