What Does a Cochlear Implant Sound Like?


It has been almost 7 years since I received my Cochlear Implant.  However, it seems just like yesterday.  I can still remember every detail from the time of surgery, to my first activation, and all the steps along the way to the restoration of my hearing.

I was not always deaf.  I was born with normal hearing.  I did not have meningitis, nor do I have any family history of hearing loss.  The only thing notable thing in my clinical history was that I had a series of painful ear infections.  It is likely one of those infections that caused the damage to my inner ear.

I began using hearing aids at the age of 5.  Over time, my hearing continued to worsen.  By the time I was in high school, my hearing loss was moderate-severe.  In University, my loss was in the severe range.  Interestingly, I did not begin using an FM system until my third year of University.  I simply did not know such devices even existed. I wish I was made aware of FM systems earlier, as I suffered academically from not hearing well.  In high school with smaller class sizes, I was an Honour Role student.  But in first year University, my average dropped to 60% and my initial hopes for studying Medicine were dashed.

I vowed to ensure that all people with hearing loss become fully informed of all the hearing devices or other forms of help that are available.  I did not want to see others struggle needlessly from hearing loss.  Thus, I decided to pursue studying Audiology and make this my personal mission.

But back to my original story about my CI.  Even though my loss was now in the severe range, hearing aids and FM systems provided me with considerable assistance.  My word identification scores were still in the 70% range.  However, as I crossed the line into a profound loss of hearing, my ability to understand speech started to diminish considerably.  By the time I became a candidate for a Cochlear Implant, my word identification scores were 0% for my right ear and 10% for my left ear.  Phone use was virtually impossible.  I struggled to lipread every word.  It was exhausting to try to carry on a  conversation.

I received my Cochlear Implant from the excellent surgery and audiology team at Sunnybrook Hospital in Toronto.  The surgery process went without a hitch.  I was out of the hospital the next day, and took a only a few days off from work.

After a month of healing, I went for my initial programming session.  I thought that I would be well prepared for this appointment.  After all, I am a trained Audiologist.  I have counseled patients myself about not having unrealistic expectations, especially on the first day.  But I knew there were some patients who could hear speech even on the first day of activation.  I wanted to be one of those people.  I felt I was entitled to be one of those people.  I was wrong.

After the initial Mapping was done, I listened to speech for this first time.  And it sounded like…GARBAGE.  Specifically, it sounded like R2D2.  It was just all a bunch of beeps and chirps.  I drove home that day and decided a nice bottle of single malt Scotch was needed.  I was feeling every emotion from anger, to bewilderment, to sadness.

But to make a long story short, the changes that occur over the next 6 months were rapid.  After about 2 weeks, the implant started sounding like Sammy the Snake hissing sentences into my head.  That’s better than R2D2.  Then it changed to Alvin from the Chipmunks.  Next it started to sound like a young Jerry Lewis.  Now it sounds pretty normal, at least to me.

My word identification score started to rapidly improve.  I cannot recall all of my scores, but after about 6 months I was understanding about 70% of monosyllabic words in isolation and 100% of words in sentences.  After one year, my monosyllabic word identification score for words in quiet improved to 96%.  I was and continue to be completely blown away by this.  After all, I started hearing just beeps and chirps.

Given that I recall having much better hearing, I can describe the difference between hearing through a CI vs a hearing aid.  Basically, when I had enough hearing to benefit from a hearing aid, speech and music sounded full and rich.  But as my hearing loss progressed, all I heard from the hearing aid were low pitches.  Everyone sounded like they had mashed potatoes in their mouths.

The CI sounds very crisp and precise.  I hear all the high frequency fricatives (s, sh, f, th etc) quite well.  I have been told that my speech has improved immensely, although I never realized that my speech production was deteriorating with my progressive hearing loss.  In hindsight, it makes sense.

Music and hearing in noise remained problematic.  To help with hearing in noise, we can get the same improvements hearing aid users get from the use of Directional Microphones or FM systems.  I use both with my CI and it helps.

