Magnetic tapes audio

In conventional tenter orientation, the sequence of steps is as described above (MD—TD). In some cases it is advantageous to reverse the draw order (TD—MD) or to use multiple draw steps, eg, MD—TD—MD. These other techniques are used to produce "tensilized" films, where the MD tensile properties are enhanced by further stretching. The films are generally unbalanced in properties and in extreme cases may be fibrillated to give fiber-like elements for special textile appHcations. Tensilized poly(ethylene terephthalate) is a common substrate for audio and video magnetic tape and thermal transfer tape. 

The exceUent adhesion to primed films of polyester combined with good dielectric properties and good surface properties makes the vinyhdene chloride copolymers very suitable as binders for iron oxide pigmented coatings for magnetic tapes (168—170). They perform very weU in audio, video, and computer tapes. 

The invention of the transistor in 1947 revolutionized the communication industry. The subsequent development of microelectronics and a cartridge tape system led to commercialization of audio cassettes for the mass market in the 1960s. Magnetic tapes were designed to have two sound tracks, one to play in the forward direction and the second one when the tape was reversed. Then stereo sound, using two speakers, came into vogue. Four separate sound tracks were needed now, two tracks in each direction. 

Digital audio tape (DAT)— A high fidelity technology developed in the 1990s, where information is stored on magnetic tape in binary code. 

There are several pieces of backup hardware that are currently available. You can back up your information to magnetic tape, Digital Audio Tape (DAT), Digital Linear Tape (DLT), optical disk, removable hard disk, and many other removable media. The key here is that all of these media can be removed from the drive and stored in a safe place. 

The amplified neural activity was monitored with a storage oscilloscope and an audio analyzer, and stored on magnetic tape. Multiunit activity was summed using a short-time averaging circuit with a time constant of 0.5-1.0 sec (Kiyohara and Tucker, 1978), and displayed on a pen recorder. 

Polyesters enter our lives in a most ubiquitous manner as textiles, carpets, tire cords, medical accessories, seat belts, automotive and electronic items, photographic film, magnetic tape for audio and video recording, packaging materials, bottles, and so on. Their utility is illustrated by the vast range of their applications. This article describes the properties, synthesis, manufacture, and raw materials for the two most widely used thermoplastic polyesters polyCethylene terephtha-late) (PET) [25038-59-9] and poly(butylene terephthalate) (PBT) [26062-94-2]. In order of volume, PET comes first by virtue of its enormous market tonnage in polyester fibers and films, as well as the resin for blow-molded bottles, containers, and food packaging. 

Polyester film consumes 7% of production. When coated with a chemical emulsion, it is used as x-ray and microfilm when coated with a magnetic emulsion, it is used for audio and video tapes and when coated with an adhesive, it is used for wrapping and sealing tapes (see Films and sheeting). 

Ferrimagnetic phases are widely used for the storage of digital or analogue data on computer disks or audio tapes. Because known and mineralogically well-defined systems exist, magnetometric methods allow precise and specific characterization of these phases in order to control and improve their magnetic performance for technical applications. 

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