SOFTWARE
Frequency
Lowering Fitting Assistants
TEST STIMULI and
DATASETS
Alexander, J.
M., Schmig, S., Wagner, R., Armstrong, S. (2021). Dataset of the
peak height insertion gain (PHIG) method for quantifying acoustic feedback
in hearing aids. Purdue University Research Repository. doi:10.4231/K1WJ-TW90
Alexander, J. M., Plotkowski, A. (2021). Audio files and raw data for
Perceptually Robust English Sentence Test - Revised (PRESTO-R). Purdue University Research
Repository. doi:10.4231/FT0S-1715
Alexander, J. M. (2021). s-sh Confusion Test Audio Files. Purdue University Research
Repository. doi:10.4231/AG8V-DM52
Sinusoidal Pole And
Noise (SPAN) test signals: 750 ms,
1500
ms, 3000
ms
RESEARCH ARTICLES
Alexander,
J.M., Schmig, S., Wagner, R.P., and Armstrong, S. (2021). The peak height insertion gain
(PHIG) method for quantifying acoustic feedback in hearing aids. J. Acoust. Soc. Am., 150, 1635-1651. https://doi.org/10.1121/10.0005987
DeRoy Milvae, K., Alexander, J.M., and Strickland, E.A.
(2021). The relationship between ipsilateral cochlear gain
reduction and speech-in-noise recognition at positive and negative
signal-to-noise ratios. J. Acoust. Soc. Am., 149,
3449-3461. https://doi.org/10.1121/10.0003964
Rallapalli,
V., and Alexander, J.M. (2019).
“Effects of noise and reverberation on speech recognition with
variants of a multichannel adaptive dynamic range compression
scheme,” Int. J. Audiol., 58, 661-669.
Alexander,
J.M. (2019).
“The s-sh confusion test and the effects of frequency
lowering,” J. Speech
Lang. Hear. Res., 62, 1486-1505.
Alexander,
J. M., and Rallapalli, V., (2017). “Acoustic and perceptual effects of
amplitude and frequency compression on high-frequency speech,” J.
Acoust. Soc. Am., 142, 908-923.
Brennan,
M. A., Lewis, D., McCreery, R., Kopun, and J., Alexander, J. M. (2017). “Listening effort and speech
recognition with frequency compression amplification for children and adults with
hearing loss,” J. Am. Acad. Audiol., 28, 823-837.
Lllanos,
F., Alexander, J. M., Stilp, C. E., and Kluender, K. R. (2017). “Power spectral entropy as an
information-theoretic correlate of manner of articulation in American
English,” J. Acoust. Soc. Am., 141, EL127-EL133.
Winiger,
A., Alexander, J. M., and Diefendorf, A. (2016). “Minimal hearing loss:
From a failure based approach to evidence based practice,” Am. J.
Audiol., 25, 232-245.
Plotkowski,
A., and Alexander, J. M. (2016). “A sequential sentence test
paradigm using revised PRESTO sentence lists,” J. Am. Acad. Audiol.,
27, 647-660.
Alexander,
J. M. (2016).
“Nonlinear frequency compression: Influence of start frequency
and input bandwidth on consonant and vowel recognition,” J. Acoust.
Soc. Am., 139, 938-957.
Brennan,
M. A., McCreery, R., Kopun, J., Alexander, J. M., Lewis, D., and
Stelmachowicz, P. G. (2016).
“Masking release in children with hearing loss when using
amplification,” J. Speech Lang. Hear. Res., 59, 110-121.
Rallapalli,
V., and Alexander, J. M. (2015). “Neural-Scaled Entropy
predicts the effects of nonlinear frequency compression on speech
perception,” J. Acoust. Soc. Am., 138, 3061-3072.
Alexander,
J. M., and Masterson, K. M. (2015). “Effects of WDRC release time
and number of channels on output SNR and speech recognition,” Ear and
Hearing, 36, e35-e49.
Brennan,
M. A., McCreery, R., Kopun, J., Alexander, J. M., Lewis, D., and
Stelmachowicz, P. G. (2014). “Paired comparisons of nonlinear
frequency compression, extended bandwidth, and restricted bandwidth
hearing-aid processing for children and adults with hearing loss,” J.
Am. Acad. Audiol., 25, 983-998.
Alexander,
J. M., Kopun, J.G., and Stelmachowicz, P. G. (2014). “Effects of frequency
compression and frequency transposition on fricative and affricate
perception in listeners with normal hearing and mild to moderate hearing
loss,” Ear and Hearing, 35, 519-532.
