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Sennheiser
Sennheiser electronic GmbH & Co. KG (, ) is a German audio equipment manufacturer headquartered in Wedemark. Sennheiser specializes in equipment for both the consumer and professional audio markets, including microphones, headphones, and loudspeakers. Founded in 1945 by Fritz Sennheiser, the company's professional media division has been under the leadership of third-generation co-CEOs Daniel Sennheiser and Andreas Sennheiser since 2013. The Sennheiser Group has over 2,800 employees worldwide, and reported total sales of €756.7 million in 2019. Sennheiser's consumer audio division was acquired by Sonova Holding AG in May 2021. History The company was founded in 1945 shortly after the end of World War II by Fritz Sennheiser and seven fellow University of Hannover engineers. Originally named Laboratorium Wennebostel (shortened as "Labor W"), named after the village of Wennebostel in the municipality of Wedemark, where it had been relocated during the war, the company's f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sennheiser Messestand 1950
Sennheiser electronic GmbH & Co. KG (, ) is a German audio equipment manufacturer headquartered in Wedemark. Sennheiser specializes in equipment for both the consumer and professional audio markets, including microphones, headphones, and loudspeakers. Founded in 1945 by Fritz Sennheiser, the company's professional media division has been under the leadership of third-generation co-CEOs Daniel Sennheiser and Andreas Sennheiser since 2013. The Sennheiser Group has over 2,800 employees worldwide, and reported total sales of €756.7 million in 2019. Sennheiser's consumer audio division was acquired by Sonova Holding AG in May 2021. History The company was founded in 1945 shortly after the end of World War II by Fritz Sennheiser and seven fellow University of Hannover engineers. Originally named Laboratorium Wennebostel (shortened as "Labor W"), named after the village of Wennebostel in the municipality of Wedemark, where it had been relocated during the war, the company's first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fritz Sennheiser
Fritz Sennheiser (9 May 1912 – 17 May 2010) was a German inventor and entrepreneur who founded and served as chairman of Sennheiser Electronic, a manufacturer of audio equipment. Biography Early life and education Born in Berlin on 9 May 1912, Sennheiser grew up with an interest in radios and electronics. Sennheiser built a crystal radio when he was 11 years old after seeing an early radio."Biography of Prof. Dr. Fritz Sennheiser" . Accessed 29 May 2010. He had originally hoped to become a landscape gardener, but chose instead to pursue electrical engineering at the [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sennheiser MD 421
The Sennheiser MD 421 is a German cardioid dynamic microphone, widely used for speech in broadcasting and for music in live concerts and the recording studio. Introduced in 1960, the internal large-diaphragm transducer element of the MD 421 is still produced unchanged by Sennheiser. The MD 421 is considered a classic and an industry standard. More than 500,000 units have been sold. Properties With a diaphragm diameter of , the MD 421 is classified as a large-diaphragm microphone. Its wide frequency response (30–17,000 Hz ± 3 dB) exceeded the former Hi-Fi standard and came close to the performance of condenser microphones. The compact design of the MD421 transducer system was novel at the time, because directional pickup patterns had only been achieved by adding sound entry ports to the rear of the element (for instance, the Electro-Voice "variable-D system" with a row of ports in the handle.) Microphones with sound-shaping ports could only be held ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonova
Sonova Holding AG (Phonak Holding AG before 1 August 2007) is an internationally active Swiss group of companies headquartered in Stäfa that specializes in hearing care ( hearing instruments, cochlear implants, wireless communication). The Sonova group operates through its core business brands Phonak, Unitron, Advanced Bionics, AudioNova and Sennheiser (Licensed). It is one of the largest providers in the sector worldwide. The group and its brands hold 24% of the global hearing aid market in sales. As of 11 September 2022, Sonova was a component of the Swiss Market Index. History The group traces its roots back to the Zürich-based AG für Elektroakustik, which was founded in 1947 with the participation of Ernst Rihs who acquired a majority shareholding in 1965, renaming the company Phonak AG in 1977. His two sons, Hans-Ueli and Andy Rihs, also went on to join the firm, along with Beda Diethelm; after Ernst Rihs' death, the two sons took over his shares while Beda Diethelm beca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sennheiser MD 441
