Current Research Projects & Publications
- University-Community Collaboration on Hearing and Aging
We have several clinical studies being planned in conjunction with the team at the Western Institute for the Deaf and Hard of Hearing (WIDHH) and other collaborators.
- Hearing Care for Older Adults
The lab is currently conducting several studies involving hearing care for older adults. One area aims to investigate consequences for untreated hearing loss. The second area examines the barriers and facilitators to hearing health care for older adults. Much of this work is being conducted together with other health-care professionals.
- rEDI Software
We have developed software for quantifying changes to the temporal envelope of speech. Available for free download via Flintbox.
(NSERC funded)
- Effects of acoustic cue redundancy and aging in speech recognition
In this project, we study non-hearing-impaired older and younger adults to determine any difference in how they weight individual and redundant stop consonant cues in recorded speech.
(NSERC funded)
- Acoustic effects of hearing aid processing
Several studies examine the acoustic effects of hearing aid processing.
Among these studies are:
i) the quantification of noise reduction algorithms on speech and noise;
ii) The use of an inversion technique to separate signals and noise;
iii) The effects of hearing aid processing on stimuli used in electrophysiological measures.
A Selection of Research Publications
REFEREED PUBLICATIONS:
Holliday, H. V., Jenstad, L.M., Grosjean, G. & Purves, B. (2015). “You can lead a horse to water…”: Focus group perspectives on initiating and supporting hearing health change in older adults. American Journal of Audiology. DOI: 10.1044/2015_AJA-14-0073.
Jenstad L.M. & Donnelly, M. (2015). Hearing care for elders: A personal reflection on participatory action learning with primary care providers. American Journal of Audiology. DOI: 10.1044/2014_AJA-14-0051.
Jenstad L.M. , Marynewich S. & Stapells D. (2012). Slow cortical potentials and amplification II: Acoustic measures. International Journal of Otolaryngology, 2012. Link
Marynewich S., Jenstad L.M. & Stapells D. (2012). Slow cortical potentials and amplification 1: N1-P2 measures. International Journal of Otolaryngology, 2012. Link
Jenstad LM & Moon J (2011). Systematic review of barriers and facilitators to hearing aid uptake in older adults. Audiology Research, 1(1S), 91-96. DOI: 10.4081/audiores.2011.e25 . Link
Marinova-Todd, S.H., Siu, C.K. & Jenstad, L.M. (2011). Speech audiometry with non-native English speakers: The use of digits and Cantonese words as stimuli. Canadian Journal of Speech-Language Pathology and Audiology, 35(3), 220-227. Link
Bingham, K., Jenstad, L.M. & Shahnaz, N. (2009). Longitudinal changes in infants’ real-ear-to-coupler difference (RECD) measures. Journal of the American Academy of Audiology, 20(9), 558-568.
Jenstad, L.M., Bagatto, M.P., Seewald, R.C., Scollie, S.D., Cornelisse, L.E. & Scicluna, R. (2007). Evaluation of the DSL[i/o] algorithm for adults with hearing loss: The acceptable range for amplified conversational speech. Ear and Hearing, 28(6), 793-811.
Jenstad, L.M. & Souza, P.E. (2007). Temporal envelope changes of compression and speech rate: The combined effects on recognition for older adults. Journal of Speech, Language, and Hearing Research, 50 (5), 1123-38.
Souza, P.E., Jenstad, L.M. & Boike, K.T. (2006). Measuring the acoustic effects of compression amplification on speech in noise (L). Journal of the Acoustical Society of America, 119(1), 41-44.
Jenstad, L.M. & Souza, P.E. (2005). Quantifying the effect of hearing aid release time on speech acoustics and intelligibility. Journal of Speech- Language-Hearing Research, 48(3), 651-667.
Souza, P.E., Jenstad, L.M. & Folino, R. (2005). Using multichannel WDRC in severely impaired listeners: Effects on speech recognition and quality. Ear and Hearing. 26(2): 120-131.
Jenstad, L.M., Van Tasell, D. & Ewert, C.M. (2003). Hearing aid troubleshooting based on patients’ descriptors. Journal of the American Academy of Audiology. 14(7): 347-361.
Jenstad, L.M., Pumford, J., Seewald, R.C. & Cornelisse, L.E. (2000) . Comparison of linear gain and wide-dynamic-range compression (WDRC) hearing aid circuits: Aided loudness measures. Ear and Hearing, 21(1): 32-44.
Pumford, J., Seewald, R.C., Scollie, S.D. & Jenstad, L.M. (2000). Speech recognition in diffuse noise using in-the-ear and behind-the-ear dual- microphone hearing instruments. Journal of American Academy of Audiology, 11: 23-35.
