Pairing iOS Devices with ReSound LiNX Hearing Aids

mandi-chamblessBy Mandi Chambless

Over the past few weeks I have assisted with many a pairing of ReSound LiNX hearing aids to smart devices. It has been amazing to hear the excitement from the patients when they begin streaming to their hearing aids! This pairing process is simple but there are a few key steps to follow to ensure the preservation of a solid connection between your patient’s ReSound LiNX hearing aids and smart device.

Pairing of your patient’s ReSound LiNX hearing aids and smart device is completed outside of the Aventa 3.6 software. Before starting the pairing process, complete your fitting and any fine-tuning adjustments of the hearing aids then save the settings to the ReSound LiNX hearing aids and exit Aventa 3.6.

Pairing the hearing aids to a supported Apple device

1. Turn on Bluetooth functionality on the Apple device if it is not already on.

2. Go to the Settings > General menu. Then select Accessibility in the General menu.

newsletter13. Power up ReSound LiNX hearing instruments by closing the battery doors.

ReSound LiNXHIPairLNBlack4. Select Hearing Aids in the Accessibility menu on the Apple device.newsletter2
5. Once you enter the Hearing Aids screen, you will see the name of your hearing instruments appear along with the ReSound brand name and model number.

newsletter36. Tap on the center of the name of your hearing instruments on the screen.

7. Pairing requests will now appear asking if you would like to pair to your iPhone®, iPad®, or iPod touch®. Press “Pair” to begin the pairing process to your ReSound LiNX hearing instruments. Note that for pairing to two hearing instruments, there will be two separate pairing requests.

newsletter48. Your iPhone, iPad, or iPod touch will now pair to the ReSound LiNX hearing instruments and automatically connect to them.


Key note: This first time pairing includes an MFi authentication process. WHILE THIS PROCESS OF AUTHENTICATION IS OCCURRING, DO NOT START ANY STREAMING TO RESOUND LINX AFTER PRESSING THE PAIRING REQUESTS. You can verify this process is completed in one of two ways. :

  • Place the hearing instrument on your ears while the process is occurring. Once completed, you will hear a series of 6 been tones followed shortly by a ripple tone.
  • Wait for more than 60 seconds to be certain that the process has completed.

Your iPhone, iPad, or iPod touch will now detect the Resound LiNX hearing instruments you paired and automatically connect to them. The ReSound LiNX hearing aids are now ready to stream from the Apple device.

A few key things I found helpful:

  • I like to turn off Bluetooth and turn it back on before beginning the connection process
  • The authentication process may take up to 90 seconds. An interruption of the authentication process can result in intermittency of the connection as well as poor sound quality of streaming so it is very important to not begin streaming to the hearing aids until the indicator tones and trill have been heard in both hearing aids.
  • Remember that when your patient returns for adjustments, select ‘Instrument’ and ‘Read’ in the Aventa 3.6 software before making any adjustments to the hearing aids. See my TeleAssist Tip in last month’s issue for more information.




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A NAL NL2 and Audiogram+ Showdown!

erica-koehlerBy Erica Koehler, Au.D.

Each hearing instrument manufacturer implements a proprietary fitting rationale as the “first fit”; the philosophy and logic behind each can vary greatly leaving the end user with very different gain settings depending on which brand they are fit with. Should the fitter decide to avoid these proprietary formulas and choose a generic prescription, such as NAL, DSL or CAMFIT, they are still faced with a wide range of fitting targets. Keidser, Brew and Peck (2003) found when comparing two widely used generic targets to four proprietary, that target gain setting could differ up to 10dB for the same audiogram. So how does ReSound’s Audiogram+ compare to a standard target like NAL or DSL?

Let’s have a look at the literature first. Studies have found that listeners tend to prefer the NAL (NL1 or RP) or NAL-like propriety prescriptions when compared to others that generally provided more gain (Abrams et al, 2012, Mueller, 2005, Stelmachowitz et al, 1998). As suggested by Killion’s 2004 article, proprietary formulas often prescribe less gain than standard methods. Audiogram+ has shown to be very close to the widely used NAL NL1 standard method (Keidser, 2003) and is based on similar rationale. NAL NL1 and 2 use the same rationale of flattening, or normalizing, loudness and maximizing predicted speech intelligibility. Changes made to NAL NL1 were based on the more recent Moore and Glasberg (2004) loudness model and behavioral data of compression ratios and gain preferences (Johnson & Dillon, 2011). This Johnson and Dillon study found that NAL NL2 typically prescribes less insertion gain than its predecessor, which in theory would more closely match the targets of Audiogram+, according to the Keidser study. Audiogram+ is also based on the concept of loudness normalization and is designed around the ReSound compression system. The Audiogram+ white paper states that according to Smeds (2006) and Keidser & Grant (2003), hearing instrument users tend to prefer less gain than a loudness normalization rationale would prescribe. The analysis of fittings based on individual loudness scaling procedures that led to the development of Audiogram+ revealed similar findings. For this reason, Audiogram+ prescribes less gain than a strict loudness normalization rationale would indicate.