For me personally, the use of a hearing aid in my non-implanted ear has helped with music perception.  Without a hearing aid, I can barely hear any bass at all. Bass makes music sound full and rich.  On the other hand, the treble I get from the CI makes speech and music sound clear and crisp.  Thus the CI on its own is fine for speech, but makes music sound like it is coming out of a small radio rather than a big stereo.  The hearing aid on its own sounds pretty bad for any type of sound, speech or music.  Combined with the CI, it does not help with speech, but does give music a richer deeper sound.

For those of you considering a Cochlear Implant, my single best word of advice to you is be patient.  Do not expect miracles, especially on the first day.  The improvements will come as your brain relearns to makes sense of these electrical signals.

Please remember too, that everyone is unique.  While my experiences are not uncommon, your pace of improvements and the final levels you reach could be better or worse than me.

I am so glad I took the step of getting a Cochlear Implant and would do it all over again in a heartbeat.

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10 New Years Resolutions for People with Hearing Loss


Here we go again…its that time of year where we make all sorts of cliche New Years resolutions.  We all make the typical “lose weight” “exercise more” types.  Those are permanently affixed to every year’s list of resolutions for me.

As a person with significant hearing loss, there are some things which we can do that will make our lives more enjoyable.  So here are some suggestions for New Years Resolutions.

  1. Develop and Enjoy a Hobby.  As people with hearing loss, our communication challenges affect us in so many ways.  Its easy to let this dominate our lives.  So this is why I put this one at the top of the list of resolutions, because I feel it critical to develop and nurture our entire person.  For me, I have taken up Archery.  I love how archery calms me.  In addition, It requires much practice and skill, so it challenges me.  And it completely takes my mind off my hearing loss.
  2. Learn to use a new Communication Device.  Have you tried captioning on your TV?  Have you tried an FM system?  Do you use your different programs on your hearing aid?  This year, make it a goal to pick a device and learn to use it well.
  3. Learn a New Communication Technique.  There are all sorts of behavioral ways we can learn to communicate better.  Technology is only part of the story.  Ask yourself questions such as “Do I always make sure I sit with the light behind me so I can see other people’s faces better for lip-reading?”, or “Do I use a specific clarification rather than just saying what or pardon me?”.  Pick just one technique and try to apply this as much as you can.
  4. Take Action. This involves learning to be assertive, but not aggressive.  I need to work on being a bit more assertive.  For example, when I sit in a restaurant, sometimes I do not pick the best seat.  The best seat would be one in which I can see as many faces as possible and where the background noise is behind me.  All I need to do is just say to my dinner party “Do you mind if I sit there?  It would help me communicate better.”
  5. Learn to Accept Things.  Even with all the best technology and communication techniques, there are certain situations that may still be too challenging.  For example, even though I may go out to a bar with friends, I cannot hear all the communication from all the people in my group.  With the use of my FM system, I can, however, have conversations with one person at a time.  Therefore I have learned to accept this limitation.  I wish I could hear all the jokes zipping around me, but I can’t.
  6. Develop Calmness.  Again, another one I need to work on.  I am getting better, but sometimes I do get frustrated by my limitations.  Normally, this drive I have to not let this hearing loss limit me is a good thing.  It has driven me to become an audiologist, and learn to use all sorts of technologies and strategies to communicate better.  But sometimes, we might hit a brick wall.  I can get worked up by this and boil inside and its not healthy.  This year, when I get that feeling, I will try to draw upon the calmness I am learning from Archery. (See how this all ties in together?)
  7. Teach a Loved One Communication Strategies.  Communication is a two way street.  I would say that perhaps unlike other disabilities, hearing loss always affects your love ones.  Talking always involves at least one other person and as such, requires changes from communication partners.  So take some time to teach one “significant other” some techniques.  For example, my niece is likely the fastest talking teenager on planet earth.  It is incredible how many words per minute she can say.  I have worked on getting her to slow down when talking with me. Interestingly, she is now working as a waitress saving money for University next year and she has found that she does her job better when she slows down her speech for her customers.  Win win!!
  8. Plan a Dinner with Good Communication Techniques.  This one is a fun project.  Scout out a restaurant that is low noise and has good lighting.  Pick out a table that also fits these two criteria.  Pick out a seat that allows you to see everyone and where your back is towards the background noise.  Decide the number of people in the dinner party that you comfortably can communicate with.  Think about the communication devices you will be using, such as an FM system.  Think about the request for clarification techniques you will employ. And then make a reservation and enjoy!
  9. Read.  For the majority of us, our sense of vision is just fine.  Our eyes are an unimpaired portal to information.  The more we read, the more we keep in touch with the world around us.  Topics become more familiar, which assists greatly in lip-reading and hearing.
  10. Take Time for Family.  Here’s another one for me.  I get so wrapped up in dealing with my own hearing loss issues, that I sometimes do not see how things are with my family.  Be sensitive to how your hearing loss affects your other family members.  Be thankful for the things they are already doing to help you.  Also, your family members have things happening to them, both good and bad.  Make sure we take time to listen to them, rejoice in their successes, and help them with their challenges.  Its not always just about us.

