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.
UAD vs. UDT Designations. When the term âU/D/Tâ or âUDTâ appears in an instrument, it means the opposite. It stands for âunder declaration of trust.â The grantor and the trustee are the same person. The grantor maintains control over the assets he has placed into it, and he can only do this if the trust is revocable.