Staff Member

Harvey Dillon

Harvey Dillon


Biographic Notes

Professor Dillon is a part-time Senior Research Scientist at the National Acoustic Laboratories.  His research interests at NAL focus on methods for assessing hearing needs, and the factors that affect the benefits that rehabilitation with hearing aids provide.

Previously, Professor Dillon carried out research into many aspects of hearing aids, measurement of hearing rehabilitation effectiveness, electrophysiological assessment, and the diagnosis and treatment of auditory processing disorders.  He was the Director of NAL from 2000 to 2017.

Professor Dillon is a part-time professor within audiology at Macquarie University (focused on auditory processing disorders) and a part-time professor of auditory science at the University of Manchester (focused on improving hearing rehabilitation methods).

He is the author of over 250 scientific publications and a widely used text book on hearing aids and is frequently invited to give keynote addresses at international conferences. He has been closely associated with the various NAL prescription rules, COSI outcomes evaluation, the trainable hearing aid, the LiSN-S test of spatial hearing loss, and the HEARLab clinical cortical response testing method.

Selected Publications

Bardy F, Sjahalam-King J, Van Dun B & Dillon H (2016). Cortical auditory evoked potentials (CAEPs) in response to multi-tone (MT) stimuli in hearing-impaired adult. J Am Acad Audiol, 27(5):406-415.

Bardy F, Van Dun B, Dillon H, Seeto M, Qin H, Loi T and Cowan R (2016). The Cortical Automatic Threshold Estimation (CATE) in adults: an audiogram with a single button press. The Hearing Journal, 69(6):32-37.

Cameron S, Glyde H, Dillon H and Whitfield J (2016). Investigating the interaction between dichotic deficits and cognitive abilities using the Dichotic Digits difference Test (DDdT). Journal of the American Academy of Audiology, 27(6):470-479.

Cameron S, Glyde H, Dillon H, Whitfield J and Seymour J (2016). The Dichotic Digits difference Test (DDdT): Development, normative data and retest reliability studies. Journal of the American Academy of Audiology, 27(6):458-469.

Dillon H (2016). Deficit-specific remediation for CAPD: Spatial processing disorder and other specific CAPD subtypes. Audiology Today, 28(4):58-59.

Dillon H, Beach EF, Seymour J, Carter L and Golding M (2016). Development of Telscreen: A telephone-based speech-in-noise hearing screening test with a novel masking noise and scoring procedure. International Journal of Audiology, 55(8):463-471. DOI:10.3109/14992027.2016.1172268.

Van Dun B, Kania A and Dillon H (2016). Cortical Auditory Evoked Potentials (CAEPs) in (un)aided normal-hearing and hearing-impaired adults. Seminars in Hearing, 37(1):9-24.

Bardy F, Van Dun B and Dillon H (2015). Bigger is better: Increasing cortical auditory response amplitude via stimulus spectral complexity. Ear and Hearing, 36(6):677-687.

Barry J, Tomlin D, Moore DR & Dillon H (2015). Use of questionnaire-based measures in the assessment of listening difficulties in school-aged children. Ear Hear, 36(6):e300-13.

Best V, Mejia J, Freeston K, van Hoesel RJ and Dillon H (2015). An evaluation of the performance of two binaural beamformers in complex and dynamic multitalker environments. International Journal of Audiology, 54(10):727-735.

Cameron S, Glyde H, Dillon H, King A and Gillies K (2015). Results from a national central auditory processing disorder service: A “real world” assessment of diagnostic practices and remediation for CAPD. Seminars in Hearing, 36:216-236

Gardner-Berry K, Purdy SC, Ching TYC and Dillon H (2015). The audiological journey and early outcomes of twelve infants with auditory neuropathy spectrum disorder from birth to 2 years of age. International Journal of Audiology, 54(8):524-535.

Glyde H, Buchholz JM, Nielsen L, Best V, Dillon H, Cameron S, Hickson L (2015). Effect of audibility on spatial release from speech-on-speech masking. Journal of the Acoustical Society of America, 138(5):3311-3319.

Mealings KT, Buchholz JM, Demuth K and Dillon H (2015). Investigating the acoustics of a sample of open plan and enclosed Kindergarten classrooms in Australia. Applied Acoustics, 100:95-105.

Mealings K, Demuth K, Buchholz J, Dillon H (2015). The development of the Mealings, Demuth, Dillon, and Buchholz Classroom Speech Perception Test (MDDB CSPT). J Speech Lang Hear Res, 58(4):1350-1362.

Mealings K, Demuth K, Buchholz J and Dillon H (2015). The effect of open plan versus enclosed classroom acoustics on speech perception in Kindergarten children. Journal of the Acoustical Society of America, 138(4):2458-2469.

Mealings KT, Dillon H, Buchholz JM and Demuth K (2015). An assessment of open plan and enclosed classroom listening environments for young children: Part 1 – Children’s questionnaires. Journal of Educational, Pediatric & (Re)Habilitative Audiology,21.

