Cox, Johnson, and Alexander (2012) report cochlear dead regions (DRs) occur when inner hair cells at a given frequency are lost or malfunctioning. Previous publications have suggested hearing-aid high-frequency gain should be attenuated in the presence of high frequency DRs.
Precondition for a VdS approval procedure, among others, is proof of a certified quality management system in accordance with DIN EN ISO 9001 for the manufacturing facility of the product.
Virginia Winery Distribution Company. Established in 2008, the Virginia Winery Distribution Company (VWDC) is a non-profit, non-stock corporation created by the Virginia Department of Agriculture and Consumer Services (VDACS) to provide wholesale wine distribution services for Virginia farm wineries.