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Picocassette
Picocassette is an audio storage medium introduced by Dictaphone in collaboration with JVC in 1985. The Picocassette was introduced to compete with the Microcassette, introduced by Olympus, and the Mini-Cassette, by Philips. Size It is approximately half the size of the previous Microcassette, and was intended for highly portable dictation devices. With a tape speed of 9 mm/s, each cassette could hold up to 60 minutes of dictation, May 27, 1985, '' Time.com'', Retrieved 2010-04-06 30 minutes per side. The |
Picocassette And Compact Cassette
Picocassette is an audio storage medium introduced by Dictaphone in collaboration with JVC in 1985. The Picocassette was introduced to compete with the Microcassette, introduced by Olympus Corporation, Olympus, and the Mini-Cassette, by Philips. Size It is approximately half the size of the previous Microcassette, and was intended for highly portable Dictation machine, dictation devices. With a tape speed of 9 mm/s, each cassette could hold up to 60 minutes of dictation, May 27, 1985, ''Time.com'', Retrieved 2010-04-06 30 minutes per side. The signal-to-noise ratio was 35 Decibel, dB. The widest dimension of the picocassette was near . See also * Microcassette * Mini-Cassette * Steno ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Techmoan
Matthew "Mat" Taylor, better known by his YouTube handle Techmoan, is a British YouTuber and blogger, specializing in consumer tech reviews and retrotech documentaries about technology of historical interest. Apart from reviews and tests, Taylor's videos often include disassembling (and repairing when possible) products and, in the case of older technology, reporting on the product's history and reception via references in publications of the time. For audio and entertainment devices this is often ''Billboard'' magazine, which at the time covered both consumer and trade electronics devices through articles and old advertisements. Bonus outro skits often feature a trio of muppet-like puppets, parodying YouTube viewer comments. Taylor's videos have been referenced by sites such as ''The A.V. Club'', ''Gizmodo'', ''Hackaday'', ''El Español'' and print publications such as ''Popular Mechanics'' and ''The Daily Telegraph''. By ratings on Reddit, ''MarketWatch'' listed the YouT ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compact Cassette
The Compact Cassette, also commonly called a cassette tape, audio cassette, or simply tape or cassette, is an analog magnetic tape recording format for audio recording and playback. Invented by Lou Ottens and his team at the Dutch company Philips, the Compact Cassette was released in August 1963. Compact Cassettes come in two forms, either containing content as a prerecorded cassette (''Musicassette''), or as a fully recordable "blank" cassette. Both forms have two sides and are reversible by the user. Although other tape cassette formats have also existed—for example the Microcassette—the generic term ''cassette tape'' is normally used to refer to the Compact Cassette because of its ubiquity. From 1983 to 1991 the cassette tape was the most popular audio format for new music sales in the United States. Compact Cassettes contain two miniature spools, between which the magnetically coated, polyester-type plastic film (magnetic tape) is passed and wound—essentia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microcassette
The Microcassette (often written generically as microcassette) is an audio storage medium, introduced by Olympus in 1969. It has the same width of magnetic tape as the Compact Cassette but in a cassette roughly one quarter the size. By using thinner tape and half or a quarter the tape speed, microcassettes can offer comparable recording time to the compact cassette but in a smaller package. History Microcassettes have mostly been used for recording voice. In particular, they are commonly used in dictation machines and answering machines. Microcassettes have also been used in computer data storage and to record music. For the latter purpose, devices for recording in stereo were produced in 1982 and, for higher fidelity, microcassettes using Type IV ("metal", i.e. coated with pure metal particles rather than oxide) tape were sold. This was an attempt by Olympus to cash in on the burgeoning Walkman market; one model, the Olympus SR-11, had a built-in radio and offered a ste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NT (cassette)
NT (sometimes marketed under the name Scoopman) is a digital memo recording system introduced by Sony in 1992. The NT system was introduced to compete with the Microcassette, introduced by Olympus, and the Mini-Cassette, by Philips. Design left, NT cassette compared to various memory cards The design was a rotating head based system which stored memos using helical scan on special microcassettes, which were with a tape width of 2.5 mm, with a recording capacity of up to 120 minutes similar to Digital Audio Tape. The cassettes are offered in three versions: The Sony NTC-60, -90, and -120, each describing the length of time (in minutes) the cassette can record. NT stands for ''Non-Tracking'', meaning the head does not precisely follow the tracks on the tape. Instead, the head moves over the tape at approximately the correct angle and speed, but performs more than one pass over each track. The data in each track is stored on the tape in blocks with addressing informat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steno-Cassette
The Steno-Cassette is an analog cassette format for dictation, introduced by Grundig in 1971. It gained widespread use in Germany, where it was established as a DIN standard ( DIN 32750) in 1985. It is easily distinguished from other dictation cassette formats (such as the Microcassette) by the integrated tape counter index, showing the amount of tape available. See also * Microcassette * Mini-Cassette * Picocassette Picocassette is an audio storage medium introduced by Dictaphone in collaboration with JVC in 1985. The Picocassette was introduced to compete with the Microcassette, introduced by Olympus, and the Mini-Cassette, by Philips. Size It is app ... * NT (cassette) References External linksGrundig Global Business Systems Audio storage Audiovisual introductions in 1971 Tape recording {{electronics-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetic Cassette Tape
