Are distortion levels a problem with digital signal processing hearing aids and frequency modulation (FM) systems?

The purpose of this study was to examine objective and subjective distortion present when frequency modulation (FM) systems were coupled with four digital signal processing (DSP) hearing aids. Electroacoustic analysis and subjective listening tests by experienced audiologists revealed that distortion levels varied across hearing aids and channels.

Differences in added stable gain between manufacturers, audiometric configurations, earmold styles, and frequency bands

Added stable gain (ASG) was measured to assess the differences in feedback reduction algorithms across six manufacturers, two earmold styles, ten audiograms, and three frequency bands.

Integration of duration and frequency in discrimination between pure tones

This dissertation investigates discrimination between pure tones. Three questions were investigated: can listeners integrate frequency and duration information in the discrimination of pure tones; how does the discriminability of duration-frequency compounds relate to the discriminability of the changes in the individual dimensions; and how is the integration of these two dimensions affected by the parameters of the stimuli in which the changes in duration and frequency are introduced.

Threshold adaptation, temporal integration and frequency discrimination-learning in hearing impaired children

This paper is a review of a study to evaluate the usefulness of a laboratory approach to auditory training with hearing impaired children.