Based on the literature we have learned two things. First, listeners tend to prefer rationales that prescribe less gain at a first fitting, such as NAL NL2 and Audiogram+. Second, NAL NL2 and Audiogram+ are based on a similar philosophy but are still fundamentally different. The two have been compared in an objective manner by looking at the targets generated by each. But no subjective evaluation has been carried out. A study was conducted at an off-site research facility to do just that.

The main focus of the trial was to determine if participants preferred to have their hearing instruments fit with targets generated by NAL NL2 or Audiogram+. The amount of fine-tuning required was also investigated based on the fact that when a hearing instrument’s initial fit is close to satisfactory gains, a secondary benefit occurs. Less fine-tuning! Twenty new users were fit with Audiogram+ and NAL NL2, spending two weeks in each. They were then asked to complete a series of questionnaires recording their preference of condition one or two in different domains. Results found equal number of participants preferred Audiogram+ as NAL NL2 when fit to target, however there was increased preference for Audiogram+ after fine-tuning, particularly in noise.

For those that requested fine-tuning, the adjustments were very similar for the two rationales. In six cases the participant did not request fine-tuning, and four of these instances were with an Audiogram+ fitting. This suggests, that when compared with NAL NL2, Audiogram+ may be a better starting point as a “first fit.” Similar fine-tuning from target resulted in a greater number of subjects selecting Audiogram+ as the preferred condition.

Now back to the original question – how does ReSound’s Audiogram+ compare to a standard target like NAL or DSL? The answer seems to be that it compares quite favorably, providing a combination of audibility and comfort, at least for new users. Of course it’s impossible to fit every patient without spending time fine-tuning but when compared to NAL NL2, Audiogram+ resulted in more satisfied listeners with less fine-tuning.

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Tech Tip | Utilizing the Synchronized Acceptance Manager with ReSound LiNX Hearing Instruments in Aventa 3.6

Aventa 3.6 allows users to utilize the Acceptance Manger, a feature that provides changes in gain settings, over a period of time and amount of usage, as determined by the hearing healthcare specialist. This is supported in both the ReSound LiNX 9 and ReSound LiNX 7 hearing instruments. In this month’s Tech Tip, we walk you through how to access and select Acceptance Manager options.

Launch Aventa 3.6
Connect ReSound LiNX Hearing Instruments.

Navigate to the Fit Screen
Select, ‘Acceptance Manager,’ from the left navigation menu.

Make Desired Acceptance Manger selections.
Feature Descriptions

  • Duration
    • From 1 week to 6 months of duration.
  • Average Daily Use
    • From 2 hours to 16 hours usage per day.
  • Preserve Fine-Tuned Gain
    • If checked, will calculate fine-tuning changes made to the current gain settings, into the end point target curves.
  • Synchronize Progress During Use Time
    • Allows the instruments to adapt at the same progress so that they end at the same point.

Visible Starting and Ending Points
Once the Acceptance Manager has been initiated, visible starting (A) and stopping (B) points will be seen in Aventa 3.6. Make any further pertinent programming adjustments, and select, ‘Save.

Follow Up Visits
During follow up visits, once connected in Aventa 3.6, the Adaptation Manager will indicate that adaption is in progress and show an estimation of time remaining, until completion.


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This is Your Brain. This is Your Brain on Sound.

Remember back in the ‘90s when people thought that listening to Mozart while studying would help with test performance? While some studies have disproved this theory, listening to music is still considered to be effective in recalling memories. In fact, music therapy can help Alzheimer’s patients recall memories and even restore cognitive function.

When you listen to music you’re familiar with, it stimulates the hippocampus, which handles long-term storage in the brain. It can help you remember what you were doing or where you were when you were listening to that song. So it’s really not much of a stretch to use music as a strategy to help you remember something.



Beyond the cognitive benefits of music therapy, think about how sounds in general affect your mood. The sound of a police or ambulance siren often incites a negative feeling, while the pitter patter of rain drops on the roof can be soothing and relaxing.

In 2012, the Drayton Manor Theme Park in the United Kingdom commissioned a survey of their nation’s favorite – and least favorite – sounds. The Daily Telegraph reported the results:


  1. Waves against rocks
  2. Rain against the windows
  3. Treading on snow
  4. Baby laughing
  5. Birds chirping
  6. Crackling open fire
  7. People laughing
  8. Leaves crunching beneath your feet
  9. Cat purring
  10. Church bells in the distance


  1. Nails on a chalk board
  2. Someone being sick
  3. Car alarm
  4. A dentist’s drill
  5. Someone spitting
  6. A yapping dog
  7. Screaming baby/children
  8. Someone talking with their mouth full
  9. Someone grinding their teeth
  10. Someone’s knife grinding on a plate

What are your favorite sounds?

