Steps for better business

Publications

2015-12

Improving Speech Recognition in Noise Using Binaural Beamforming in ITC and CIC Hearing Aids

Recent advances in full-audio binaural beamforming has allowed for this technology to become available in small custom products.  This paper reports on clinical trials revealing significant speech recognition improvement for this technology when employed in ITC and CIC custom instruments.

Matthias Froehlich, PhD, and Thomas A. Powers, PhD

Read the article on The Hearing Review

2015-10

SpeechFocus: 360° in 10 Questions

A Q&A about the new Siemens Spatial SpeechFocus, which directs amplification toward specific spatial regions for better speech understanding.

Veronika Littmann, PhD, Dirk Junius, PhD, and Eric Branda, AuD

Read the article on The Hearing Review

2015-10

New Wireless, Binaural Processing Reduces Problems Associated with Wind Noise in Hearing Aids

Through the use of wireless audio streaming between hearing aids, we have developed a binaural eWindscreen that has been shown to provide substantial benefit for this listening situation.  Research revealed that this algorithm substantially reduces the loudness of the wind noise, reduces annoyance, and makes speech in the presence of wind easier to understand.
Katja Freels, Dipl.Ing., Claudia Pischel, MSc, Cecil Wilson, MSc, Patricia (Tish) Ramirez, AuD
Read the article on AudiologyOnline

2015-09

Binaural Beamforming and Directionality: Siemens Technology Holds Clear Performance Advantage

Binaural beamforming using wireless audio transmissions has taken directional processing to a new level, and this technology is now available in a wide range of products, including CICs. This article shows how Siemens binaural beamforming products produce exceptionally high sDIs, and significantly outperform other products purporting to have this technology.

Marc Aubreville, Dipl.-Ing; Stefan Petrausch, PhD

Read the article on Canadian Audiologist

2015-08

DSL v5 in Connexx 7

This article will detail the approach proposed by the Desired Sensation Level(DSL) method as well as its implementation in the Connexx 7 software.

Mikael Menard, Ph.D., Philippe Lantin

2015-06

Improving Cell Phone Listening With Hearing Aids: A New Adaptive Streaming Volume Algorithm

This paper describes the new binax Adaptive Steaming Volume feature which automatically adapts the volume of the streamed phone call or music to be audible above fluctuating ambient noise.  Results from a clinical study evaluating this feature are presented.

Rosa-Linde Fischer, PhD, Dirk Mauler, PhD, Lisa Klop, AuD

Read the article on Audiologyonline.com

2015-06

Automatic Steering: The Director of the binax Soundtrack

This paper describes the automatic steering mechanism in binax hearing aids which analyzes the listening situation and automatically adjusts various hearing aid features to anticipate and accommodate wearer listening needs and preferences.  In more ambiguous listening situations where user needs may be atypical, binax Spatial Configurator allows wearers to override the automatic functionalities and take control of their hearing aids.

Gyorgy Varallyay, PhD, Sebastian Pape, Carol Meyers, AuD, FAAA

Read the article on Audiologyonline.com

2015-06

Measuring Directionality of Modern Hearing Aids

This paper describes a new method for quantifying directionality in modern hearing aids.  sAI-DI values resulting from this new measurement method for different binax hearing aid form factors (from RICs to single microphone CICs) are presented.

Stefan Petrausch Ph.D., Marc Aubreville Dipl.-Ing.

Read the article on Canadian Audiologist

2015-05

Speech Recognition Benefit Obtained from Binaural Beamforming Hearing Aids: Comparison to Omnidirectional and Individuals with Normal Hearing

This paper describes the clinical evaluation of the efficacy of a new hearing aid binaural beamforming algorithm called Narrow Directionality; specifically, comparing the aided speech recognition of individuals with hearing loss to that of omnidirectional processing, and a second group of participants with normal hearing.  Results showed that when Narrow Directionality was used by the hearing impaired participants, there also was a significant difference between groups at two study sites, with better speech recognition performance for the hearing impaired groups fitted with Narrow Directionality.