McCreery,
R. W., Alexander, J. M., Brennan, M. A., Hoover, B., Kopun, J., and
Stelmachowicz, P. G. (2014). “The influence of audio-visual
exposure on speech recognition with nonlinear frequency compression for
children and adults with hearing loss,” Ear and Hearing, 35, 440-447.
Alexander,
J. M., Jenison, R. L., Kluender, K. R. (2011). “Real-time contrast
enhancement to improve speech recognition,” PLoS ONE 6(9), e24630,
doi:10.1371/journal.pone.0024630.
Alexander,
J. M., and Kluender, K. R. (2010). “Temporal properties of
perceptual calibration to local and broad spectral characteristics of a
listening context,” J. Acoust. Soc. Am., 128, 3597-3613.
Stilp,
C. E., Kiefte, M., Alexander, J. M., and Kluender, K. R (2010). “Cochlea-scaled spectral entropy
predicts rate-invariant intelligibility of temporally distorted
sentences,” J. Acoust. Soc. Am., 128, 2112-2126.
Stilp,
C. E., Alexander, J. M., Kiefte, M., and Kluender, K. R. (2010). “Auditory color constancy: Calibration to reliable spectral properties
across speech and nonspeech contexts and targets,” Attent., Percept. & Psychophys., 72, 470-480.
Alexander, J. M., and Kluender, K.
R. (2009).
“Relativity of spectral tilt change in stop consonant
perception by hearing-impaired listeners,” J. Speech Lang. Hear.
Res., 52, 653-670.
Alexander, J. M., and Kluender, K.
R. (2008).
“Relativity of spectral tilt change in stop consonant
perception,” J. Acoust. Soc. Am., 123, 386-396.
Alexander, J. M., and Lutfi, R. A.
(2008).
“Sample discrimination of frequency by hearing-impaired and
normal-hearing listeners,” J. Acoust. Soc. Am., 123, 241-253.
Alexander, J. M., and Lutfi, R. A.
(2004).
“Informational masking of tones in hearing-impaired and
normal-hearing listeners: Sensation level and decision weights,” J.
Acoust. Soc. Am., 116, 2234-2247.
Lutfi, R. A., and Alexander, J. M.
(2005).
“Effects of informational maskers within and across
trials,” J. Acoust. Soc. Am., 118, 322-324.
Lutfi, R. A., Oh, E., Storm, E.,
and Alexander, J. M. (2005). “Classification and
identification of recorded and synthesized impact sounds by practiced
listeners, musicians and nonmusicians,” J. Acoust. Soc. Am., 118,
393-404.
EDITED JOURNAL EDITION
“Hearing
Aid Technology to Improve Speech Intelligibility in Noise,” Joshua M.
Alexander (Ed.) Seminars in
Hearing, 42(3), (https://www.thieme-connect.de/products/ejournals/issue/10.1055/s-011-51957).
Alexander, J.M. (2021).
“Hearing aid technology to improve speech intelligibility in
noise,” Seminars in Hearing, 42(3), 175-185.
REVIEW ARTICLES
Alexander,
J.M. (2019). Frequency
Compression and Transposition.
In J. S. Damico & Martin J. Ball (eds.), The Sage Encyclopedia
of Human Communication Sciences and Disorders (Sage: Thousand Oaks), pp.
781-784.
Alexander,
J. (2016).
“20Q: Frequency Lowering Ten Years Later - New Technology
Innovations,” AudiologyOnline,
Article #18040.
Alexander,
J. M. (2016). Hearing aid delay and
current drain in modern devices.
Canadian Audiologist, 3(4).
Angelo,
K., Alexander, J. M., Christiansen, T. U., Jespersen, C. F. (2015). Oticon frequency composition. Oticon
White Paper.
Alexander,
J. M. (2014). “How to use probe
microphone measures with frequency-lowering hearing aids,” Audiology
Practices, 6(4), 8-13.
Alexander,
J. M. (2013).
“Individual variability in recognition of frequency-lowered
speech,” Semin. Hear., 34, 86-109.
Mueller, H. G., Alexander, J.
M., & Scollie, S. (2013). “Frequency lowering
amplification: function, clinical applications, and practical
tips,” AudiologyOnline,
Article #23076.
Alexander,
J. (2013).
“20Q: The Highs and lows of frequency lowering
amplification,” AudiologyOnline,
Article #11772.
Mueller,
H. G., Alexander, J. M., & Scollie, S. (2013). “20Q: Frequency lowering - the
whole shebang,” AudiologyOnline,
Article #11913.
