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.
Developers seek CDD approval to obtain low-cost financing by issuing tax-exempt bonds, with lower interest rates. CDDs also have the power to collect fees, levy lienable assessments or ad valorem taxes against properties within the project for repayment. CDDs are required to have a five-member board of supervisors, elected by the landowners.