Matthias Froehlich, Ph.D., Katja Freels, Dipl.-Ing., & Thomas Power, Ph.D.

Read the article on Audiologyonline.com

2015-04

binax fit: How it’s simulated in Connexx, how to verify it, and how to match-to-target the easy way

Since the release of the Siemens micon platform and Connexx 7.0, Siemens has introduced a completely new fitting strategy which is also utilized in the latest binax platform. The core of the fitting algorithm is a new compression scheme which is different than traditional syllabic, slow-acting, or dual compression. The background of the earlier micon fit has been explained and discussed in two white papers (e.g., Fischer et al., [1] and Menard [2]). With this new fitting strategy, it is meaningful to discuss the use of real ear measurements (in-situ measurements), to verify the fitting in a patient’s ear. While there are numerous  manufacturers of probe-microphone equipment, this paper will focus on the Unity 2 measurement system and Unity 4 software.

Richard Schultz-Amling

2015-04

Tinnitus: the Siemens Package

It is known that the use of external sound(s) provide relief from tinnitus by inducing neurophysiologic functional changes in the different auditory pathways. The aim of sound therapy is to decrease prominence of the tinnitus and facilitate tinnitus habituation. To transform the individual’s reaction to tinnitus, counseling is required. To reduce the perception of tinnitus, sound enrichment is recommended to decrease the perception and induce habituation. Sound therapy features are available in Siemens hearing instruments and can support a wide variety of acknowledged tinnitus treatment programs. This paper describes the numerous therapy signals options available in the Siemens hearing instruments product line.

Gisele Munhoes Dos Santos, Ph.D. & Leanne Powers, Au.D.

Click here to read the related Hearing Review article

2015-03

Binaural beamforming in Insio binax custom instruments

The Siemens binax™ platform has led to incredible strides in the area of hearing aid directionality. A worlds’ first, Narrow Directionality in binax RIC instruments allowed hearing impaired wearers to understand speech significantly better in demanding listening situations, such as noisy cocktail-parties, even better than their normal hearing counterparts (Powers & Froehlich, 2014). With Insio™ binax custom hearing aids, we introduce yet another world’s first: automatic and adaptive directionality in single-microphone hearing instruments such as CICs.

Click here to read the related Hearing Review article

2014-11

Addressing Critical Hearing Aid User Needs with Binaural Features

This article reviews the features offered by binax, the new platform from Siemens, and describes how they are designed to address key wearer concerns and provide practical benefit for wearers in daily use.

Rebecca Herbig, Au.D.

See related article in British Society of Hearing Aid Audiologists, BSHAA People, Late Winter 2015 ed., p28

2014-11

Acoustic Wireless Control - connecting smart phones to hearing instruments

With the widespread use of smart phones, the benefit to transmit data directly from smart phones to hearing aids for control purposes has arisen. The touchControl App and binax hearing instruments enable this functionality for all binax hearing instruments from virtually all smart phones without the need for an intermediate relay, or wireless antennas in the hearing instrument. This paper describes the digital transmission system – Acoustic Wireless Control, which constitutes a direct link from a smart phone to the hearing instruments.

Gunter Sauer, Dipl.-Ing., Thomas Dickel, Dipl.-Ing., Thomas Lotter, Ph.D.

2014-10

Clinical Results with a New Wireless Binaural Directional Hearing System

binax Narrow Directionality has been clinically proven in two independent studies to help hearing impaired individuals understand speech better in cocktail-party-like situations than even their normal hearing counterparts.  This Hearing Review publication describes these studies more in detail.

Read the article on The Hearing Review

Thomas A. Powers, PhD, and Matthias Froehlich, PhD

2014-10

Improving Speech Intelligibility in Noise with Binaural Beamforming

The technology behind binax Narrow Directionality & Spatial SpeechFocus.

