Ranking Hearing Aid Input--Output Functions for Understanding Low-, Conversational-, and High-Level Speech in Multitalker Babble

King Chung; Killion, Mead C.; Christensen, Laurel A.
April 2007
Journal of Speech, Language & Hearing Research;Apr2007, Vol. 50 Issue 2, p304
Academic Journal
Purpose: To determine the rankings of 6 input-output functions for understanding low-level, conversational, and high-level speech in multitalker babble without manipulating volume control for listeners with normal hearing, flat sensorineural hearing loss, and mildly sloping sensorineural hearing loss. Method: Peak clipping, compression limiting, and 4 wide dynamic range compression (WDRC) input-output functions were compared in a repeated-measure design. Interactions among the compression characteristics were minimized. Speech and babble were processed and recorded at 3 input levels: 45, 65, and 90 dB sound pressure level. Speech recognition of 3 groups of listeners (n = 6/group) was tested for speech processed by each input-output function and at each input level. Results: Input-output functions that made low-level speech audible and high-level speech less distorted by avoiding peak clipping or severe compression yielded higher speech recognition scores. These results are consistent with previous findings in the literature. Conclusion: WDRCs with the low compression ratio region extended to a high input level or with a high compression limiting threshold were the best for speech recognition in babble when the hearing aid user cannot or does not want to manipulate the volume control. Future studies on subjective preferences of different input-output functions are needed.


Related Articles

  • Is There a Hearing Aid for the Thinking Person? Hafter, Ervin R. // Journal of the American Academy of Audiology;Oct2010, Vol. 21 Issue 9, p594 

    Background: The history of auditory prosthesis has generally concentrated on bottom-up processing, that is, on audibility. However, a growing interest in top-down processing has focused on correlations between success with a hearing aid and such higher order processing as the patient's...

  • Optimizing FM Systems. Huong Nguyen; Bentler, Ruth // ASHA Leader;10/11/2011, Vol. 16 Issue 12, p5 

    The article focuses on the optimization of frequency modulation (FM) system advantages for people with speech, language, or hearing disability, by verifying and following up device function. It mentions the FM optimization guidelines recommending 10 decibels (dB) of higher FM-microphone inputs...

  • Quantifying the Effect of Compression Hearing Aid Release Time on Speech Acoustics and Intelligibility. Jenstad, Lorienne M.; Souza, Pamela E. // Journal of Speech, Language & Hearing Research;Jun2005, Vol. 48 Issue 3, p651 

    Compression hearing aids have the inherent, and often adjustable, feature of release time from compression. Research to date does not provide a consensus on how to choose or set release time. The current study had 2 purposes: (a) a comprehensive evaluation of the acoustic effects of release time...

  • They Say "I Can't Hear in Noise," We Say "Say the Word Base". Tecca, John E. // Audiology Today;Nov/Dec2015, Vol. 27 Issue 6, p10 

    No abstract available.

  • LETTER TO THE EDITOR. Lindley, George // Audiology Today;Nov/Dec2015, Vol. 27 Issue 6, p13 

    No abstract available.

  • Hearing Aid Satisfaction: What Does Research from the Past 20 Years Say? Wong, Lena L. N.; Hickson, Louise; McPherson, Bradley // Trends in Amplification;2003, Vol. 7 Issue 4, p117 

    Hearing aid satisfaction is a pleasurable emotional experience as an outcome of an evaluation of performance. Many tools have been designed to measure the degree of satisfaction overall, or along the dimensions of cost, appearance, acoustic benefit, comfort, and service. Various studies have...

  • Do Experienced Hearing Aid Users Know How to Use Their Hearing Aids Correctly? Desjardins, Jamie L.; Doherty, Karen A. // American Journal of Audiology;Jun2009, Vol. 18 Issue 1, p69 

    Purpose: To assess experienced hearing aid users' ability to use their hearing aids correctly. Method: In this study, we developed the Practical Hearing Aid Skills Test (PHAST) to objectively test a hearing aid user's ability to manipulate his or her hearing aids. The PHAST requires hearing aid...

  • From the Editors. Chung, King; Ricketts, Todd A. // Trends in Amplification;2003, Vol. 7 Issue 4, preceding p117 

    Introduces the article about hearing aid satisfaction in the December 2003 issue of the "Trends in Amplification". Effectiveness of measurement tools and the timing of administering the hearing aid satisfaction measurements; Information about the authors.

  • Comparison of Performance with Wide Dynamic Range Compression and Linear Amplification. Kam, Anna C.S.; Kam, Anna C. S.; Wong, Lena L. N.; Wong, Lena L.N. // Journal of the American Academy of Audiology;Sep1999, Vol. 10 Issue 9, p445 

    This study compared subject performance and preference using a compression-limiting hearing aid set to linear amplification (program 1) and wide dynamic range compression (WDRC, program 2). The frequency responses of the hearing aid were matched to a 65 dB SPL signal and maximum output to a...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics