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What the Heck is Bias? | Adjusting Bias in Audio Equipment ...
https://korneffaudio.com/what-the-heck-is-bias/
Bias for some amplifiers or components is basically a gun to the head. As an example, to get an analog tape deck to record, a super high pitched and very powerful bias signal is mixed in with the much weaker audio signal and actually printed to tape. This bias signal is so strong that it forces the magnetic particles on the tape to actually record.
How to Bias Analog Tape Recorders - Blackmer Design
https://blackmerdesign.com/resources/how-to-bias-analog-tape-recorders/
Here is an interesting effect relating to tape types vs optimum bias current vs audio signal level. Many tapes, like the old Scotch 250, as you raise and lower the level of the audio signal, have their optimum bias points stacked straight up and down. Other tapes, such as Ampex, now Quantegy, 456, have different optimum bias currents for different levels.
Tape Bias - What Is It? - YouTube
https://www.youtube.com/watch?v=XI-uymop7Uc
This video talks about the technology that allowed us to use tape to record audio. Without "bias", we would have had much trouble getting tape recordings to...
Tape recorder bias frequencies – Richard L Hess—Audio Tape ...
https://richardhess.com/notes/2008/02/02/tape-recorder-bias-frequencies/
Bias frequences started low, apparently with 60 kHz for early consumer recorders, but Ampex started with 100 kHz. Other later machines used different bias and erase frequencies. We can see with a few exceptions, the top bias frequencies were commonly limited to 250 kHz for audio, with the Sony APR series and the Ampex ATR series in the 400 kHz region.
Bias Controls On Tape Decks - And What Do They Do ...
https://www.sweetwater.com/sweetcare/articles/bias-controls-tape-decks-what/
Bias (see WFTD archive bias) is only applied during recording, so a true bias switch will not affect the way a tape plays back at all. Different tape formulations (Cr02, FeCR, Metal, Normal, etc.) each require different amounts of bias to be applied during recording to make a well-balanced recording. Applying the incorrect amount of bias will cause non-linear high frequency …
Biasing in Magnetic Tape Recording
http://hyperphysics.phy-astr.gsu.edu/hbase/Audio/bias.html
Biasing in Tape Recording. A music signal alone cannot be used to produce a faithful tape recording of a sound because the magnetization of the tape is so sensitive to its previous magnetic history, even the effects of the signal recorded just ahead of it. A high frequency bias signalis typically applied to the tape through the tape head along with the music signal to …
TECHNICAL BULLETIN #3 BIAS - A.N.T. Audio
http://www.ant-audio.co.uk/Tape_Recording/Library/Bias.pdf
audio signal reaches the zero point, the high frequency bias signal is still driving the head and the tape. The bias signal is a pure sine wave; but since it has many more cycles per second, there is always a strong element of bias present to magnetically influence the tape particles when the audio waveform is at a very weak point or even zero.
Analog Tape 101, part 3: Bias Magic - Mixonline
https://www.mixonline.com/recording/analog-tape-101-part-3-bias-magic-373029
Bias is like an electronic bribe to the tape’s magneticparticles–without it, analog tape would sound like a digitalchildren’s toy. It is basically a minimum distortionadjustment–sort of like tuning an old-fashioned AM radio–toolittle bias makes the sound bright on top and fuzzy on the bottom.Excessive bias results in dull and dirty recordings.
Normal Bias TYPE-I Cassette Tapes *MUSIC GRADE* : Tapes ...
http://www.tapes.com/audio-cassette-tapes-normal-bias-typei-cassette-tapes-music-grade-c-195_7.html
tapes.com - dvd, cd blank discs, blank cassettes, media, blu ray and more : normal bias type-i cassette tapes *music grade* - pro audio - dat/ dtrs/ adat & mini discs pro video - hi-8mm / vhs & accessories cdr media dvd & dvd dual layer media duplicators -cd/ dvd/ bdr/ usb packaging - cd / dvd / bdr / usb ink cartridges & ribbons blu-ray (bdr) media audio cassette tapes studio …
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