Gravel areas where there is little traffic. Globally, far more roads are surfaced with gravel than with concrete or tarmac; Russia alone has over of gravel roads. Both sand and small gravel are also important for the manufacture of concrete. Large gravel deposits are a common geological feature, being formed as a result of the weathering and erosion of rocks. The action of rivers and waves tends to pile up gravel in large accumulations. This can sometimes result in gravel becoming compacted and lithified into the sedimentary rock called conglomerate. Where natural gravel deposits are insufficient for human purposes, gravel is
Granular synthesis possible. Greek composer Iannis Xenakis is known as the inventor of the granular synthesis technique. Canadian composer Barry Truax was one of the first to implement real-time versions of this synthesis technique. "Granular synthesis has been implemented in different ways, notably by the Canadian composer Barry Truax." There are now many dedicated devices available for exploring granular synthesis without using a computer. Many of these devices are in the Eurorack modular synthesizer format, such as: Granular synthesis Granular synthesis is a basic sound synthesis method that operates on the microsound time scale. It is based on the same principle as