Frequency Compression Clinical Trial
Official title:
Do Severe-profound Hearing Impaired Adults Perform Better in Speech Perception With Frequency Compression Switched on or Off or Fitted to Hearing Loss
The purpose of this study is to investigate the functional benefits of frequency compression vs no frequency compression or fitted to hearing loss in severe-profound hearing impaired adults with high frequency hearing losses. Thus, assessing whether hearing aids for this patient population can be adapted to improve speech perception.
Frequency compression is a feature available on some digital hearing aids, which is aimed at increasing the audibility of high frequency sounds. It works by taking sounds above a fixed start frequency and compresses it into lower frequencies where residual hearing is better. ;