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Thomas Lunner

Research Area Manager / Adj. Professor

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mail@eriksholm.com

TFS deficits appear to have consequences for speech understanding in complex situations. As part of a collaboration between Eriksholm and the University of Cambridge, a clinical test for measuring TFS sensitivity was developed.

Developing a test of TFS sensitivity

Research increasingly indicates that speech understanding in complex situations is connected to TFS sensitivity;1,2 thus it would be useful to be able to measure this clinically. The aim of this project was to develop a fast and reliable TFS test. A lateralization task was chosen since this test necessitates very little explanation. The listener’s task was to detect binaural TFS changes in tonal low-frequency (LF) stimuli – hence the ‘TFS-LF test’ title.

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Test validation

Validation of the TFS-LF test involved a number of experiments with normal-hearing listeners. The results showed that in general, they were able to perform the test reliably; that there was no significant effect of training, and that a sensation level of 30 dB was sufficient for obtaining stable performance.3 Therefore the TFS-LF test has also been used to measure the TFS sensitivity of hearing-impaired listeners.1,4


Further reading

1 Hopkins K, Moore BCJ (2011). The effects of age and cochlear hearing loss on temporal fine structure sensitivity, frequency selectivity, and speech reception in noise. Journal of the Acoustical Society of America, 130(1), pp. 334-349.

2 Neher T, Laugesen S, Jensen NS, Kragelund L (2011). Can basic auditory and cognitive measures predict hearing-impaired listeners’ localization and spatial speech recognition abilities? Journal of the Acoustical Society of America, 130(3), p. 1542-1558.

3 Hopkins K, Moore BC J (2010). Development of a fast method for measuring sensitivity to temporal fine structure information at low frequencies. International Journal of Audiology, 49(12), p. 940-946.

4 Lunner T, Neher T, Hopkins K, Moore BCJ (2010). Sensitivity to low-frequency temporal fine structure is correlated with aided spatial release from masking. Poster presentation, International Hearing Aid Research Conference, IHCON. Lake Tahoe, California, USA.

Learn more

  • learnmore-poster

    Poster

    Sensitivity to Low-Frequency Temporal Fine Structure

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    Study Partners

    Kathryn Hopkins, University of Manchester, and Brian C. J. Moore, University of Cambridge