Homayoun Kamkar-Parsi, Ph.D., Dipl.-Ing. Eghart Fischer, Dipl.-Ing. Marc Aubreville

Also read the related article on The Hearing Review

2014-09

Directional Steering for Special Listening Situations: Benefit Supported by Research Evidence

The Siemens SpeechFocus algorithm has been available since 2010, and research with this product is starting to emerge in referred publications.  In this paper, we review three of these articles.

Eric Branda, AuD, Joel Beilin, MScEE, Thomas A. Powers, PhD

Read the article on AudiologyOnline

2014-09

e2e 3.0 – energy efficient inter-aural audio transmission

The Siemens e2e 3.0 enables a series of new true binaural signal processing algorithms by providing a bidirectional digital inter-aural audio link.

Thomas Lotter, Ph.D., Ulrich Schätzle, Dipl.-Ing., Thomas Fischer, Ph.D.

2014-09

Binaural Processing for Understanding Speech in Background Noise

How it works, why it doesn’t always work, and how we can make it better
with binaural beamforming algorithms

Joel Beilin, MScEE, Rebecca Herbig, Au.D.

2014-07

micon Compression and Connexx 7

The micon platform introduces an innovative adaptive compression scheme where the compression time behavior varies based on the speed of the fluctuations in the input signal. This paper describes its differences to traditional compression and how to adjust compression in Connexx 7.

Mikael Menard, Ph.D., Philippe Lantin

2014-06

Clinical Comparison of a Manufacturer’s Proprietary Fitting Algorithm to the NAL-NL2 Prescriptive Method

Read the article on Audiology Online

Thomas A. Powers, PhD, Eric Branda, AuD, Joel Beilin, MScEE

2014-02

Nitro micon: the Wisdom behind the Powerful Sound

This paper describes challenges faced by patients with severe to profound hearing impairment and hearing care professionals trying to fit hearing instruments to such hearing losses. The fitting and signal processing strategies of the new superpower Nitro micon instrument designed to target these challenges are explained and illustrated here, with examples from the Connexx 7 fitting software.

Maja Serman, Ph.D., Ulrich Giese, Ph.D., Claudia Pischel

2014-02

A Decade of Success: Siemens e2e Wireless Continues to Shape Industry Standards

Siemens e2e wireless was the first wireless system which allowed two hearing instruments in a bilateral fitting to exchange information and function harmoniously. Since then, e2e wireless has driven the hearing instrument industry. This paper describes a short history of e2e wireless, the new wireless advances in the Siemens micon platform, and the benefits provided.

Rebecca Herbig, Au.D., Roland Barthel, Dipl.-Ing

2013-07

GORE Acoustic Vents for Hearing Instruments

GORE® Acoustic Vents protect hearing instruments by providing an effective barrier against contaminants while minimizing transmission loss and attenuation. The vent is integrated into Siemens‘ new Aquaris™ waterproof hearing instrument series to preserve the microphone’s sound quality while protecting it from water, dirt, and dust particles.

2013-06

Robustness of Pure and Ace micon v2.0

This paper describes the design features of the Siemens Pure and Ace micon hearing instruments, which have been developed to enhance perspiration, water, dirt, and debris-resistance. Both products feature an effective protection from environmental effects via special sealing, and by encapsulation of the electronics.

In this version, we also describe the results of a field test conducted to validate the perspiration resistance of Pure and Ace micon in challenging real-life conditions.

Thomas Lotter, Ph.D.

2013-05

Insio: A new standard in custom instruments

Insio custom hearing instruments introduce novel features throughout the complete fitting process in order to obtain the best possible instruments: the best physical fit, together with the best audiologic performance, while maintaining an attractive and discreet cosmetic solution. This article describes the newly introduced features, their relevance for the various process steps, as well as the underlying rationales.

Matthias Froehlich, Ph.D.

2013-02

Robustness of Aquaris micon

This paper describes the unique and ultra-robust design of Aquaris micon. Aquaris micon is the only truly water- and dustproof hearing instrument in the industry rated IP 68.