The Sennheiser MD 441 is a large-diaphragm Microphone#Dynamic microphone, dynamic microphone introduced by Sennheiser in 1971. Following the introduction of the MD 21 in 1953 and the Sennheiser MD 421 in 1960, the MD 441 was widely-used for radio and television reporting and was often seen as part of political appearances around the world. Features The MD 441 has a supercardioid polar pattern, with a frequency response of 30 to 20,000 Hertz, sensitivity of 1.8 mV/Pa ±2 dB, and Electrical impedance, Impedance of 200 Ohms. It also features a hum compensation coil. Like the MD 421, the MD 441 has a five-stage bass switch. While it was originally introduced with a DIN connector, it has featured an XLR connector since 1985. Available in various versions and colors over the years, the current model is silver. Usage Broadcast and film The microphone was introduced at the Hannover Fair in 1971. From the 1970s onwards it could be seen in various television news programs, e.g. i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wireless Microphones
A wireless microphone, or cordless microphone, is a microphone without a physical cable connecting it directly to the sound recording or amplifying equipment with which it is associated. Also known as a radio microphone, it has a small, battery-powered radio transmitter in the microphone body, which transmits the audio signal from the microphone by radio waves to a nearby receiver unit, which recovers the audio. The other audio equipment is connected to the receiver unit by cable. In one type the transmitter is contained within the handheld microphone body. In another type the transmitter is contained within a separate unit called a "bodypack", usually clipped to the user's belt or concealed under their clothes. The bodypack is connected by wire to a "lavalier microphone" or "lav" (a small microphone clipped to the user's lapel), a headset or earset microphone, or another wired microphone. Most bodypack designs also support a wired instrument connection (e.g. to a guitar). Wir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Headphone
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 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 drivers in place. Another type, known as earbuds or earpieces, consists of individual units that plug into the user's ear canal; within that category have been developed cordless air buds using wireless technology. 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 a head ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Hannover
Leibniz University Hannover (), also known as the University of Hannover, is a public research university located in Hanover, Germany. Founded on 2 May 1831 as Higher Vocational School, the university has undergone six periods of renaming, its most recent in 2006. Leibniz University Hannover is a member of TU9, an association of the nine leading Institutes of Technology in Germany. It is also a member of the Conference of European Schools for Advanced Engineering Education and Research, a non-profit association of leading engineering universities in Europe. The university sponsors the German National Library of Science and Technology, the largest science and technology library in the world.Profile of the TIB at Leibniz University Hannoveonline (English) retrieved 26 May 2012 History The roots of the university begin in the Higher Vocational College/Polytechnic Institute (), founded on 2 May 1831. In 1879 the Higher Vocational School moved into the historic Guelph palace ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microphone
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 and other electronic devices, such as mobile phones, for recording sounds, speech recognition, Voice over IP, VoIP, and other purposes, such as Ultrasonic transducer, 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 (acoustics), diaphragm as a capacitor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shotgun Microphone
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 and other electronic devices, such as mobile phones, for recording sounds, speech recognition, VoIP, and 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Noise-canceling Microphone
A noise-canceling microphone is a microphone that is designed to filter ambient noise. Technical details The development is a special case of the differential microphone topology most commonly used to achieve directionality. All such microphones have at least two ports through which sound enters; a front port normally oriented toward the desired sound and another port that's more distant. The microphone's diaphragm is placed between the two ports; sound arriving from an ambient sound field reaches both ports more or less equally. Sound that's much closer to the front port than to the rear will make more of a pressure gradient between the front and back of the diaphragm, causing it to move more. The microphone's proximity effect is adjusted so that flat frequency response is achieved for sound sources very close to the front of the mic – typically 1 to 3 cm. Sounds arriving from other angles are subject to steep midrange and bass rolloff. Commercially and militarily u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
