![]() Therefore, our primary objective is to have the strongest signal possible on a master disc and grooves that are rigid and deep. Some definition is inevitably eluded during the manufacturing steps. And that allows longer sides in good quality.” Misjah. DMM noise floor is 10-15 decibels lower than lacquer and it is a rigid material, producing no echo so grooves can be as close as possible. On lacquer that imposes more chances for overcuts and pre/post echo problems since it’s a flexible material. ![]() But longer sides means lower level, higher noise floor and narrower groove spacing. ![]() “Physically there is no difference in playback length for lacquer or DMM. For this particular reason, DMM is known to accommodate longer sides. As a consequence, causing distortion even at a moderate level output.Įcho issues are less common with DMM (Direct Metal Mastering) since copper is a more rigid material than lacquer. It is because severely reduced groove speed in the inner circles can’t accurately trace intense high-frequency modulations. Track sequencing that won’t take peripheral groove speed into consideration will become an obstacle for cutting longer sides in good quality as well. Meaning that the cutting equipment will work under less pressure, being able to more accurately gouge complex groove geometry of the upper frequency spectrum. At half speed both frequency spectrum and groove velocity are lowered by two. In a situation of intense high frequency recording, half speed mastering may allow louder sides without distortion. Excessive sibilance such as from vocals or muted trumpets will cause difficulties in cutting longer sides without distortion at a decent output level. Insufficient microphone placement causing phase correlation issues will eat a lot of space on the disc. Sonic characteristics of a program material will have huge effects on how many minutes we may cut on the side in good quality. Stereo information will always cut deeper, and hence wider – occupying more space than for example a monophonic recording. Consequently, saving available space on a record and allowing longer sides to be cut in good quality. While dynamic audio material with loud and silent parts results in dynamic cut, with narrower grooves at quiet places and wide deep grooves at loud passages. It also means, that continuously loud and heavy bass music will eat the available space on a record in a shorter period of time. Since grooves inscribed on a vinyl record are analogous to audio wave-forms – the wider and deeper cuts means louder music, and vice versa. A mastering engineer at Erika Records.įirst and foremost, the playback time on vinyl records is strictly limited to the disc diameter. Also more chances of over cuts causing skips, because grooves need to be cut close together at a narrower groove depth. More chance of audible noise (pressing noise floor). The longer the playing time, the lower the volume of the record.
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