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Remanence of audio tapes, referred to quarter-inch tape width, varies from around 1100 G for basic ferric tapes to 3500 G for Type IV tapes; [5] advertised remanence of the 1986 JVC Type IV cassette reached 4800 G. [6] Coercivity is a measure of the external magnetic flux required to magnetize the tape, and an indicator of the necessary bias level.
The phrase cassette tape is ambiguous in that there is no common dictionary definition [1] [2] [3] so depending upon usage it has many different meanings, as for example any one the one of 106 different types of audio cassettes, [4] video cassettes [5] or data cassettes [6] listed at The Museum of Obsolete Media.
Higher speed machines using compact cassettes commonly use 3 3 ⁄ 4 ips. Although the microcassette is specified to have a standard record speed of 2.4 cm/s and low speed of 1.2 cm/s , in the dictaphone application for which it was designed these speeds are in practice identical to 15 ⁄ 16 ips and 15 ⁄ 32 ips.
The affordability and digital format of the DA-88 led to sales of more than 60,000 units by 1999. At that time, it was the biggest product in the history of TASCAM. [6] Because of its reliability and durability, the DA-88 and its subsequent fellow units continue to be used by aficionados.
Analog, 1 ⁄ 4-inch-wide (6.4 mm) tape, 3 + 3 ⁄ 4 in/s, endless-loop cartridge 1962 Compact cassette: Variants of the Compact Cassette Analog, with bias. 0.15 inches (3.81 mm) tape, 1 + 7 ⁄ 8 ips. 1970: introduced Dolby noise reduction: 1964 Sanyo Micro Pack 35 Channel Master 6546 Westinghouse H29R1
The cassette was the next step following reel-to-reel audio tape recording, although, because of the limitations of the cassette's size and speed, it initially compared poorly in quality. Unlike the 4-track stereo open-reel format, the two stereo tracks of each side lie adjacent to each other, rather than being interleaved with the tracks of ...
DCC tape is the same 0.15 inches (3.8 mm) width as in analog compact cassettes, and operates at the same speed: 1 + 7 ⁄ 8 inches (4.8 cm) per second. The tape that was used in production cassettes was chromium dioxide- or cobalt-doped ferric oxide , 3–4 μm thick in a total tape thickness of 12 μm, [ 9 ] identical to the tape that was ...
This speed was of too low quality for music on these machines, but was acceptable for voice recording. With two interleaved stereo pairs, the track format and speed of the RCA tape cartridge is the same as that of consumer reel-to-reel stereo tape recorders, which run at 3.75 IPS.