Advances in digital technology and the associated introduction of new forms of distortion led us to investigate supplementary measures of electroacoustic distortion for hearing aids. Mathematical techniques were used to formulate a working model in which the hearing aid acts as a time varying linear filter. This model embodies an approach to separating distortion into perceptually relevant and ...

The Teleface Project, a project that aims at evaluating the possibilities for a telephone communication aid for hard of hearing persons, is presented as well as the different parts of the project: audio-visual speech synthesis, visual speech measurement and multimodal speech intelligibility studies. The experiments showed a noticeable intelligibility advantage for the addition of the face infor...

stated that we are in the age of outcome measures; these measures are essential in the assessment of hearing aid efficacy. While numerous efforts have been made to predict hearing aid outcome, an accurate method of predicting how people will utilize their hearing aids does not exist. Furthermore, it is not known why some individuals are better hearing aid users than others. The research we have...

Ear moulds effectively couple the hearing aid to ears and provide a sound channel ear from aid. are usually prepared using manual procedure, but with latest technology mould can also be stereolithography (SLA) printing processes. However, speech output characteristics of this printed not validated in literature. This study compares between conventional without vents.

An understanding of the relationship of speech and language symptoms to lesions in the frontal region of the dominant hemisphere depends on a fuller description of the speech phenomena than can be provided by transcriptional or acoustic investigation alone. This paper provides examples of how articulatory movement tracking can aid in describing apraxic speech deficits.

Widex has for a long time used a default prescription which, for speech signals, is similar to NAL-NL1. In the current paper, this default prescription is compared to an alternative prescription with more NAL-NL2-like characteristics. The research was prompted by the introduction of a new hearing aid, UNIQUE.2 Some of the implemented features in the new hearing aid change the output from the he...

BACKGROUND Bilateral contralateral routing of signals (BiCROS) hearing aids function to restore audibility of sounds originating from the side of the unaidable ear. However, when speech is presented to the side of the aidable ear and noise to the side of the unaidable ear, a BiCROS arrangement may reduce intelligibility of the speech signal. This negative effect may be circumvented if an on/off...

We created an application specialized in prosodic tutoring, called the Prosodic Module(PM). The PM is composed of two different sets of Learning Activities, the first one dealing with prosodic problems at word syllabic level, the second one dealing with prosodic problems at phonological phrase and utterance level. The PM is able to detect significant deviations from a master's word/ phrase/ utt...

This study compared subject performance and preference using a compression-limiting hearing aid set to linear amplification (program 1) and wide dynamic range compression (WDRC, program 2). The frequency responses of the hearing aid were matched to a 65 dB SPL signal and maximum output to a 90 dB SPL signal. Twenty subjects with moderate to moderately severe sensorineural hearing loss were test...

In this thesis, I present two novel ways in which speech recognition technology might aid students with vocabulary acquisition in a foreign language. While research in the applied linguistics field of second language acquisition (SLA) increasingly suggests that students of a foreign language should learn through meaningful interactions carried out in that language, teachers are rarely equipped ...