Gravel chub silt and debris. They are more often found in areas with limited macrophytes and larger root aquatic plants, algae and moss. Because of their need of a specialized clean habitats, the gravel chub is especially vulnerable to various forms of pollution, especially from agriculture practices that create erosion and excessive silt. In past sampling surveys the gravel chub had been found as far north in the Upper Iowa River as Le Roy, Minnesota, but because of excessive amounts of sewage, pesticides and sedimentation of rocks and sand, this is no longer the case. The presence of gravel chubs in a
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