Cassette, also known as cassette tape, refers to a small plastic unit containing a length of magnetic tape on two reels. The design was created to replicate the way a reel-to-reel machine works with tape moving from one reel to another while being read by a tape head. The design was first made for audio formats but then expanded into video and data storage. , although the cassette format is no longer used for video or data storage, it is still used as an audio format with many consumers still purchasing new album releases on cassette. Terminology The term cassette mainly refers to a unit that has two reels inside. While some of the first cassette formats also used the term "cartridge", in modern usage the term "cartridge" and "tape cartridge" usually refers to a plastic unit that only has one reel of tape and companies that make and sell both type of formats like Fujifilm or Maxell also make the same distinction. History Magnetic tape became a popular method to record and play ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Signal-to-noise Ratio
Signal-to-noise ratio (SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise. SNR is defined as the ratio of signal power to noise power, often expressed in decibels. A ratio higher than 1:1 (greater than 0 dB) indicates more signal than noise. SNR is an important parameter that affects the performance and quality of systems that process or transmit signals, such as communication systems, audio systems, radar systems, imaging systems, and data acquisition systems. A high SNR means that the signal is clear and easy to detect or interpret, while a low SNR means that the signal is corrupted or obscured by noise and may be difficult to distinguish or recover. SNR can be improved by various methods, such as increasing the signal strength, reducing the noise level, filtering out unwanted noise, or using error correction techniques. SNR also determines the maximum possible amount of data that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Audiovisual Introductions In 1985
Audiovisual (AV) is electronic media possessing both a sound and a visual component, such as slide-tape presentations, films, television programs, corporate conferencing, church services, and live theater productions. Audiovisual service providers frequently offer web streaming, video conferencing, and live broadcast services. The professional audio visual industry has companies that provide hardware, software and services. These organizations are commonly referred to as ''systems integrators'' and perform both the installation and integration of different types of AV equipment from multiple manufacturers into spaces to create the AV experience for the user or audience. Computer-based audiovisual equipment is often used in education, with many schools and universities installing projection equipment and using interactive whiteboard technology. Components Aside from equipment installation, two significant elements of audiovisual are wiring and system control. If either of thes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Audio Storage
Sound recording and reproduction is the electrical, Mechanical system, mechanical, electronic, or digital inscription and re-creation of sound waves, such as spoken voice, singing, instrumental music, or sound effects. The two main classes of sound recording technology are analog recording and digital recording. Acoustic analog recording is achieved by a microphone diaphragm that senses changes in atmospheric pressure caused by acoustics, acoustic sound waves and records them as a mechanical representation of the sound waves on a medium such as a phonograph record (in which a stylus cuts grooves on a record). In magnetic tape recording, the sound waves vibrate the microphone diaphragm and are converted into a varying electric current, which is then converted to a varying magnetic field by an electromagnet, which makes a representation of the sound as magnetized areas on a plastic tape with a magnetic coating on it. Analog sound reproduction is the reverse process, with a large ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Decibel
The decibel (symbol: dB) is a relative unit of measurement equal to one tenth of a bel (B). It expresses the ratio of two values of a Power, root-power, and field quantities, power or root-power quantity on a logarithmic scale. Two signals whose level (logarithmic quantity), levels differ by one decibel have a power ratio of 101/10 (approximately ) or root-power ratio of 101/20 (approximately ). The strict original usage above only expresses a relative change. However, the word decibel has since also been used for expressing an Absolute scale, absolute value that is relative to some fixed reference value, in which case the dB symbol is often suffixed with letter codes that indicate the reference value. For example, for the reference value of 1 volt, a common suffix is "#Voltage, V" (e.g., "20 dBV"). As it originated from a need to express power ratios, two principal types of scaling of the decibel are used to provide consistency depending on whether the scaling refer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dictation Machine
A dictation machine is a sound recording device most commonly used to record Speech communication, speech for playback or to be typed into print. It includes digital voice recorders and tape recorder. The name "Dictaphone" is a trademark of the American Graphophone Company, but it has also become a common term for all dictation machines, as a genericized trademark. History Alexander Graham Bell and his two associates took Edison's tinfoil phonograph and modified it considerably to make it reproduce sound from wax instead of tinfoil. They began their work at Bell's Volta Laboratory in Washington, D.C.In 1879, and continued until they were granted basic patents in 1886 for recording in wax.Newville, Leslie JDevelopment of the Phonograph at Alexander Graham Bell's Volta Laboratory United States National Museum Bulletin, Smithsonian Institution, United States National Museum and the Museum of History and Technology, Washington, D.C., 1959, No. 218, Paper 5, pp.69-79. Retrieved fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