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Patient Profile | ReSound LiNX Helps Patient Keep His Job

At a recent ReSound training in New Orleans, Steve Brown, an audiologist at Ears 4 Hearing in Southeast Missouri, asked our Chief Audiology Officer, Laurel Christensen, some advice on a patient he was treating.

Patient profile:

  • 61-year old male
  • Long-term severe hearing loss
  • Surgical equipment specialist
  • Wearing RIC hearing aids from another manufacturer

The patient was struggling to keep his job because of the extent of his hearing loss. He had recently been assigned a particularly difficult neurosurgeon to support. and while the neurosurgeon was pleased with the new specialist’s work, he was irritated that he had to keep repeating himself.

Dr. Brown discussed the patient’s working environment with Dr. Christensen.

  • He was required to stand at a monitor approximately 15 feet behind the surgeon
  • Not only was the surgeon’s back to the patient, but he was also wearing a surgical mask and typically looking down
  • There was a lot of noise in the room from surgical equipment, suction machines and conversation
  • The patient was expected to hear and respond to every comment made by the surgeon – who was easily irritated by having to repeat himself
  • The surgeon told him that his job was in jeopardy if he could not improve his hearing

ReSound LiNXHIPairLNBlackDr. Brown tried several adjustments on the patient’s existing hearing aids. He also suggested the use of a remote microphone which was unsuccessful due to poor sound quality and poor placement options. He finally convinced the patient to try ReSound LiNXTM and discussed the case with Dr. Christensen while in New Orleans prior to the fitting.

Dr. Brown fit the patient with LiNX 961’s and gave him a ReSound UniteTM Mini Microphone. At Dr. Christensen’s recommendation, the Mini-Mic was to be worn by a surgical nurse standing across from the surgeon during procedures since asking the surgeon to wear a mic was out of the question.Mini Microphone

After a week of wearing the LiNX, the patient was seen for follow-up and returned the Mini-Mic. His report: “[I’m] hearing so well in surgery with these ReSound hearing aids I don’t need the extra mic.”

With ReSound LiNX there is no reason why hearing loss should get in the way of any aspect of your life!

Do you have a story about how ReSound LiNX has helped you?


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One Year Later | The Boston Bombing Injury You Didn’t See



One week from today, 36,000 people will run the 118th Boston Marathon, the world’s oldest annual marathon. Just one year ago, this iconic event was torn apart by a horrific bombing at the finish line. As we approach the anniversary, we remember those affected by the terrible events of April 15th, 2014 and examine the acoustic trauma experienced by many who were near the blast.

That evening, the emergency department at Massachusetts Eye and Ear Infirmary was full. Patients who were cleared of other major medical trauma next door at Massachusetts General Hospital arrived to be evaluated for ear pain, hearing loss and other head and neck injuries. According to an article in the Hearing Journal, “most patients had hearing loss, tinnitus, and mild disequilibrium. On exam, they had tympanic membrane perforations, large and small. Pieces of metallic shrapnel were identified and carefully removed from patients’ faces, necks, and arms. Audiograms revealed both conductive and sensorineural hearing loss, often worse in the ear facing the blast. Careful eversion of perforated drum edges was performed, and selected patients with sensorineural hearing loss were treated with oral steroids.”

In the following weeks, treatment recommendations were made based on experience with traumatic perforations from other causes, clinical and scientific literature on noise-induced hearing loss, and recommendations from military literature and military colleagues. However, this experience led them to acknowledge that there is a lot we don’t know about blast-related ear injury. Since the bombing, they have been conducting research into the consequences of acoustic trauma. Results have not yet been published, but we hope that it will lead to better treatment of these types of injuries.

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Does Apple Make Hearing Aids Cool? We Think So.

Fresh appleWe all know about the stigma associated with wearing hearing aids and how long it takes for the average person with hearing loss to accept they need help. With the aging baby boomer population increasingly suffering from hearing loss (and ignoring it), perhaps the high tech, “cool” factor of Made-for-iPhone® hearing aids will finally change those age-old perceptions.

Julio O’Jeda of the St. Paul Pioneer Press certainly thinks so. In his recent article, “Bluetooth hearing aids could take off with baby boomers”, he mentions the association of hearing aids with the Apple brand as a potential motivator for adoption. And that’s what hearing aids need.  They should be viewed as personal enhancement devices, rather than a “treatment” for an age-related health problem. Besides, we all know that hearing loss can occur at any age for a multitude of reasons.

According to an article on, Made-for-iPhone hearing technology has come at the right time.  “Everybody’s walking around with more computer power than they need in their smartphones,” said Thomas Gunderson, a senior health care analyst. “We’ve got a market where 10,000 Baby Boomers are turning 65 every day. We finally have cracked the battery problem. I think it all comes together, and it makes sense that Apple is a leader here.”

What do you think? Will people be more open to using hearing aids now that they can work with a cool new app?


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