Stigma and Hearing Loss.


Over the past year, I have been growing my hair.  I have done this for a couple for reasons.  First, I am still in the midst of a mid-life crises, but in a good way.  I am celebrating the fact that I still have a full head of hair at 47, and I am showing if off it a silly display of vanity.  Second, it looks good when I am playing in my band (its great for head banging).  But thirdly, I must confess, is that it is helping to conceal my hearing devices.  The latter was not one of the initial motivating reasons to grow my mop, but I have noticed a change in the way people look at me now that the devices are less visible.

People tell me I look like Matthew McConaughey's chubby, but sexy, deaf brother.

So what is the issue here?  Obviously there is still a stigma associated with hearing loss.  Lets look at the definitions of this word “stigma”.  The Merriam Webster on-line dictionary defines stigma as “a mark of shame or discredit” and “an identifying mark or characteristic; specifically : a specific diagnostic sign of a disease”.

So do I see using a hearing aid, a cochlear implant or an FM system as a sign of shame or discredit?  Of course not.  In fact Canadians, Americans, Europeans, Australians, and others who live in the developed world should realize how fortunate we are to be living in a society in which our either our incomes or social programs can afford to provide us with devices that can help us hear again.  World wide, there are likely millions of individuals with hearing loss who cannot afford the luxury of better hearing.

Are using hearing devices a specific diagnostic sign of a disease?  Well, maybe.  It certainly does give away the fact that I do have a hearing loss.  But as I will point out later, there are other signs that indicate the presence of a hearing loss, namely, one’s communication abilities.

I think that for many years, hearing aid companies did not help to diminish the perceived  stigma associated with hearing devices.  They constantly tried to advertise “invisible” hearing aids.  One could even order hearing aids that were delivered to your home in a “plain brown envelop”.  What’s up with that?  Are we ordering porn here? These kinds of marketing practices only served to reinforce the notion that hearing loss is shameful.

Frankly, I think most of the notion of hearing aids being stigmatizing on an individual is bullshit.  The ultimate proof of that comes to me every year around Christmas time in which I go to lots of Holiday parties.  What I am about to describe to you has happened to me so many times, I wish had a nickel for every time it occurred.

The scene is set as follows.  I have my refreshing beverage in my right hand.  In my left hand is my Phonak SmartLink+ FM transmitter.  I am happily conversing away with lots of folks, and inevitably, someone will ask about it.  The conversation goes something like this:

Other Person: “Hey, what’s that thing you got there?”

Me: “Well, that’s my FM transmitter”

Other Person: “Oh yeah, so what does it do?

Me: “”It picks up your voice and helps block out the background noise.  so I can hear you a lot better in this noisy party”

Other Person: ‘Wow, cool.  so how do you hear with it?”

Me: “Well, it transmits via FM radio waves to little receivers attached to my cochlear implant and my hearing aid”

Other Person: “Wow, thats so cool.  You know my Dad should get one of those.  His hearing is way worse that yours”

Me:  “Really?  Wow. His hearing is worse than mine?  Is he deaf?”