Alexander,
J. M. (2003).
“Multidimensional Detection Theory,” DOI:
10.13140/RG.2.1.2258.0884.
CONFERENCE PROCEEDINGS
Bouman, T., Barnard, A., and Alexander, J. M. (2017). “Continued drive signal
development for the carbon nanotube thermoacoustic loudspeaker using
techniques derived from the hearing aid industry,” SAE Technical
Paper, 2017-01-1895, doi:10.4271/2017-01-1895.
Stilp, C. E., and Alexander, J. M. (2016). “Spectral contrast effects in
vowel categorization by listeners with sensorineural hearing loss,”
Proceedings of Meetings on Acoustics, 25, doi: 10.1121/2.0000233.
DeRoy Milvae, K., Alexander, J. M., Strickland, E. A. (2015). “Is cochlear gain reduction
related to speech-in-babble performance?” Proceeding of the
International Symposium on Auditory and Audiological Research, 5, 43-50.
Alexander,
J. M., and Hariram, V. (2013). “Neural-scaled
entropy as a Model of Information for Speech Perception,” Proceedings
of Meetings on Acoustics, 19, 050179, doi: 10.1121/1.4799891.
BOOK CHAPTERS
Kluender, K. R., and Alexander, J.
M. (2007).
“Perception of speech sounds,” in P. Dallos and D.
Oertel (Eds.) Handbook of the Senses:
Audition (Elsevier: London).
PATENTS
“Hybrid
Expansive Frequency Compression for Enhancing Speech Perception by
Individuals with High-Frequency Hearing Loss,” J.M. Alexander. (Provisional). https://inventions.prf.org/innovation/7311
J.
M. Alexander (2018). “Enhancing
perception of frequency-lowered speech” (Patent No. US 10,083,702
B2).
R. L.
Jenison, K. R. Kluender, and J. M. Alexander (2017). “System and method for
selective enhancement of speech signals” (Patent No. US 9,706,314
B2).
J.
M. Alexander (2015). “Enhancing
perception of frequency-lowered speech” (Patent No. US 9,173,041 B2).
Invited Talks
Alexander, J.M. (2021).
Invited keynote address at the annual convention of the Ordre des
audioprothésistes du Québec’s committee for clinical
training.
Alexander, J.M. (2021).
Speech Acoustics and Frequency Lowering. AudiologyOnline, Course #36922.
Alexander, J.M. (2021).
5-Hour Master Class: Frequency lowering. AudiologyOnline, Course #36359.
Alexander, J.M. (2020).
Reintroducing the high-frequency region to speech perception
research (Acoustical Society of America, Acoustics Virtually Everywhere).
Alexander, J. M. (2019).
Comparison of PHIG results with listening data and further
modification and optimization of peak-height insertion gain (ANSI S3/WG48
working group, Columbus, Ohio).
Alexander, J. M. (2019).
Frequency-lowering technologies to improve hearing. Indiana Clinical and Translational
Sciences Institute Retreat (West Lafayette, Indiana).
Alexander, J. M. (2018).
Wide dynamic range compression: The good, the bad, and the
ugly. Convention of the Kansas
Speech and Hearing Association (Wichita, Kansas).
Alexander, J. M. (2018).
Adaptive nonlinear frequency compression reveals mechanisms for
perception of frequency-lowered speech. Convention of the Kansas Speech and
Hearing Association (Wichita, Kansas).
Alexander, J. M. (2018).
Potential mechanisms for perception of frequency-lowered
speech. University of Iowa
Department of Communication Sciences and Disorders Professional Seminar
Series (Iowa City, Iowa).
Alexander, J.M. (2018).
Audiologic Evaluation of the Tympan Open Source Hearing Aid. Meeting of the Acoustical Society of
America (Minneapolis, Minnesota).
Alexander, J. M. (2017).
Enhancing perception of frequency-lowered speech. Palm Springs Hearing Seminar (Palm
Springs, California).
Alexander, J. M. (2017).
The trials and tribulations of using Frequency compression to
amplify speech. Palm Springs
Hearing Seminar (Palm Springs, California).
Alexander, J. M. (2017).
Nonlinear frequency compression - what’s in and out. Canadian Academy of Audiology
Conference (Ottawa, Canada).
Alexander, J. M. (2017).
Signia Expert Series: Nonlinear Frequency Compression for the Busy
Clinician. AudiologyOnline,
Course #29400.
Alexander, J. M. (2016).
Insights into nonlinear frequency compression, past, present, and
future. Sonova (Stäfa,
Switzerland).
Alexander, J. M. (2016).
