Conseils pour choix bonne platine vinyle

[mélaudiophile]

Quelques renseignements sur le mastering du vinyle:



It is an important step to allow a better optimization of the file for the cutting vinyl.
Several points are controlled:

• The duration of a vinyl side.
  The available time of a disc depends on its size (7, 10, 12 inches / 15, 25, 30 cm) and its speed (33 or 45 RPM or 78 RPM). The cutting will create a groove which will be more or less wide according to the sound level. If we cut with a high sound level, the furrow will be wider lateral modulation, so we will have a shorter time on one side. On the contrary, if we cut with a lower level, the width of the furrow will be reduced, we will have a longer time. But the adjustment of the sound level has its limits, you can’t cut too loud because you have to keep a tracking that allows a smooth playback on all the decks. And you can’t cut too low, because you lose signal to noise ratio. If the tracks are compressed in dynamics, i.e. with a high average sound level, you must either reduce the duration on one side to have a high sound level, or reduce the sound level to take more time.
  

• Bass management:
  Vinyl has physical constraints that impose to not have bass in stereo, to do this, the bass part must be switched to mono, which is done below 100 Hz or more depending on the type of music.
  

• The management of the crosstalk: Vinyl also has a limit in terms of crosstalk. We are not at 90 dB like in digital, but more towards 30 dB. It is therefore necessary, in the case of tracks very rich in very marked stereo effects, to reduce them to ensure a good tracking when playing the vinyl.
  

• Separation of tracks: A marking is placed between two tracks, which will result in a visible area that will visually identify the beginning of the trackto allow for proper positioning of the cartridge.