quoted 4 lines Whilst we're on the subject of locks, anyone know how they made? Because,
> Whilst we're on the subject of locks, anyone know how they made? Because,
> thinking about it, the groove needs to be the exact length of the bar.
> Therefore depending on the length of the bar, the groove needs to be in
> an exact position, a fixed distance away from the centre.
Records rotate at a constant speed, so one revolution of the record takes
a fixed period of time no matter where the groove is located physically on
the platter. All you have to do is match the tempo (if any) to the length
of a single rotation to get a BPM that's a direct multiple of the turntable
speed (like 100 or 133 1/3 bpm at 33 1/3; 90 or 135 bpm at 45).
--
::: Lazlo (lazlo@swcp.com;
http://www.swcp.com/lazlo)