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(See link for the shape idea, closest I could find.)
This is a regular vinyl record but shaped like an amorphous
blob. When the master is being cut the pattern of the
record is copied into a guide for the cutting stylus so it
follows the pattern. No modification is necessary for the
record
player and the music will play as it was recorded,
but the play arm will swing in and out wildly like it's
stoned, like you were when you purchased this thing.
Great for re-issues of classic psychedelic rock.
Best I could find, but let me find something better.
https://images.app....l/gKpDzQqkzDZPf2WeA
[doctorremulac3, May 10 2020]
Yeaaa, more like this, still not what I'm picturing.
https://images.app....l/uJ8MD8NoRfwJCXFGA
[doctorremulac3, May 10 2020]
Inspired by this obviously.
https://images.app....l/AhPTWS3LHsatfM4h9
[doctorremulac3, May 10 2020]
Silver_20Surfer_20Cartridge
[xenzag, May 11 2020]
One shape and color scheme might be an homage to these light shows.
https://www.youtube...watch?v=XUxyV1sw4Rg
[doctorremulac3, May 11 2020]
This is pretty interesting.
M_f6bius_20Record_20Player
Mobius strip record. [doctorremulac3, May 12 2020]
This is also pretty cool.
https://www.youtube...fY&feature=youtu.be
Mobius strip music box. [doctorremulac3, May 12 2020]
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I have a feeling we have discussed non-tangential tracking issues here before? I think it works but there are issues to do with side-loading the needle and wear on the groove wall perhaps? I'm feeling vague this afternoon. |
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If there were an issue the cutting stylus could have an
algorithm to compensate for it but I doubt it would be
necessary. |
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We're talking 33 1/3rd RPM, it's not going very fast. I see
that there would be movement imparted to the playback
needle that you don't get with a round, progressively smaller
spiral path, but again, it would be worth it for the cool look. |
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Like [pocmloc], I'm feeling some déja vu here. |
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Very cool links, but these are all just spiral groove
configurations put in the center of weird shapes. |
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This idea is for the grooves to follow the shape of the
record. |
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By necessity, the shapes would need to be rounded.
I'm thinking those blobs they'd have projected at the
back of the stage during 1960s rock concerts. (link) |
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I see what your saying but I'm not sure it would
appreciably affect the sound of the playback. If
you're looking at it like a car on a road, the regular
record is a relatively straight round track. This
would be turning right and left and hitting the
needle like a car reacts driving a curvy racetrack.
Hard left turn, the car and needle, gets more
pressure on the right hand side, hard right turn,
more pressure on the left hand side. |
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So I see that but I think you could have that
compensated for. For the left turn the left
vibration smoothes out a bit and the side receiving
less pressure, the right side expands. So you'd
compress and expand as the record turned left and
right. You'd do this by doing a test track letting the
sound get crushed by the record's turns and twists,
and use that to use your compressors and
expanders to compensate. |
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Or you could have shock absorvers and dampers on
the needle giving it a little give. Actually scratch
that, it would have to work on a standard record
player. |
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So cut the disk, play it back into an audio
analyzing program and make whatever
modifications to the next cut that would reduce
the curvy path effect. Does the high end get
reduced because the needle is getting pressured?
Turn the high end up. |
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Whatever it's doing, compensate. |
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Or better yet, just let the record sound weird. |
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//Like [pocmloc], I'm feeling some déja vu here.// |
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Ditto.
A posting from [FarmerJohn] involving a train or somesuch... |
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// No modification is necessary for the record player |
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Where's the fun in that? I think it's possible to create a turntable with a 90° bend in the middle, perhaps out of linked wedges that will flop over or ride up an obstacle. |
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Was going to suggest a mobius strip record but
already done of course. (link) |
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A toroidal "record" which "rolled" around its circumferential axis would replay endlessly ; but the material would need to be an elastomer, which would make groove geometry very challenging. |
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Would it be possible to make some kind of mechanical pantograph-like contraption which engaged with the turntable platter and base unit, and through a set of very thin linkages shifted the centre of rotation of the record back and forth so that the contact point of the needle and groove remained static? I imagine this all engineered into a 2mm thick record disc, so that you simply pick up the record, plop it on the turntable, and a little hinged foot falls down outside the radius of the platter to sit on the surface of the record deck. |
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wait... no it doesn't... well I mean it did, but then a Spirograph record player has already been discussed on another posting so it's redundant. |
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