Other Person: “No, no , no.  He’s not deaf.  Probably just hearing loss due to age.  But he just completely falls apart in social gatherings.  He totally avoids them.  Constantly saying “what?” all the time.  Drives us all crazy, especially my Mom.  He won’t even go to things like this anymore.”

Me:  “Does he wear a hearing aid.”

Other Person:  “No, he doesn’t want anyone to know he has a hearing loss.”

So what do I conclude from this exchange?

  1. People judge the amount of “disability” you on the basis of your behavior and your ability to function, not just on the presence of hearing devices.
  2. Because I seem to function better in a noisy environment with my FM system, hearing aid, and cochlear implant, I am perceived as having LESS of a hearing loss than a silly old coot with presbycusis (hearing loss due to age) who won’t even wear a hearing aid.
  3. Often the biggest barrier to better communication is the person with hearing loss themselves.  They erroneously think others won’t notice their hearing loss if they do not wear a hearing aid or use an FM system.  The fact is that they are constantly having communication breakdowns and this is extremely obvious to everyone.

But this brings me back to the hair thing.  The cochlear implant is bigger than a hearing aid, so folks do stare a bit.  It can get annoying.  So, I grew my hair a bit and it covers it up more.  So shoot me for wanting to look a bit cooler.  But I can assure you, I would never trade my ability to function for the sake of cosmetics.  I know that I would be perceived far worse if I kept saying “what, huh, pardon me”.  The hearing devices and FM system help me function and decrease negative perceptions.

Hearing during the Holidays.


The Holiday Season is now upon us.  There are work Holiday parties, Christmas parties in the neighborhood, Christmas or Hanukkah family dinners, you name it.  And they all have a couple of things in common:

  • It is noisy
  • Alcohol is usually served
  • The main activity is talking and listening.

These functions are not easy for people with hearing loss.  We function best in quiet settings and smaller groups where there is no competing noise.  Moreover we need to concentrate harder to communicate, so remaining sober and unintoxicated is a must.

You don't want to be like this guy.

Given that you will be going to places in which there is a high noise level, you need equipment and strategies on how to communicate in this environment.

So here is the Stelma Survival Christmas Guide for People with Hearing Loss.

  1. If you have a mild loss of hearing, you must use a hearing aid with a good Directional Microphone.  As I discussed in a previous blog entry, these microphones will pick up the person talking in front of you and reduce the noise behind you.
  2. Due to the high noise level of these functions, people with moderate, moderate-severe, severe, or profound  losses of hearing will definitely require an FM system attached to the hearing device (hearing aid or cochlear implant).
  3. You need to set your FM system microphone to the SuperZoom position for maximum noise reduction.
  4. If it is a cocktail party type of event, you will be standing and talking.  So you will place the FM transmitter in your left hand and your refreshing beverage in your right hand.
  5. When conversing, you will point the transmitter at the person you wish to communicate with.  We call this the Reporter Style of using an FM system.  Also make sure you hold the transmitter correctly.  See this video clip for more details.
  6. Remember to use Specific Requests for Clarification if you misunderstand.  For example instead of “what?”, say “Can you repeat the last part you said?”.  See my earlier blog entry on “What’s Wrong with Saying What
  7. Try to position yourself in areas with lower noise.  So if the music is blasting in the living room, move to the kitchen or dining room where these is less noise.
  8. Try to position yourself in areas with better lighting.  Again, if the living room is dark, stay in the kitchen where there is better lighting.
  9. Keep your alcohol consumption to a minimum.  It takes a lot of concentration for us people with hearing loss to communicate and alcohol gets in the way.  Not to mention drinking and driving is illegal.  I typically drink Gin and Tonics, but I alternate with mineral water and lime.  That way nobody bugs me about not having a drink in my hand.

If anyone else has some strategies that they use for coping with Holiday Parties, I would love to hear from you.

Happy Holidays everyone!

What’s Wrong With Saying “What?”


This post was inspired by a fellow blogger (http://chroniclebionicwoman.wordpress.com/2011/10/25/bionic-woman-on…faking-it/) who wrote about the perils of “faking it”.  It got me thinking of what we folks with hearing loss do when we don’t understand or hear.