Mealings KT, Demuth K, Buchholz JM and Dillon H (2015). An assessment of open plan and enclosed classroom listening environments for young children: Part 2 – Teachers’ questionnaires. Journal of Educational, Pediatric & (Re)Habilitative Audiology, 21.

Mejia J, Nguyen C-V Yeend I, Loi T and Dillon H (2015). Bone-conduction hearing aids: Into the (near) future. The Hearing Journal, 68(8):30-34.

Tomlin D, Dillon H, Sharma M and Rance G (2015). The impact of auditory processing and cognitive abilities in children. Ear and Hearing, 36(5):527-542.

Van Dun B, Dillon H and Seeto M (2015). Estimating hearing thresholds in hearing-impaired adults through automatic detection of cortical auditory evoked potentials. J Am Acad Audiol, 26(4):370-383.

Bardy F, Dillon H and Van Dun B (2014). Least-squares deconvolution of evoked potentials and sequence optimization for multiple stimuli under low-jitter conditions. Clinical Neurophysiology, 125(4):727-737.

Bardy F, Van Dun B, Dillon H and Cowan R (2014). Least-squares (LS) deconvolution of a series of overlapping cortical auditory evoked potentials: a simulation and experimental study. Journal of Neural Engineering,11:046016 (14pp).

Bardy F, Van Dun B, Dillon H and McMahon C (2014). Deconvolution of overlapping cortical auditory evoked potentials recorded using short stimulus onset-asynchrony ranges. Clinical Neurophysiology, 125(4):814-826.

Cameron S, Dillon H, Glyde H, Kanthan S, Kania A. (2014). Prevalence and remediation of Spatial Processing Disorder (SPD) in Indigenous children in regional Australia. Int J Audiol, 53(5):326-335.

Cameron S, Glyde H and Dillon H (2014). Comparison of two working memory test paradigms: Correlation with academic performance in school-aged children. International Journal of School and Cognitive Psychology, 1(3):110.

Cameron S, Glyde H, Dillon H and Whitfield J (2014). Development and preliminary evaluation of a processing speed test for school-aged children utilizing auditory stimuli. International Journal of School and Cognitive Psychology, 1(3):116.

Convery E, Keidser G, Seeto M, Freeston K, Zhou D and Dillon H (2014). Identification of conductive hearing loss using air conduction tests alone: reliability and validity of an automatic test battery. Ear and Hearing, 35(1):e1-8.

Dillon H (2014). The top 15 most useful hearing aid features. Hearing HQ, Apr-Jul: 10-15.

Dillon H (2014). Objective cortical evaluation of infants wearing hearing aids. Audiology Today, Jul/Aug:33-34.

Dillon H, Cameron S, Tomlin D and Glyde H (2014). Comments on “Factors influencing tests of auditory processing: A perspective on current issues and relevant concerns” by Tony Cacace and Dennis McFarland. J Amer Acad Audiol, 25(7):699-702.

Eichenauer A, Dillon H, Clinch B and Loi T (2014). Effect of bone-conduction harmonic distortions on hearing thresholds. Journal of the Acoustical Society of America, 136(2):EL96.

Glyde H, Cameron S, Dillon H and Hickson L (2014). Remediation of spatial processing deficits in hearing-impaired children and adults. Journal of the American Academy of Audiology, 25(6):549-561.

Gyldenkærne P, Dillon H, Sharma M and Purdy S (2014). Attend to this: The relationship between auditory processing disorders and attention deficits. J Am Acad Audiol, 25(7):676-687.

Tomlin D, Dillon H and Kelly AS (2014). Allowing for asymmetric distributions when comparing auditory processing test percentage scores to normative data. J Amer Acad Audiol, 25(6):541-548.

Cameron S and Dillon H (2013). Remediation of spatial processing issues in CAPD. In G. D. Chermak & Frank E. Musiek (Eds.), Handbook of Central Auditory Processing Disorder. Comprehensive Intervention. Volume II (pp. 201-224). San Diego: Plural Publishing.

Dillon H and Cameron S (2013). Comment on: Moore DR, Rosen S, Bamiou D-E, Campbell NG and Sirimanna T. Evolving concepts of developmental auditory processing disorder (APD): A British Society of Audiology APD Special Interest Group ‘white paper’. International Journal of Audiology, 52(1): 9-10.

Glyde H, Cameron S, Dillon H, Hickson L and Seeto M (2013). The effects of hearing impairment and aging on spatial processing. Ear and Hearing, 34(1):15-28.

Glyde H, Buchholz J, Dillon H, Best V, Hickson L and Cameron S (2013). The effect of better-ear glimpsing on spatial release from masking. Journal of the Acoustical Society of America, 134(4):2937-2945.

Glyde H, Buchholz J, Dillon H, Cameron S and Hickson L (2013). The importance of interaural time differences and level differences in spatial release from masking. Journal of the Acoustical Society of America, 134(2): EL147-EL152.

