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New improved vinyl LP

In the 1950s was ultra-microgoove vinyl records made for car vinyl record players, those had groove size of only about 1/4th of normal microgroove vinyl LP. Why cannot such ultra-microgroove LPs be made today? Those ín 1950s had problems with heavy tonearms but modern tonearms are light, and can be made from carbon fibre "etc. so they are even lighter. But dust may be problem with those very fine groove LPs. Dust protection can be done if for example with LPs antistatic LP inner sleeves like ricepaper sleeves are used, antistatic plastic formula used in LP, antistatic gloves sold with LP player and even air moisturizer is sold together with LP player, because dry air is the usual cause for static in vinyl LPs.
In LP player cartridge can be two needles / cartridges together, another for ordinary LP groove and another for ultra-microgroove. One of the two needles is chosen and that part of cartridge is pressed slightly downwards so that another needle remain slightly upwards so that it does not touch vinyl surface. The cartridge is build so that the two needles can be manually pushed slightly up or down by pressing the the top of cartridge which is divided to two parts, then position of two needles are locked, , before LP is played, so that only one needle touches the vinyl.
There can also be dust clearing in phono cartridge, first in cartridge is miniaturized “Milty zerostat” type antistatic electric clearing, then is miniaturized very small nozzle that blows air to vinyl those few grooves that needle is following, this nozzle airstream blows dust away from the very groove that needle is playing, and antistatic electric treatment makes dust to fly away easily from vinyl grooves , and last is small miniature brush that clears the same groove that needle is playing, this miniature antistatic brush has “W shape upside down”, so that this brush anchors itself to three grooves, of which the middle groove is that which needle is following. These three clearing methods, zerostat, miniature nozzle air blowing, and miniature brush, are just before needle (or needles, there are two needles in phono cartridge), so that when needle play LP grooves, grooves are clean of dust and static.
This same can be used in optical cartridge that uses lasers to read vinyl LP grooves.
In phono cartridge is those three groove clearing methods, and also two needles, so cartridge in the end of tonearm is combination of two needle cartridges (ultra-microgroove and normal) and three groove clearing systems.
There can also be optional second tonearm which is capacitance disc tonearm, CED and VHD video discs used those (Video High Density), but this VHD disc and its tonearm is not for video, it is for high quality analog audio. Similar groove clearing methods that are used in ultra-microgroove vinyl LP can be used in this second tonearm, and VHD discs did no have grooves (but there was still contact with tonearm, so there was contact with VHD disc surface). VHD disc if used for analog audio is super- high quality analog audio.
Also disc sizes that are larger than 12 inch / 30 cm can be used, but are still small enough that fit inside usual dust covers of usual record players. the idea of ultra-microgroove is either longer playing time or faster playing speed so that vinyl LP can have about CD quality in analog sound.

The advantage of using ultra-microgroove that is about 1/3 of normal LP grooves width and density about 4 grooves versus each one of the grooves in vinyl LP record is that LP can now have faster playing speed, improving sound quality. Ultra-microgroove vinyl records and their record players were made already in 1950s. Four times of 33 1/3 rpm is then 133 1/3 rpm playing speed. Quality of sound should be very good.
Records can also be smaller, vinyl single of 180 mm size and 78 rpm playing speed, can now have about 17,1 - 20,5 minutes playing time per side, if compared to normal 33 1/3 rpm LP that has 25 - 30 minutes playing time per side. If groove space efficiency is four times of normal LP. So it is possible to make 78 rpm Long Player record that is the size of vinyl single. This 78 rpm LP that is 180 mm size can be send by post as postal letter etc.
No new record players are needed, just new phono cartridge. In this new phono cartridge is two cartridges combined, with ultra-microgroove and normal stylus. Pressing top of cartridge one of the cartridges goes few mm lower than other, and other stylys/cartridge just few mm over vinyl record surface. The other is the stylus that touches vinyl record grooves. Changing of stylus cartridge happens by lifting another few mm and lowering the another by few mm. The double cartridge is divided to two parts that can be lifted or lowered.
In that same phono cartridge can be, in front of those two cartridges/needles, small nozzle that blows air to vinyl grooves, just miniature nozzle that blows few mm over diameter of very few grooves only, in 45 degree direction forward, not straight downward, so that dust it blows does not go backwards. After that can be miniature brush that does final vinyl groove cleaning. Brush is miniature size, just few LP grooves wide, sot that it cleans just very few grooves, including the one that stylus (needle) follows.
