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2. Knot density - Wikipedia

   en.wikipedia.org/wiki/Knot_density

   A carpet with a lesser knot density is better adapted to bold, geometric designs and can utilize a long pile for softer, more reflective surface that appeals to the sense of touch." [9] Hand-tying of knots is a very labour-intensive task. An average weaver can tie almost 10,000 knots per day. More difficult patterns with an above-average knot ...

3. Flooring - Wikipedia

   en.wikipedia.org/wiki/Flooring

   The common installation method for laminate flooring is a floating installation, which means the floor connects to each other to form interlocked flooring system and is not attached to the sub-floor which means it is free to "float" over a variety of sub-floors. This includes existing flooring like ceramic tile and hardwood floors.

4. Tatami - Wikipedia

   en.wikipedia.org/wiki/Tatami

   In Japan, the size of a room is usually measured in relation to the size of tatami mats (-畳, -jō), about 1.653 m 2 (17.79 sq ft) for a standard Nagoya-size tatami. Alternatively, in terms of traditional Japanese area units , room area (and especially house floor area) is measured in terms of tsubo , where one tsubo is the area of two tatami ...

5. Noise reduction coefficient - Wikipedia

   en.wikipedia.org/wiki/Noise_reduction_coefficient

   Absorption coefficients used to calculate NRC are commonly determined in reverberation rooms of qualified acoustical laboratory test facilities using samples of the particular materials of specified size (typically 72 square feet [6.7 m 2] in an 8 ft × 9 ft [2.4 m × 2.7 m] configuration) and appropriate mounting.

6. Room modes - Wikipedia

   en.wikipedia.org/wiki/Room_modes

   Room modes are the collection of resonances that exist in a room when the room is excited by an acoustic source such as a loudspeaker. Most rooms have their fundamental resonances in the 20 Hz to 200 Hz region, each frequency being related to one or more of the room's dimensions or a divisor thereof. These resonances affect the low-frequency ...

7. Home improvement - Wikipedia

   en.wikipedia.org/wiki/Home_improvement

   The concept of home improvement, home renovation or remodeling is the process of renovating, making improvements or making additions to one's home. [1] Home improvement can consist of projects that upgrade an existing home interior (such as electrical and plumbing), exterior (masonry, concrete, siding, roofing) or other improvements to the property (i.e. garden work or garage maintenance ...