A semitone, also called a half step or a half tone, is the smallest musical interval commonly used in Western tonal music, and it is considered the most dissonant when sounded harmonically. It is defined as the interval between two adjacent notes in a 12-tone scale (e.g. from C to C â¯).9-tone equal temperament distinguishes between the chromatic and diatonic semitones; in this tuning, the chromatic semitone is one step of the scale (play 63.2 cents (helpÂ·info)), and the diatonic semitone is two (play 126.3 cents (helpÂ·info)).
How to install underlay for laminate flooring. Preparing the floorâs surface to install underlay. The first step of the process is to prepare properly the floorâs surface, before installing the underlay and laminate flooring.Consequently, remove all bumps and other flooring irregularities and make sure that the surface is completely dry.he first step of the process is to prepare properly the floorâs surface, before installing the underlay and laminate flooring. Consequently, remove all bumps and other flooring irregularities and make sure that the surface is completely dry.
Some laminate flooring, such as Pergo Accolade and DuPont RealTouch, have the underlayment already attached to the bottom of the floor. So, not only is it unnecessary to add extra laminate underlay, it is not advised. Otherwise, you will end up with a floor that is too squishy and does not wear well.inally, sub-floor imperfections may telegraph to the surface of your laminate. Laminate underlayment will: 1  Provide your floor a bit more thermal insulation. 2  Bridge minor gaps that subfloors or existing floors have. 3  Absorb sound. 4  Make it easier for you to walk because it's softer.