2011-11

SpeechFocus - A new automatic directional microphone system for special listening situations

The new Siemens SpeechFocus, which includes a reverse directional polar pattern, was introduced to improve speech understanding for listening environments where speech may not originate from the front. Clinical trials at two independent research sites with this new technology compared SpeechFocus with two alternative microphone choices: omnidirectional and conventional frontal adaptive directional. The findings showed a significant benefit for SpeechFocus for understanding speech in background noise. This paper explains how SpeechFocus works, provides details about behavioral studies with Speech-Focus and shows how to fit and demonstrate SpeechFocus with Connexx 6.4.

Josef Chalupper, Yu-Hsiang Wu, Jennifer Weber

2011-11

Can hearing aids be truly waterproof or “just” water-resistant? …Yes, they can!

Moisture and electronics do not make good companions. With Aquaris, however, we have significantly improved the relationship between these two natural enemies. Based on the testing of internationally recognized certification laboratories, Aquaris has been shown to be not only water-resistant, but truly waterproof. The LGA IP testing resulted in a rating of IP57, which means that Aquaris is dustproof and waterproof. These findings relate directly to patient benefit and satisfaction. The IP testing (complete submersion) was considerably more rigorous that what would be expected in daily hearing aid use. Our field studies described in this paper confirm that even in use in extreme conditions of humidity over several months, no failures have been observed.

Josef Chalupper, Ph.D., Angela Flores, Au.D.

2011-11

Combining Phase Cancellation, Frequency Shifting and Acoustic Fingerprint for Improved Feedback Suppression

Acoustic feedback is one of the most negative aspects associated with hearing instruments. In many cases, the annoyance, frustrations and embarrassment caused by feedback may even outweigh an individual’s otherwise perceived benefit of amplification. Acoustic feedback also can indirectly reduce patient benefit with amplification. They may choose to use less-than-optimal gain to avoid the likelihood of feedback, only use the hearing aids for situations known to be “feedback free,” or in extreme cases, simply stop using the hearing instruments. Acoustic feedback even contributes to the “hearing aid effect,” as potential users of amplification view acoustic feedback as part of the negative stigma (Cox and Alexander, 2000).

Josef Chalupper, Thomas A. Powers, Andre Steinbuss

2010-11

SoundLearning 2.0: Approaching optimum gain, compression and frequency shape in different listening situations

This paper reports on a new Siemens learning algorithm which is designed to maximize patient listening comfort for a variety of listening situations without reducing the intelligibility and quality of speech.

Thomas A. Powers, Josef Chalupper

2010-11

Adaptive T-coil - Optimizing speech intelligibility & listening comfort for severe to profound hearing loss

The Adaptive T-coil in the new Siemens Nitro SP reduces the level fluctuations oftentimes associated with induction loop systems, thereby optimizing speech intelligibility and listening comfort. Study shows this feature to be most beneficial for patients with severe to profound hearing loss. Secondarily, the Adaptive T-coil could also be an alternative when a phone program is required for this population.

Rebecca Herbig, Au.D.

2010-11

SoundLearning 2.0 optimizes situation-specific gain and compression settings in real world

SoundLearning™ 2.0 featured in the new Pure 701, Life 701 and Motion 701 instruments improves listening performance by automatically adjusting acoustic parameters to an individual’s listening preferences for different environments. The results of this study demonstrate that for this group of subjects, SoundLearning™ 2.0 substantially increased gain for soft speech, thus resulting in improved speech intelligibility and listening satisfaction two weeks from the initial fitting. A smaller gain increase was observed for low level noise. SoundLearning™ 2.0 therefore considerably improves listening performance, thus optimizing the overall listening experience.

