Power noise (also known as rhythmic noise) takes its inspiration from some of the more structured and distorted early industrial acts, such as Esplendor Geométrico. There are also certain techno and technoid influences. The term "power noise" was originally coined by Raoul Roucka, who records as Noisex. Typically, power noise is based upon a distorted kick drum from a drum machine such as a Roland TR-909, uses militaristic 4/4 beats, and is usually instrumental. Sometimes a melodic component is added, but this is almost always secondary to the rhythm. Power noise tracks are typically structured and danceable, but are known to be occasionally abstract. This genre is showcased at the annual Maschinenfest festival in Krëfel, Germany, as well as at Infest in Bradford, UK.