Topic
Audio induction loop
About: Audio induction loop is a research topic. Over the lifetime, 3 publications have been published within this topic receiving 15 citations.
Papers
Journal Article•
TL;DR: All three of the tested listening systems are suitable for listeners with various degrees of hearing losses, and analysis of variance indicated that the main effects of systems, groups and room S/N were significant.
Abstract: "Listening systems" are used for hearing impaired listeners as an alternative to public address systems (PA) used for the general public. These listening systems allow individual control of sound pressure level and minimize the effects of background noise and room reverberation. Three listening systems, based on an audio induction loop (AL), frequency modulation of radio frequencies (FM), and modulation of infrared light (IR) were compared among themselves and with a PA system in a medium-size classroom. Listening groups were normal hearing, hearing impaired, hearing aid users, and elderly. Word identification scores were obtained with the Modified Rhyme Test at two conditions: with a babble of 12 voices at a speech-to-noise ratio (S/N) of + 8 dB, and without the babble at S/N of +20 dB. Analysis of variance indicated that the main effects of systems, groups and room S/N were significant. Also significant were interactions of systems by groups, and systems by S/N. For all groups, the three listening systems provided better scores than the PA system. It can be concluded that all three of the tested listening systems are suitable for listeners with various degrees of hearing losses.
14 citations
TL;DR: Investigation of the intelligibility of speech transduced through a classroom-installed FM system and a conventional induction loop amplification system indicates that speech reproduced via the FM system is significantly better than that of the conventional audio induction loop used in this study.
Abstract: This study was designed to investigate the intelligibility of speech transduced through a classroom-installed FM system and a conventional induction loop amplification (ILA) system and to examine the applicability of an FM adapter when used with commercially available hearing aids. Findings indicate that speech reproduced via the FM system is significantly better than that of the conventional audio induction loop used in this study. It seems likely that the irregular high-frequency response of the ILA system was responsible for this difference. When an FM adapter was used in conjunction with body-type hearing aids, the frequency response of the telecoil along with the positioning of the adapter determine the total performance of the aid
2 citations
Patent•
19 Apr 2017
TL;DR: In this article, an audio induction loop driver transfer function is selected to provide a flat frequency response across the audio range, where a plurality of test input signals at spaced apart frequencies are used to produce test output signals to the loop, the current produced in the loop (103) is detected, and a transfer function (C1 C32) is selected such that the same current is produced at each test signal frequency.
Abstract: An audio induction loop driver transfer function is selected to provide a flat frequency response across the audio range. A driver (104) for an induction loop hearing aid system (100) comprises an input (e.g. microphone (105)) for receiving an input audio signal; a processor for processing the audio input signal to produce an output audio signal; and an output for outputting the output audio signal to an induction loop (103). A setup module (420) (e.g. within a controller (202)), is operable to perform a setup process, whereby: a plurality of test input signals at spaced apart frequencies (e.g. between 100Hz and 5kHz) are used to produce test output signals to the loop (103), the current produced in the loop (103) is detected, and a transfer function (C1 C32) is selected such that the same current is produced at each test signal frequency.
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2017 | 1 |
| 1986 | 1 |
| 1976 | 1 |