Dr. Josef Chalupper

2010-11

Online Hearing Screening using Logatomes in Fluctuating Noise

As older adults become more internet-savvy, there is an increasing demand for a quick and anonymous online hearing screening test to support the early detection and treatment of hearing loss. One primary challenge to an accurate online hearing screening, however, is the fact that the test design cannot control if the user calibrates the volume of the headphones or speakers appropriately. To overcome this limitation, an online hearing screening needs to assess the hearing threshold of the user without relying upon the user to calibrate the volume. The adaptive logatome hearing screening procedure described here determines the presence of hearing loss by measuring the speech reception threshold (SRT) of the user in fluctuating noise. Since it is well established that the SRT in fluctuating noise increases significantly for those with hearing loss, this information is compared against established norms to yield a screening test result. In this adaptive procedure, nine “a-consonant-a” logatomes are presented at various levels along with a fluctuating speech noise (“Fastl noise”) presented at a constant level. The test was first performed by normal hearing listeners to normalize the logatomes for equal intelligibility and to establish a baseline SRT. With those thresholds, a 4 minute screening test (per ear) was then performed by 20 individuals with confirmed hearing loss and 20 normal hearing individuals. Results show that this screening procedure has a sensitivity of 98% and a specificity of 95% when hearing loss is defined as having a PTA of more than 20 dB. Since the speech stimuli used are logatomes, this procedure can be adapted for use internationally. Preliminary data obtained with an internet implementation confirm the applicability of this logatome test as an online hearing screening test.

Vera Spitzlei; Theresa Geissler; Josef Chalupper, Ph.D; Martina Bellanova; Rebecca Herbig, Au.D.

2010-11

SpeechFocus improves speech intelligibility in special listening situations

Clinical trials at two independent research sites with the new SpeechFocus technology revealed a significant benefit for SpeechFocus for understanding speech in background noise. This microphone mode provided an average improvement of ~5 dB compared to omnidirectional and ~10 dB compared to frontal adaptive directional. As has been pointed out in many surveys of hearing aids users, overall satisfaction with hearing aids often is related to the number of listening situations in which patients report that the instruments provide benefit. With SpeechFocus, we believe we have just added one more listening situation where patients will now say that a significant improvement in speech understanding is present.

Dr. Josef Chalupper

2010-11

SpeechFocus – A new automatic directional microphone system for special listening situations

The new Siemens SpeechFocus, which includes a reverse directional polar pattern, was introduced to improve speech understanding for listening environments where speech may not originate from the front. Clinical trials at two independent research sites with this new technology compared SpeechFocus with two alternative microphone choices: omnidirectional and conventional frontal adaptive directional. The findings showed a significant benefit for SpeechFocus for understanding speech in background noise. This paper explains how SpeechFocus works, provides details about behavioral studies with Speech-Focus and shows how to fit and demonstrate SpeechFocus with Connexx 6.4.

Dr. Josef Chalupper, Yu-Hsiang Wu, Jennifer Weber

2010-11

miniTek, Tek Connect and e2e wireless 2.0 improve speech understanding for telephone listening

Coupling the telephone via the microphone to the hearing instrument results in poor speech intelligibility and thus, is usually not satisfactory for listeners with moderate and severe hearing loss. Routing the telephone via e2e wireless 2.0 (e.g. with miniTek or Tek Connect) directly into both hearing instruments significantly improves speech intelligibility, and therefore helps to overcome one of the biggest issues of hearing instrument wearers – conversation on the telephone.

Dr. Josef Chalupper

2010-11

FeedbackStopper provides highest feedback-free real-ear gain in the industry

In summary, independent research compared the premier product from six different manufacturers, and assessed the real-ear effectiveness of the feedback reduction algorithm when the hearing aids were used in real-world condition. The results showed large variability among the different products, with the Siemens Pure 701 showing superior performance. The effectiveness of the feedback algorithm can impact significantly on the audibility provided by the instrument, which ultimately influences hearing aid benefit and satisfaction.

Dr. Josef Chalupper

2009-11

How to Use the Real Time Display

The Real Time Display is a new counseling tool in Connexx 6.3 designed to help hearing care professionals explain key hearing instrument features. This paper explains how to take advantage of the Real Time Display during patient consultations, including some applicable use cases.