Jenstad, L.M., Seewald, R.C., Cornelisse, L.E. & Shantz, J. (1999). Comparison of linear gain and wide-dynamic-range compression hearing aid circuits: Aided speech perception measures. Ear and Hearing, 20(2): 117-126.
Scollie, S.D., Seewald, R.C., Cornelisse, L.E. & Jenstad, L.M. (1998). Validity and repeatability of level-independent HL to SPL transforms. Ear and Hearing, 19(5): 407-413.
Jenstad, L.M., Cornelisse, L.E. & Seewald, R.C. (1997). Effects of test procedure on individual loudness functions. Ear and Hearing, 18(5):401-408.
NON-REFEREED PUBLICATIONS:
Bacsfalvi P., Jenstad L.M. & Robb E. (2012). The teacher as listener: A new experience with Phonak’s Dynamic SoundField MultiTalker Network FM System. Communique. 25(1), 30-31.
Jenstad L.M. (2009). Now that Newborn Hearing Screening is universal, what about adults? Canadian Hearing Report, 4(2), p 22-23.
Jenstad L.M. (2009). What’s new in outer hair cell motility? Canadian Hearing Report, 4(1), p 19-20.
Jenstad L.M. (2008). Modelling of the auditory system. Canadian Hearing Report, 3(3), p 18-19.
Jenstad L.M. (2008). Age-related hearing loss and speech recognition. Canadian Hearing Report, 3(2), p 37-38.
Seewald R., Scollie S., Jenstad L.M. & Cornelisse L. (1999). Is one good non-linear prescription enough?” The Hearing Journal, 52(4), p 36.
CONFERENCE PROCEEDINGS:
Jenstad L.M. & Winsor D.A. (2012). Barriers and facilitators to hearing aid uptake in older females: A qualitative report [Abstract]. International conference on Adult Hearing Screening, Cernobbio, Italy.
Jenstad L.M. (2011). Considerations in hearing aid fitting for older adults. ReSound Virtual Symposium: Meeting the Needs of Aging Adults. Link
Jenstad L.M. & Zakis J. (2011). Using an inversion technique to quantify non-linear hearing aid processing. [Abstract]. Bulletin of the American Auditory Society, 36(1), 54.
Jenstad L.M. (2006). Wide-dynamic-range compression and rapid speech. [Abstract]. AudiologyNOW! Conference program.
Jenstad L.M. & Souza P.E. (2005). The effects of compression parameters on recognition of rapid speech [Abstract]. Bulletin of the American Auditory Society, 30(1), 40.
Jenstad L.M. & Souza P.E. (2004). The effect of release time on speech acoustics and intelligibility [Abstract]. Bulletin of the American Auditory Society, 29(1), 40.
Jenstad L.M. & Souza P.E. (2002) Speech information transmitted by four amplification systems to listeners with severe hearing loss [Abstract]. Association for Research in Otolaryngology, St. Petersburg Beach, FL. Link
Scollie S.D., Jenstad L.M., Seewald R.C., & Joyce M.J. (2000) Prediction of phoneme perception by sensation level [Abstract]. Bulletin of the American Auditory Society, 25(1).
RECENT PRESENTATIONS:
Holliday H., Jenstad L.M., Grosjean G. & Purves B. Evaluation of a health literacy workshop on Hearing Health in Older Adults. International Hearing Aid Research Conference, Lake Tahoe, CA, 2012.
Jenstad L.M., Carter N. & Ciocca V. The effect of acoustic cue redundancy on the perception of stop consonants by older and younger adults. International Hearing Aid Research Conference, Lake Tahoe, CA, 2012.
Jenstad L.M. & Winsor DA. Barriers and facilitators to hearing aid uptake in older females: A qualitative report. International Conference on Adult Hearing Screening, Cernobbio, Italy, June 2012.
Jenstad L.M. & MacDonald M. The association between degree of hearing loss and depression in older adults. Canadian Academy of Audiology, Victoria BC, October 2011.
Chong, F.Y. & Jenstad L.M. The effects of single microphone noise reduction on the acoustics of /s/ and /z/. Canadian Academy of Audiology, Victoria BC, October 2011.
Winsor D. & Jenstad L.M. Barriers and facilitators to hearing aid uptake in older females: A qualitative report. Canadian Academy of Audiology, Victoria BC, October 2011.
Marynewich S., Jenstad L.M., Stapells D.R. Slow cortical potential measures of amplification. Canadian Academy of Audiology, Montreal, October 2010.
Chong F.Y. & Jenstad L.M. The effects of digital noise reduction algorithms on speech and noise. International Hearing Aid Research Conference, Lake Tahoe, CA, 2010.
Jenstad, L.M. & Moon, J. Barriers and facilitators to hearing aid uptake in older adults. International Conference on Adult Hearing Screening, Cernobbio, Italy, June 2010.