There can also be miniature Milty Zerostat type device in cartridge front, that makes dust antistatic and then it dust is easily blown away by air from air nozzle, miniature size so only few grooves wide have this antistatic treatment, but if there is electromagnetic interference between zerostat device and cartridge the zerostat must be isolated (like Faraday gage?) or it is put to additional tonearm that is in the other side of vinyl record, far from cartridge. Or not antistatic electronic device used at all, only air blower and miniature brush in the “double cartridge”.
Power of air blower can be from piezoelectric motor. Motor and power source are sold together with phono cartridge.
These kind of cleaning methods can be used with optical (laser) phono cartridges too.
Cleaning stuff, like record cleaning liquids, antistatic gloves, extra antistatic LP record sleeves etc. can be sold with this phono cartridge, and cheap air moisturizer too.

It is possible to use “double cartridge” in vinyl record players, phono cartridge that has both ultra-microgroove stylus with about 1/3 groove width and 1/4 of groove density of normal LP groove. Stylus is chosen by pressing top of double cartridge that is divided to two parts, then one of the two stylus/cartridges is put to few mm lower than other, and it has contact to LP grooves when the other has not. Change is done lifting few mm other cartridge and lowering another. Both cartridges, ultra-microgroove and normal, are in double phono cartridge, which looks like ordinary phono cartridge but it has two styluses/needles, and cartridge has two parts that can be lifted or lowered few mm. Ultra-microgroove players and vinyl records were made already in the 1950s. Modern tonearms are light, and even lighter they are if made from carbon fiber etc.
No new LP player is needed, only cartridge, or tonearm/cartridge combination can be changed, rest of the LP player is the same. So only cartridge or tonearm plus cartridge is sold for ultra-microgroove playing. But normal LP players have only 45 rpm or 78 rpm max playing speed, so new LP player is needed for example 133 1/3 playing speed, four times of normal LP speed (ultra-microgroove has four times density of LP grooves).
Dust may be a problem in small grooves, so in that double phono cartridge can be small miniature nozzle, very narrow and only few grooves wide, that blows air before needle, blowing 45 degrees forward so it clears grooves before needle and blows away from needle. After that is miniature brush, only few grooves wide in the cartridge that does final cleaning of groove before needle. Miniature air blower needs power so if power source outside record player is needed, tonearm or cartridge has small electric wire that goes to piezoelectric motor that powers air blower, and there to power source electric plug. So LP player needs two electric plugs, one for LP player and another for tonearm/cartridge if tonearm/cartridge and LP player are sold separately. Instead of piezoelectric motor can be some other electric motor that powers miniature air blower. Air bearing can also be used in the tonearm, tonearm flows in air cushion.
Also miniature Milty zerostat type device can be in phono cartridge, in front of all, it makes dust loose so that air blows it easily away and brush also. But if there is electromagnetic interference with cartridge and electromagnetic isolation won t help, miniature zerostat is in additional tonearm on the other side of vinyl LP, miniature zerostat that few mm over LP surface makes only few LP grooves wide area antistatic before needle, is not used at all.
Also together with this ultra-microgroove tonearm/cartridge or LP player can be sold air humidizer/moisturizer, few dozen antistatic LP inner sleeves, cheap gloves made of antistatic material and bottle of cheap vinyl record cleaning liquid. Those cleaning liquids not only clean LPs but also make them antistatic for a while. Cheap air moisturizers cost only about 30 dollars, and it is the best way remove static in LPs because static comes from dry air. So combining it with cartridge / tonearm / record player package does not rise cost too much. Also Milty Zerostat can be included in the package if miniature zerostat is not used. Cheap plastic flexible transparent record player dust cover canvas that covers “universal” 360 mm depth dust cover can also be with package, because some dust covers leave under front part of dust cover open to dust come in, although that dust cover canvas only covers those record players that use “universal” size dust covers. Also cork mat for LP can be included, cork mat under LP in LP turntable of record player is efficient way to prevent static. Most record player owners have already antistatic big LP brush so it is not needed in package, but all other antistatic methods can be included, they are not expensive. Also antistatic plastic formulas can be used for making LP records, but that depends on manufacturer of LPs. And antistatic PVC formulas have heavy metals? So they are not environmental friendly?