Rebecca Herbig, Au.D.

2009-11

Acceptable delay in digital hearing aids

The processing delay in digital hearing aids has the potential to interfere with the amplified sound quality of speech. Tolerable delay values are well established, and this issue is thoroughly studied when hearing aid processing is designed. Siemens products are designed so that effective signal processing is maximized while all delays still fall at or below research recommended values.

Rebecca Herbig, Au.D.

2009-11

ConnexxFit & Open Optimizer

Connexx 6.3 features two major features to improve open fittings. The new ConnexxFit provides outstanding spontaneous acceptance for moderately sloping hearing losses with all open fit products. The Open Optimizer – currently available for Pure only – is further reducing the risk of feedback for open fittings, and allows for 4 dB more gain without feedback in real world conditions.

Sepp Chalupper, PhD

2009-11

ClinicalFit in Connexx 6: Reference for pediatric audiologists

ClinicalFit is a fitting workflow in Connexx 6 which was especially developed for pediatric hearing aid fittings. It is intended to support the clinical work of pediatric audiologists and acousticians to ensure a safe and efficient fitting process. ClinicalFit offers several options to select different measurement methods and units. It supports direct RECD and verification measurements via Unity, as well as manual insertion of individual data. Statistical, age-related corrections are also available. Thanks to these features, ClinicalFit helps to make the most of all available audiological data to ensure an optimal fitting for every child.

Vera Spitzlei

2009-11

How To Use AutoFit

AutoFit is a new option within the Connexx in-situ feature which automatically adjusts the frequency response of a hearing instrument to match prescriptive gain targets. This paper describes how to perform quick match-to-target fittings using AutoFit.

Rebecca Herbig, Au.D.

2008-11

SoundSmoothing: A new algorithm to reduce the annoyance of noise

SoundSmoothing™ is a new component of the Siemens “Speech and noise management system.” It is the first algorithm to be able to reduce the annoyance of transient noises. The necessity for such a new technique is shown and its technical functionality is explained in detail. SoundSmoothing was evaluated in three independent studies – both in laboratory conditions and in everyday life. The results of these studies clearly prove the benefit of SoundSmoothing for hearing-impaired listeners. SoundSmoothing greatly minimizes the annoyance of transient noises for hearing instrument wearers. Moreover, fitting guidelines for this new technology are given and the use of the options as offered by the fitting software for fine tuning is explained. The new CENTRA products are the first hearing instruments to be equipped with SoundSmoothing.

Siemens Audiologische Technik GmbH

2008-11

A rechargeable battery system for hearing instruments

Patient and dispenser surveys show that there is a demand for a rechargeable solution in hearing instrument technology. The major requirements for a rechargeable solution are long-lasting batteries, usage also with standard hearing aid batteries and easy and effortless recharging. Thanks to the recent introduction of nickel metal hydride (NiMH) technology it now is possible to fulfill these requirements. NiMH batteries are ecofriendly, do not have a “memory effect” and can be recharged in a few hours over night. Under realistic conditions, a 13 size battery is required to guarantee at least one full day of operation. The Siemens CENTRA Active charger provides optimum ease of use as two hearing instruments can be recharged at the same time. The charger recognizes errors like dysfunctional rechargeable batteries, non-rechargeable batteries and wrong polarity. In addition, the instruments are automatically switched off when placed in the charger.

Siemens Audiologische Technik GmbH

2008-11

e2e wireless™ - Evidence of benefit for bilateral fittings

The e2e wireless™ technology facilitates genuine bilateral fittings. Recent research on e2e wireless proves its positive effects on ease-of-use, speech intelligibility and localization. In addition, e2e wireless diminishes the “Stigma” effect by assuring maximum discretion through smaller housings and less manual adjustments. Binaural synchronization is an essential technological prerequisite for new and improved hearing instrument features like the Learning Volume Control, sophisticated DNR algorithms, state-of-theart microphone technology or an intelligent classification system. Thus, e2e wireless should be used regularly for bilateral fittings.