Our initial inclination is the say “what?”, “huh?”, or “pardon me?”.  However, many moons ago, when I was in grad school for Audiology, I began to wonder if this was a good strategy to employ.  Or maybe we should try a more effective strategy.

When we fail to understand what has been said, we need to employ a request for clarification (RQCL).  RQCL can be classified into 2 categories; Specific RQCL and Nonspecific RQCL.  The chart below shows examples of the two different types.

Nonspecific RQCL Specific RQCL
What? What was that last part you said?
Huh? Can you please say that again more slowly?
Pardon me? Did you say you were going shopping?
Can you please repeat that? Can you please move your hand away from you mouth and repeat again?
I didn’t hear you, come again? Are you talking about baseball?

As you can see the Specific RQCL either asks the communication partner to repeat or rephrase only a portion of what was said.  Or it requests a change in the manner in which the utterance was spoken.  In either event, we are guiding the communication partner to a successful repair of the communication breakdown.

I had a theory that our communication partners would respond more favorably to Specific RQCL.  So I designed a series of experiments in which people had to rate how they felt about a person with hearing loss after watching a videotape of a conversation between a person with hearing loss and a normal hearing individual.  The conversations were scripted ahead of time to control for the number of communication breakdowns that occurred (Low, Medium, and High) as well as the type of repair strategy used (Nonspecific and Specific).  Subjects then used a semantic differential scale to make the ratings.  Below are just a few of the items from the scale I devised:

Talking to this person would make me feel…

Composed       1      2      3      4      5       6     Irritated

Energetic         1      2      3      4      5       6      Tired

Pleased            1      2      3      4      5       6      Annoyed

Comfortable    1      2      3      4      5       6      Uneasy

Here are the results from the study.  Note that a higher number indicates a more emotionally negative rating while a lower number indicates a more emotionally positive rating.  In other words, we want a lower number.

These results show a couple of things:

  1. When we have a low number of communication breakdowns (less than 25% of the exchanges), people have a more positive reaction to us.  It didn’t seem to matter if we only said “what”.  As long as we don’t do this too often, reactions will still be positive.
  2. When we have a medium or high level of communication breakdowns (greater than 50% of the exchanges), people start to get pissed off.
  3. If we use Specific RQCL, people react more favorably, especially as the number of breakdowns increased.

So what does this mean for us folks with hearing loss?

  1. It is crucial we get the best possible technology to help us hear and understand better so that we can reduce the number of communication breakdowns that occur.  That means having good working hearing aids or cochlear implants with directional microphones and, if needed, an FM system.
  2. Try to use Specific RQCL such as “Can you please repeat the last part”, “can you please slow down” etc.

Listen to the Music Live!


This post is the second part of my description of how I listen to music when I play in my band.

Just a quick review of the challenges I have hearing the music correctly.  Most of you who also have significant hearing loss will likely have these issues as well.

  1. The music can sound muddled and unclear due to the reduced frequency resolution of the impaired auditory system.
  2. Music can sound distorted since hearing aids and cochlear implants cannot always handle loud inputs.
  3. I need to hear my own instrument, while at the same time need to hear the rest of the band clearly.
  4. I need to keep in time.

The latter problem of keeping in time is solved by the platform I made.  See the previous posting for a description on that.

Through lots of trial and error I have come up with a system the finally works for me.  It allows me to hear my bass guitar, while at the same time hear appropriate cues form the guitarist and vocalist.

  1. First my bass goes into my Boss TU-2 Tuner.  Using an electronic tuner has made tuning the instrument a breeze.
  2. Then the signal goes into the Big Muff Pi Distortion Pedal.   I use distortion sparingly, but what I like about this pedal is that it splits the signal into two parts.  A dry unaffected output and a wet affected signal.
  3. The wet affected output then goes into my Markbass 800 Watt Bass Head and speaker cabinets.  This is what the audience hears.  But not me, I only feel this.
  4. The dry signal goes to a Boss GEB-7 Bass Equalizer.  This allows me to shape the signal so that i can hear it better.  I seem to hear the bass better when I enhance the frequencies between 400 Hz to 800 Hz.
  5. Next the signal goes to Boss LMB-3 Bass Limiter.  I need to ensure I get rid of harsh peaks that would sound distorted to me.
  6. The signal now goes into the SansAmp Bass Driver DI to bring the signal up from a weak signal to a line level signal.
  7. Finally the signal goes into the Phonak TX300V Studio Transmitter.  This send sthe signal to me to hear.

