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The first commonly available increase in tape length resulted from a reduction in backing thickness from 1.5 to 1.0 mil (38 to 25 μm) resulting in a total thickness reduction from 42 to 35 μm (1.7 to 1.4 mils), which allowed 3,600 ft (1,100 m), 1,800 ft (550 m), and 900 ft (270 m) tapes to fit on ten-and-a-half-, seven-, and five-inch reels respectively.
A reel-to-reel tape recorder (Sony TC-630), typical of a 1970s audiophile device. Reel-to-reel audio tape recording, also called open-reel recording, is magnetic tape audio recording in which the recording tape is spooled between reels. To prepare for use, the supply reel (or feed reel) containing the tape is placed on a spindle or hub.
The machine used steel tape that was 6 mm wide and 0.08 mm thick. It travelled at 5 feet per second and was able to record up to 20 minutes of audio. Although the tape was used by some organizations like the BBC , the quality was deemed not suitable for music recording so it was mainly used for dictation recording.
Recording onto a metal tape requires special high-flux magnetic heads and high-current amplifiers to drive them. [19] [79] Typical metal tape is characterized by remanence of 3000–3500 G and coercivity of 1100 Oe, thus its bias flux is set at 250% of Type I level.
In quoting tape speeds, I have used figures, and fraction characters where available. This is for readability. However, it would be greatly improved if someone can supply a character for 1/8 and 7/8. AHA! I think I've found a way! Andrewa 14:13, 6 August 2005 (UTC) In quoting tape widths, I have used inches for historical reasons.
The Digital Audio Stationary Head or DASH standard is a reel-to-reel, digital audio tape format introduced by Sony in early 1982 for high-quality multitrack studio recording and mastering, as an alternative to analog recording methods.
The Compact Cassette, also commonly called a cassette tape, [2] 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.
Different lengths of tape, and different positions for the tape on the drum head can cause different sounds. Use of multiple strips causes a heavier muffle. Taping a tissue or napkin to the rim of the drum, and letting it lay loose on the batter head. Again, different thicknesses and positions create different sounds.