The additional tonearm in record player, if record player is made that way that it has place for aditional tonearm, can be made to be tonearm of capacitance VHD disc (Video High Density), but this VHD disc is not for video, is specially build disc system for super high quality analog audio. Electronics can be included in the record player if needed, as firmware upgrade to record player if VHD tonearm is bought. VHD has megahertz range, audio needs only few kilohertz so quality is super good analog sound. VHD disc have no grooves but still needs contact with pickup, and similar dust blower and brush can be used in pickup like in ultra-microgroove tonearm. Also perhaps analog video can be in VHD disc, record player is then video player also, because analog purists want everything analog and analog video is not video compressed as much as digital video, so less compression artifacts in the picture, although compression like MUSE exists for analog video too. This video ability can be in firmware upgrade too and used only when bought as extra to record player. But simply making digital home video systems better (less perceptually noticeable video compression) makes analog video systems unnecessary (Laserdisc is still favored among analog purists because it has no video compression).
But better would be simply analog optical disc, analog CD, using Laserdisc PWM system or other analog optical system. CD player mechanical parts can be almost same, only electronics is changed to analog. Four layer DVD or Bluray disc has enough disc space for analog sound. Error correction is not needed if some form of analog error correction is used or disc is inside protective cartridge like very first Bluray discs. Also miniature zerostat / air blower / brush system can be used in optical analog CD.
LP record player can have other extra features than just ultra-microgroove capacity. Early 1980s was “holophonic” sound, analog(?) HRTF sound, in Pink Floyd Final cut LP etc. Other version of it was “Q sound” in late early 1990s LPs. Those need no decoder in record player. Noise shaping encoding is also possible in vinyl records, those need decoder in player. Also DBX made stereo expander for LP players, improving poor channel separation of LPs. Quadrophonic sound can be “matrixed” in LPs, and other version of quadrophonic sound used ultrasound LP grooves and special needles. Ultra-microgroove records can be made from the beginning to use ultrasound four channel system, but they can play two channel stereo too if four channels are not needed. Special stylus is needed in ultrasound four channel record. Also nowdays is possible to encode unlimited amount of channels between two channels (stereo), in “matrixed” form. So if two or three channels in vinyl record are used it is possible to build “Atmos” multichannel surround system using vinyl record LPs. Earlier was used “dehisser” analog filters that were sold and filtered hiss out of vinyl LPs. That kind of analog dehisser filters can be build inside record player.
All those features, noise shaping, stereo expander (or channel separation expander if there is more than two channels), LP groove surface noise hiss removing and multichannel surround sound can be in vinyl record (noise shaping and multichannel / 4 channel sound encoded) and in vinyl record player.
Then record player needs lots of analog electronics. Special analog ASIC can be made, all analog electronics of record player in one cheap integrated chip, or perhaps field programmable analog array (FPAA) can be used. Anadigm makes cheap FPAAs at about 10 dollar price. Those are optimized for analog audio. Analog CD player can perhaps also use FPAAs for sound processing. Other integrated analog circuits can be used also. In record player front panel is switches that turn on or off noise shaping, multichannel sound, stereo expander etc. when they are needed and when not.
High definition vinyl is improved vinyl record. But it uses digital 3D maps for groove mapping. Those maps can be perhaps be made using analog processing. Optalysys makes analog optical processor that is very fast for video processing. It can perhaps make those 3D maps. Also analog AI chips can be used, both making the LP record and in the record player itself, if needed. FPAAs can be perhaps used also. FPAAs have some noise problems sometimes, but processing of sound of vinyl LP sound is probably not affected by those noise problems in any way.
Ordinary groove LP records can have better sound quality, if their size is larger than usual 12 inch / 30 cm. If size is 12,5 inch / 317 mm, this slightly larger LP still fits in LP bins of shops (probably) if cardboard sleeve of LP is thin enough. 17 mm is not much size enlargement, but in 45 rpm LP record slightly more playing time and LP surface area can make better sound.
Dust cover of LP player is the limiting factor of how big LP records can be. There seems to be in average three sizes of LP player dust cover sizes, “universal” size of 360 mm / 14 inch depth of dust cover, and then 15 inch / 380 mm depth and then rare 17 inch depth (432 mm). But there is no standard sizes in dust covers, LP player dust covers are in any size and shape, those 36 cm / 38 cm / 43 cm are only average, LP player can have any size depth and width dust covers, but there seems to be three statistical average sizes. Even in america 360 mm is “universal” dust cover and called 14 inch (14 inch is 356 mm).
