Technique that improves the fidelity of analogue tape recorders
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Visualization of the magnetic field on a stereo cassette containing a 1 kHz audio tone. Individual high-frequency magnetic domains are visible.
Tape bias is the term for two techniques, AC bias and DC bias, that improve the fidelity of analogue tape recorders. DC bias is the addition of direct current to the audio signal that is being recorded. AC bias is the addition of an inaudible high-frequency signal (generally from 40 to 150 kHz) to the audio signal. Most contemporary tape recorders use AC bias.
When recording, magnetic tape has a nonlinear response as determined by its coercivity. Without bias, this response results in poor performance, especially at low signal levels. A recording signal that generates a magnetic field strength less than the tape's coercivity cannot magnetise the tape and produces little playback signal. Bias increases the signal quality of most audio recordings significantly by pushing the signal into more linear zones of the tape's magnetic transfer function.
Tapebias is the term for two techniques, AC bias and DC bias, that improve the fidelity of analogue tape recorders. DC bias is the addition of direct...
Biastape or bias binding is a narrow strip of fabric, typically plain weave, cut on the bias. As the weave of fabric is at a 45 degree angle, the resulting...
a grid bias voltage is often applied to the grid electrodes for the same reason.[citation needed] In magnetic tape recording, the term bias is also used...
compact cassettes use magnetic tape of three major types which differ in fundamental magnetic properties, the level of bias applied during recording, and...
corruptions may become audible. A DC tapebias was used in early tape recorders to reduce distortion. A DC bias is applied to the control grid of vacuum...
An audio tape recorder, also known as a tape deck, tape player or tape machine or simply a tape recorder, is a sound recording and reproduction device...
Cassette, also commonly called a cassette tape, audio cassette, or simply tape or cassette, is an analog magnetic tape recording format for audio recording...
practical tape recorder, the K1, first demonstrated in Germany in 1935 at the Berlin Radio Show. Later models introduced the concept of AC tapebias, which...
fabric has two biases, perpendicular to each other. Non-woven fabrics such as felt or interfacing do not have a bias. biastapeBiastape or bias binding is...
early metal tape capable decks such as the 580M. The tape settings on these decks were EX (normal bias), SX (high bias), and ZX (metal bias). Around 1980...
recording. The narrower the head gap, the more bias signal must be used to maintain linearity of the signal on tape which in turn will reduce the high frequency...
response by adjusting the inaudible tapebias during the recording of strong high-frequency sounds, which had a bias effect of their own. Developed by Bang...
his stage name: "The name 'Bias' didn't come from prejudicial attitudes, it came from the frequency on a cassette tape. Bias is the inaudible, high-frequency...
In magnetic tape recording, adaptive biasing is the technique of continuously varying the bias current to a recording head in accordance with the level...
The Fuhrman tapes are 13 hours of taped interviews given by Mark Fuhrman, former detective of the Los Angeles Police Department, to writer Laura McKinny...
so degaussing typically induces a very small "known" field referred to as bias. Degaussing was originally applied to reduce ships' magnetic signatures during...
made allegations of sexual misconduct against Trump. The release of the tape was regarded as an "October surprise", influencing public opinion in the...
BIAS (originally known as Berkley Integrated Audio Software) was a privately held corporation based in Petaluma, California. It ceased all business operations...
Walter Weber (engineer) (1907–1944), German audio engineer involved with tapebias research This disambiguation page lists articles about people with the...
weighing scales, clocks, telescopes, microscopes, thermometers, cameras, and tape recorders, and also translate into perceptible form events that are unobservable...
market. (Battery life also was a problem, because the high bias currents required by Type IV tape, combined with the state of battery technology at the time...
at least until the 1920s. Nainsook cotton was also often used to make biastape in the 1950s and 1960s. Lawn cloth "Nainsook". Merriam Webster. Merriam...
A mixtape (alternatively mix-tape, mix tape or mixed tape) is a compilation of music, typically from multiple sources, recorded onto a medium. With origins...
Camras died of kidney failure at the age of 79 in Evanston, Illinois. Tapebias "US Patent number 2351004, "Method and Means of Magnetic Recording""....
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