I have a patient who wears CIC hearing aids. He works in a loud environment and needs to hear when someone is talking to him. He currently wears earmuffs, but can't wear his hearing aids since they feed back. Is there any type of earmuff with a noise cancellation system that might help this patient? Any other suggestions?
Noise cancellation headsets are not the solution to this problem. More often called ANR (for active noise reduction), these devices can provide benefits in isolated instances with substantial low-frequency noise present, but are only occasionally of value in typical occupational settings and provide no obvious benefits for the hearing aid wearer. For more on the applicability of ANR in occupational noise see http://www.aearo.com/pdf/hearingcons/anr.pdf
Options for such a user are to wear an active sound-transmission earmuff which via use of a mic and internal speaker acts like a generic hearing aid at low sound levels, but gradually shuts down as the ambient noise increases, limiting transmitted sounds to the equivalent of 82-85 dBA. Another option is to turn the gain down on the aids and wear them under earmuffs with as large a cup size as possible to reduce the feedback problems. For the CIC user the E-A-R Ultra9000 earmuff also my be of value due to its external orifice that communicates directly to the concha via an acoustical duct. http://www.e-a-r.com/e-a-r.com/muff_detail.cfm?prod_family=Muff 9000&ind_prod_num=330-3028001 Additionally in select situations one may also consider wearing the aids as hearing protectors (see EARLog 18 at http://www.e-a-r.com/hearingconservation/earlog_main.cfm).
Conducting sound field tests with simulations of the actual ambient noise levels in which the patient typically works is also helpful to validate whatever approach is decided upon.
Elliott H. Berger Senior Scientist, Auditory Research E-A-R / Aearo Company 7911 Zionsville Road Indianapolis, IN 46268-1657 317-692-3031 w 317-692-3116 f
Elliott H. Berger, MS, INCE Bd. Cert.
After receiving his M.S. in Acoustical Engineering from North Carolina State University, Elliott joined the Aearo Company in 1976. As E•A•R/Aearo's Senior Scientist, Auditory Research, he conducts hearing protector research and development. He has written over 60 articles on hearing protection/conservation, and was the principal editor for the 4th and 5th editions of the AIHA Noise & Hearing Conservation Manual. Elliott chairs ANSI working group S12/WG11 on real-world hearing protector performance, and is also involved with numerous other standards committees. In 1993 he was the recipient of the National Hearing Conservation Association's Outstanding Hearing Conservationist Award, and in both 1993 and 1998 received their Outstanding Lecture Award. Elliott is Past President of the National Hearing Conservation Association (NHCA), Past-Chair of the American Industrial Hygiene Association's (AIHA) Committee on Noise and a Fellow of the Association, a Board Member of the of the Council for Accreditation in Occupational Hearing Conservation (CAOHC), a Fellow of the Acoustical Society of America (ASA), and a member of the American Speech-Language-Hearing Association (ASHA).
Acceptable Noise Level (ANL): 2012 Update is a review of the recent literature and research findings pertaining to ANL. The following topics are reviewed within the article: 1) ANLs obtained at multiple speech presentation levels, 2) ANL as a predictor of hearing aid use, 3) effects of speech stimulus on ANL, 4) effects of hearing aid directionality and noise reduction on ANL, 5) ANL findings in cochlear implant users, 6) effects of high frequency filtering and reverberation on ANLs, 7) ANLs in children, 8) effects of music preference on ANL, and 9) ANL findings in individuals with hypercusis.
The purpose of this course is to provide introductory instruction on the Aurical Probe Microphone Measurement system. This course is designed to provide a basic tutorial for users of the device so they are able to verify their hearing aid fittings using validated fitting prescriptions in a short amount of time. This course will illustrate how to use the device to complete unaided, occluded, and aided measurements, as well as how to demonstrate the benefit of advanced hearing aid features.
The workshop is designed to prepare hearing healthcare specialists to embrace "services and process" marketing concepts; alternate hearing aid pricing strategies in a down economy; and to begin the challenge of understanding "relationship marketing" outside their four walls in order to increase their revenue and profitability. PLEASE NOTE: There is an updated presentation file available as an additional reference handout.
This article introduces a novel technique for frequency lowering. A description of three frequency lowering strategies is provided, as are data from a clinical trial validating the use of this new strategy.
Many patients who could use amplification choose not to. In this course, new data that uncovers the reasons for this reluctance will be presented. Further, the initial experiences of those who are fit for the first time may be different than what is expected by many audiologists. Changes in technology and fitting practices may offer patients benefits sooner than is traditional with a reduced level of side effects. These observations are important when considering techniques to motivate the reluctant patient to consider trial use of amplification. This seminar will examine potential changes in patient counseling to address the concerns and expected experiences of first time users.