What every audiologist needs to know about speech perception. 2016 Annual Signia Student
University (Piscataway, New Jersey).
Alexander, J. M. (2016).
The role of neuroscience in the rehabilitation of hearing loss with
hearing aids. Purdue Institute
for Integrative Neuroscience (West Lafayette, Indiana).
Alexander, J. M. (2016).
Development and implementation of a sequential sentence test
paradigm using revised PRESTO sentence lists. Speech Research Laboratory of David
Pisoni (Bloomington, Indiana).
Alexander, J. M. (2015).
The hearing aid fitting process for frequency lowering
amplification. Purdue
Crossroads Conference (West Lafayette, Indiana).
Alexander, J. M. (2015). The
trials and tribulations of amplifying speech for sensorineural hearing
loss. Starkey Audiology
Research Seminar Series.
Alexander, J. M. (2015).
Results on a method of frication translocation. Oticon (Copenhagen, Denmark).
Alexander, J. M. (2015).
Success or failure: The algorithm might be good, but not the
fitting. Seventh International
Forum for Hearing Instruments Developers (Oldenburg, Germany).
Alexander, J. M. (2015).
Information for perception of speech distorted by sensorineural
hearing loss. UC Berkeley
Department of Psychology, Invited Colloquium (Berkeley, California).
Alexander, J. M. (2015).
Frequency lowering techniques and results from the Purdue EAR
Lab. Starkey Hearing Research
Center (Berkeley, California).
Alexander, J. M. (2014).
Hearing aid solutions for the speech-in-noise problem. AudiologyOnline, Course #24917.
Alexander, J. M. (2014).
Everything you wanted to know about frequency lowering
amplification. Convention of
the Kansas Speech and Hearing Association (Kansas City, Kansas).
Alexander, J. M. (2014).
Clinical considerations for using frequency lowering
amplification. National Center
for Rehabilitative Auditory Research (NCRAR) Monthly Seminar Series
(Portland, Oregon).
Alexander, J. M. (2014).
Hearing aid solutions for the speech-in-noise problem. 3rd Annual Siemens Student
University (Piscataway, New Jersey).
Alexander, J. M. (2013).
Research in frequency lowering.
Oticon (Copenhagen, Denmark).
Alexander, J. M. (2013).
Individual variability in recognition of frequency-lowered
speech. AudiologyOnline, Course
#23437.
Alexander, J. M. (2013).
Clinical applications of frequency lowering. 2nd Annual Siemens Student
University (Piscataway, New Jersey).
Alexander, J. M., Hariram, V. (2013). Neural-scaled entropy as a model of
information for speech perception.
21st International Congress on Acoustics (Montreal, Canada).
Alexander, J. M. (2012).
Frequency lowering in hearing aids. Indiana Speech-Language-Hearing Association
Conference (Indianapolis, Indiana).
Alexander, J. M. (2011).
Selection and verification of frequency-lowering technology. Nebraska Speech-Language-Hearing
Association Conference (Kearney, Nebraska).
Alexander, J. M., Bentler, R. A. (2010). Update on frequency-lowering
techniques in hearing aids.
American Speech-Language-Hearing Association Conference
(Philadelphia, Pennsylvania).
Alexander, J. M. (2010).
The effects of nonlinear frequency compression on speech
information. Boys Town National
Research Hospital Colloquium (Omaha, Nebraska).
Alexander, J. M. (2010).
The effects of nonlinear frequency compression on speech
information. Hearing Aid
Laboratory of Ruth Bentler (Iowa City, Iowa).
Alexander, J. M. (2010).
Maximizing benefit from nonlinear frequency compression. 4th Phonak Virtual Audiology
Conference.
Alexander, J. M. (2010).
Considerations and techniques for frequency lowering in hearing
aids. GN ReSound-TRUE Research
Conference (St. Petersburg, Florida).
Alexander, J. M. (2009).
Current frequency lowering options in hearing aids. American Speech-Language-Hearing
Association Conference (New Orleans, Louisiana).
Alexander, J. M. (2009).
Candidacy, selection, and verification of SoundRecover options. 3rd Phonak Virtual Audiology
Conference.
Alexander, J. M. (2004).
A molecular analysis of complex tone discrimination by
normal-hearing and hearing-impaired listeners. University of Wisconsin Department
of Communicative Disorders Colloquium.
Alexander, J. M., Lutfi, R. A. (2004). Listening weights for signals and
maskers with uncertain frequency in normal-hearing and hearing-impaired
listeners. Special Session
honoring the work of Charles S. Watson at the Meeting of the Acoustical
Society of America (New York, New York).
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