If LP record is 345 mm (13,6 inch) it fits inside 360 mm depth dust cover (perhaps), and 369 mm (14,6 inch) LP fits inside 380 mm dust cover (perhaps), and 405 mm or 415 mm (16 or 16,34 inch) LP fits inside 17 inch deep dust cover. Because LP pressings are made as small as 100 copies, or 250 copies etc., is possible to make several size LP records, for several size dust cover LP players, those three sizes are statistical average perhaps and fits inside most record player dust covers perhaps. The size of dust cover is deepness of it, not width. In deepness of dust cover fits tonearm and LP record. So instead of pressing LPs of 30 cm size only, sizes can be four, 317 mm, 345 mm, 369 mm, and 405 mm / or 415 mm. For simplicity s sake 13,6 and 14,6 inch LPs are called then 14 and 15 inch LPs, and last is 16 inch LP.
Now 45 rpm records can have long playing time and sound quality also improves as area of LP record expands. Even 78 rpm can be used in normal groove LPs if LP is big enough. LP pressings can have different rpm, 45 and 78 rpm can be used, instead of just 33 1/3 rpm. High definition vinyl also offers more tightly spaced grooves and better sound quality than normal LP pressings so higher rpm / more playing time is available that way too.
Also variable playing speed is possible. CD players have coil in laser pickup that make pickup to follow pits of CD records accurately. Similar cheap coils that CD player use can be used in LP player tonearm. It measures angle of tonearm accurately. Now if variable playing speed is used, for example LP starts playing at 33 1/3 or 45 rpm, and then steadily increases playing speed to 78 rpm or 133 1/3 rpm, and then goes not faster than that because sound quality is now enough, and rest of the LP then plays at constant speed of 78 rpm or 133 1/3 rpm. In the record player front panel is switches what speed is used, and is the speed variable or not. Measuring tonearm angle it is possible to measure and control playing speed, there can be microcontroller or microprocessor in LP player that does required calculations. There can even be graphic display with touch control in vinyl LP player, like in tablet PC, for “programming” vinyl LP player, and vinyl LP record player has CPU with operating system etc. like tablet PC or smartphone. But soundpath is purely analog, digital system is only used for monitoring sound.
Also phono cartridges that use laser to track vinyl LP grooves (optical cartridges) can benefit from small air blower in cartridge, small brush in cartridge, and miniature zerostat in cartridge, cleaning vinyl LP grooves before lasers “take picture” of LP grooves and turn that to sound. Now special record player that encloses LP record inside LP player like CD players do, is not needed, ordinary LP player is enough, only cartridge/tonearm must be changed if optical cartridge is used, those three cleaning methods make LP grooves clean before optical cartridge “plays” it.
So instead of double cartridge for two needles, ultra-microgroove and normal, can be laser (optical) phono cartridge. Not even perhaps vinyl LP record is needed if optical cartridge is used, only picture of soundwaves that optical cartridge can interpret is needed. This picture of soundwaves is made by analog means, and again there is switch in front panel of record player that with turn of a switch makes record player use its analog electronics to decode that picture of soundwaves and turn that to sound. Picture of soundwaves is flexible about 30 cm / 12 inch diameter round picture with hole in the middle like LP record, it is put to LP turntable like LP record. This picture is made using some analog method, it is 2D or 3D picture of sound, not perhaps like optical soundtrack of film reels but some modern way to picture or represent soundwaves and generated by analog processing. Perhaps a hologram. Perhaps Optalysys or some other analog processor other can make this picture, and in record player is analog electronics that can decode this picture.
Also if high definition vinyl makes good sound quality, it is possible to make flexidisc LPs of 30 cm / 12 inch diameter and send those light and flexible discs by post, as postal letters. Those 12 inch flexidiscs have perhaps good sound quality, like normal vinyl LPs have, if they are high definition vinyl pressed. And because they are flexible they can go through mail slot when slightly squeezed.
In record player front panel are switches where can be chosen 33 1/3, 45, 78, or 133 1/3 rpm speed, and also can be chosen is this speed fixed (continuous) or variable (continuous variable). For example if variable speed is chosen then for example starting speed is chosen 33 1/3 and than highest speed when slowly record player increases speed when needle comes closer to disc center is chosen to be 78 rpm. Now record player automatically begins playing 33 1/3 and then maintains this sound quality in the recording by increasing playing speed so that sound quality is still as good as outer edge of the vinyl record although needle comes closer to disc center. When record player reaches 78 rpm and needle still is not in the end of the record, playing speed becomes fixed (continuous) and does not increase from 78 rpm.