Siemens Audiologische Technik GmbH

2008-11

DataLearning & Learning VC: Learning preferred gain settings in everyday life

Appropriate gain and output settings are crucial for every hearing instrument fitting. While prescriptive formulas provide a vaild starting point for every fitting and the acclimatization process, they are lacking in individual preciseness. Moreover, preferred gain in real world listening situations cannot be determined in a clinical setting. These shortcomings result in patient complaints about inappropriate loudness settings. An effective implementation to address this issue has just been introduced by Siemens in CENTRA™ with the Learning Volume Control (LVC) feature. With CENTRA, Siemens has developed the first hearing instruments whose volume setting can be trained by the wearer (or, alternately, the wearer preferences are learned by the hearing instruments) – automatically and in real time. This is a completely new approach for determining the optimal hearing instrument gain as it accounts for individual differences and everyday listening situations. Results of clinical studies show that only coupled (e.g. with e2e wireless™) hearing instruments achieve an optimal and balanced volume setting for each program. Moreover, the fitting options for the LVC are explained and general fitting guidelines for this new technology are given.

Siemens Audiologische Technik GmbH

2008-11

How to select the optimum BTE fitting option

A growing challenge for hearing care professionals is the increasing number of choices and decisions to face when determining how to address the amplification portion of auditory rehabilitation. In particular, for open canal behind-the-ear (BTE) fittings, there are many new choices available. This paper, therefore, will focus primarily on choices involving BTE hearing instruments, with a special emphasis on open canal fittings. We will review many of the traditional reasons for using BTEs and further examine the different technologies and fitting options (i.e. earhooks, tubing and means of coupling to the ear canal). Regarding open canal fittings, the major aspects are understanding maximum insertion gain, occlusion effects and maximum stable gain. It is important to understand how these three factors inter-relate in obtaining the optimum fitting for an individual patient. Prepared with this information, one can incorporate a structured approach to the open canal BTE selection and address individual needs to maximize patient satisfaction.

Siemens Audiologische Technik GmbH

2008-11

AquaProtec™ - Three innovative features to protect against moisture

Hearing instruments designed to meet the demands of today’s hearing instrument wearers have to provide both advanced signal processing schemes to compensate for hearing loss and innovative solutions to guarantee reliability in daily activities such as outdoor sports. AquaProtect™ consists of a clip-on microphone cover, nanocoating and C-Guard™, all of which perform unique functions to protect the hearing instrument from moisture and other environmental factors. The design rationale and the technical background of these innovations are explained in detail. The patient benefits of AquaProtect have been proven by technical and behavioral studies, showing that AquaProtect is especially beneficial for the active hearing instrument wearer.

Siemens Audiologische Technik GmbH

2008-11

Optimizing gain, frequency shape and compression in everyday life

To address the inability of traditional fitting formulae to accommodate individual preferences in hearing aid settings, learning technology allows users to fine tune their instruments to achieve optimal satisfaction. SoundLearning, the second generation of learning technology from Siemens, allows the user to train not only gain, but also compression characteristics and frequency shape. Like its predecessor DataLearning, SoundLearning functions transparently in the background based on simple adjustments of the volume control made by the users as they go about their daily life. To accomplish this, the spectral content of the input signal and the corresponding volume control setting is continuously sampled and analyzed in order to approximate the user’s preferences for compression and frequency shape. The SoundBalance adjustments on Tek Connect remote control device further contribute to frequency shape learning. Studies have shown that users are able to increase general satisfaction with their hearing aids after training without compromising speech intelligibility. This paper reviews the theoretic and practical advantages of a trainable hearing aid using Sound-Learning. The fitting options for SoundLearning are summarized and general fitting guidelines for this new technology are provided.

Siemens Audiologische Technik GmbH