Keidser G, Dillon H, Mejia J, Nguyen CV. (2013) An algorithm that administers adaptive speech-in-noise testing to a specified reliability at any point on the psychometric function. The International Journal of Audiology, 52:795-800.

Chang H, Dillon H, Carter L, Van Dun B and Young S-T (2012). The relationship between Cortical Auditory Evoked Potential (CAEP) detection and estimated audibility in infants with sensorineural hearing loss. International Journal of Audiology, 51(9):663-670.

Dillon H, Cameron S, Glyde H, Wilson W and Tomlin D (2012). An opinion on the assessment of people who may have an auditory processing disorder. J Amer Acad Audiol, 23(2):97-105.

Dillon H (2012). Hearing Aids, 2nd Boomerang Press, Sydney, 608 p. ISBN: 9780957816817.

Keidser G, Dillon H, Carter L and O’Brien A (2012). NAL-NL2 empirical adjustments. Trends in Amplification, 16(4), 211-223.

Van Dun B, Carter L and Dillon H (2012). Sensitivity of cortical auditory evoked potential (CAEP) detection for hearing impaired infants in response to short speech sounds. Audiology Research, 2e13:65-76.

Williams W, Seeto M and Dillon H (2012). The mechanical properties of earmuffs. Noise Control Eng J, 60(1):29-35.

Xi X, Ching TYC, Ji F, Zhao Y, Li J-N, Seymour J, Chen A-T, Hong M-D and Dillon H (2012). Development of a corpus of Mandarin sentences in babble noise with homogeneity optimized via psychometric evaluation (HOPE). International Journal of Audiology, 51(5):399-404.

Selected Presentations

Dillon H, Cameron S and Glyde H (2016). Deficit specific remediation for CAPD: Spatial processing disorder and other specific CAPD subtypes. Invited presentation, Academy Research Conference (ARC2016) – CAPD: Evaluation and Treatment! AudiologyNOW 2016, Phoenix, Arizona, 13-16 April.

Dillon H. Overview of auditory processing disorders. Invited talk, Paediatric Hearing Aid Audiology Masterclass, University of Greenwich, 30 April 2016. [via video link]

Dillon H. Invited presentations at the Asia Pacific Annual Conference, Dubai, UAE, 12-14 May 2016.
–  Trends in the hearing industry.
–  The ease of listening.

Dillon H. Invited presentations at the Nordic Audiological Society (NAS) Scientific Conference, Trondheim, Norway, 11-14 September 2016.
–  Central auditory processing disorders in children.
–  Superdirectional, bilateral beamformers in hearing aids.

Dillon H. Listening in Noise. Aram Glorig Award Lecture, 33rd World Congress of Audiology, Vancouver, Canada, 18-21 September 2016.

Dillon H. Binaural hearing and bilateral hearing aids. Keynote talk to Siemens Academic event, Tokyo, 14 February 2015.

Dillon H. Evaluating the amplification needs of hearing-impaired infants through evoked cortical responses. Invited talk, 2015 Siemens Expert Series webinar, 20 August 2015.

Dillon H, Mee C, Seymour J and Cuauhtemoc J. Sound Scouts: Testing hearing is child’s play. Invited presentation, International Collegium of Rehabilitative Audiology (ICRA) Biennial Conference, Berkeley CA, 7-10 October, 2015.

Dillon H. APD – It Exists! Differential Diagnosis & Remediation. ASHA Annual Convention, Denver, Colorado, November 12-14, 2015.

Dillon H. Invited presentations at AudiologyNow! 2014, Orlando, Florida, 26-29 March 2014.
–  Measurement of cortical responses in paediatric hearing rehabilitation.
–  Objective cortical evaluation of infants wearing hearing aids. [Academy Research Conference, 26 March 2014].

Dillon H. Auditory processing, mild loss, beamformers and more: Some issues affecting hearing aids of the future. Third International “Future of Hearing” Symposium of Cluster of Excellence “Hearing4all”, University of Oldenburg, Germany, 6 November 2014.

Dillon H. Commissioned Training Programme by Hong Kong Hospital Authority, Hong Kong, 1-2 February 2013.

Callier Prize Conference, The University of Texas at Dallas Callier Center for Communication Disorders, April 27, 2013.

Dillon H (2013). Trainable, self-fitting and super directional hearing aids. ACAud National Congress

Dillon H. Spatial processing disorder and its implications for hearing aid fitting. Keynote talk (by video link) to British Society of Hearing Aid Audiologists, Nottingham, May 2012.

Dillon H. Testing for central auditory processing disorders. Global Perspectives on Central Auditory Processing Disorders Conference during AudiologyNOW 2012, Boston, March 30-31, 2012.

Dillon H. Invited presentations at the Phonak Conference on Advances in Audiology: Tomorrow’s solutions for today’s challenges, Las Vegas, 2-5 December 2012.
–  Spatial processing disorder in adults with hearing loss
–  Spatial processing disorder in children with normal hearing sensitivity


Click here for a full list of NAL publications.