Amplification and Perception Lab testing

Restoration of spectral resolution with hearing-aid amplification

Purpose: It is well known that listeners use differences in level across frequency (i.e. spectral cues) to decode different speech sounds, yet the effect of hearing-aid amplification on the ability to perceive spectral cues is not well understood. Thus, the purpose of this study is to quantify the effect of hearing-aid amplification on the perception of spectral cues. Outcomes from this study will help clinicians select hearing-aid amplification that improve the ability of adults with hearing loss to perceive spectral cues in speech.

Participants: Males or females 19 years or older with normal hearing or hearing loss who are proficient in spoken English. Hearing aid use is not required.

Auditory perception in adults with hearing loss

Purpose: The purpose of this study is to quantify the effect of hearing-aid amplification on the perception temporal cues (changes in level over time) and cues used to determine the location of a sound in space. Outcomes from this study will help clinicians select hearing-aid amplification that improve the ability of adults with hearing loss to perceive temporal and location cues in speech.

Participants: Males or females 19 years or older with normal hearing or hearing loss who are proficient in spoken English. Hearing aid use in not required.

Capstones

  • Hannah Smith is examining the effect of the NAL-NL2 prescriptive procedure on access to spectral cues, quantified using the psychophysical tuning curve.
  • Sarah Garvey is examining the effect of the Desired Sensation Level prescriptive procedure on access to spectral cues, quantified using the psychophysical tuning curve.
  • Emma Brandt is examining the effect of the hearing-aid compression speed on the perception of the interaural level difference.