impact sound transmission level
1Sound transmission class — (or STC) is an integer rating of how well a building partition attenuates airborne sound. In the USA, it is widely used to rate interior partitions, ceilings/floors, doors, windows and exterior wall configurations (see ASTM International… …
2Sound recording and reproduction — Sound recorder redirects here. For the audio recording program computer software, see Sound Recorder (Windows). Sound recording and reproduction is an electrical or mechanical inscription and re creation of sound waves, such as spoken voice,… …
3Sound Reduction Index — This article needs to be created. Key words: * Sound Reduction Index. * Difference Level * Standardized Difference Level * Normalized Difference Level. * ISO 140 * Building Regulations * Acoustics * Sound Insulation.Draft Article:References*… …
4Level crossing — This article is about at grade intersections between railway and road. For where two rail lines cross, see level junction. For a type of nuclear receptor (RXR), see Retinoid X receptor. A level crossing at Chertsey, England, as the barriers rise …
5Electric power transmission — Electric transmission redirects here. For vehicle transmissions, see diesel electric transmission. 400 kV high tension transmission lines near Madrid Electric power transmission or high voltage electric transmission is the bulk transfer of… …
6Alignment level — The alignment level in an audio signal chain or on an audio recording is a defined anchor point that represents a reasonable or typical level. It does not represent a particular sound level or signal level or digital representation, but it can be …
7Speed of sound — Sound is a vibration that travels through an elastic medium as a wave. The speed of sound describes how much distance such a wave travels in a certain amount of time. In SI Units with dry air at 20 °C (68 °F), the speed of sound is 343 m/s. This… …
8musical sound — Introduction any tone with characteristics such as controlled pitch and timbre. The sounds are produced by instruments in which the periodic vibrations can be controlled by the performer. That some sounds are intrinsically musical,… …
9Environmental impact of wind power — Livestock ignore wind turbines,[1] and continue to graze as they did before wind turbines were installed. Compared to the environmental impact of traditional energy sources, the environmental impact of wind power is relatively minor. Wind power… …
10Meyer Sound Laboratories — Type Professional Audio Manufacturer Industry Professional Audio Founded 1979 Headquarters …