But wait, we are not done yet!  I also need to hear the rest of the band correct?

  1. The guitarist amplifier, guitarist background vocals,  and the main vocalist are all being picked up by their own microphones and fed into the PA system.
  2. Their is an auxiliary output on the mixing board.  I adjust the individual auxiliary output volume controls so that I hear the exact amount.  Generally, with the pop music we play, I like to hear more of the main vocalist.
  3. This then goes into another compressor (oddly enough called the Really Nice Compressor).  I then adjust the kneepoint, attack time, and release time so that the loud signals are lowered and the weak signals are enhanced.
  4. This signal also goes into the Phonak TX300V Studio Transmitter.

The final step is blending the bass signal (my instrument) and the rest of the band.  The TX300V is nice in that it has 2 channels of input and a blend control.  I can now belnd and adjust the two signals to my liking.

So that’s how I do it folks.

Sue Thomas: F.B.Eye. Very fun. Very inaccurate.


I was watching a rerun of Sue Thomas F.B.Eye the other day.  This show was aired in the early 2000’s, but was cancelled in 2005.  Thats too bad. , because it was fun entertainment.  It was loosely based on the real-life experiences of an actual deaf women whose ability to lip-read landed her a job with the FBI.

What I liked about the show is the positive image it portrayed of a deaf person.  Moreover, I like the idea of making lemonade out of lemons.  Also, her hearing ear dog Levi is adorable.  He’s almost as cute and smart as my hearing ear dog Amie!

I also almost had an opportunity to assist in law enforcement with my lip-reading skills.  I was asked by a police department to lip-read a surveillance video tape that had no audio.  They believed the two men were plotting a murder.  Unfortunately, the men were not speaking English, so I was unable to help.  Thus ended my career in law enforcement.

As enjoyable as the show was, it was also grossly inaccurate.  In the show, you never see the character Sue Thomas ever asking for people to repeat things.  She perfectly seems to understand everything just by lip-reading.  This is impossible.

Only about 30-40 percent of speech is visible on the lips.  Some sounds such as /k/, /g/, /h/, are produced at the back of the throat and cannot even be seen at all.  Other sounds look exactly the same.  For exactly, /p/, /b/, and /m/, are all produce with both lips and look the same.  Therefore words such as “pat”, “bat”, and “mat”. will look the same.  Other examples of homophonous sounds include /s/ and /z/, /f/ and /v/, /t/ and  /d/.

Only hearing can allow you to distinguish between all the speech sounds.  So it is critical that you have the proper hearing equipment if you plan on communicating via spoken language.

One new technology that is helping improve the understanding of speech is something called “Non-Linear Frequency Compression”.  This technology is found in many Phonak hearing aids.  Basically what it does is it shifts high frequency information from an area of poor of completely missing hearing into an adjacent area of audible better hearing.  As a result, many high frequency sounds like fricative consonants  (e.g. /f/, /s/, /th./ or environmental sounds such as birds chirping become audible again.

This technology has been independently evaluated by a number of researchers.  For example, Dr Jace Wolfe concluded that “non-linear frequency compression can be considered as a viable option for children with moderate to profound high-frequency hearing loss”.  Similar results have been found in adults as well.

Note that this technology cannot help if your hearing loss is too severe.  This is the case with me.  But then we have the option of getting a Cochlear Implant.  These devices do a good job of restoring audibility of many of these consonant sounds.  For more information on Cochlear Implants check out Advanced Bionics, Med-El, and Cochlear Corporation.

What’s it Like to be Deafened?


What’s it like to have a hearing loss?  What is it like to hear with a Cochlear Implant?

People often ask me this question, and it is not easy to answer.  So I thought I would take one of my photographs I took while hiking in the Rocky Mountains and play with them to try to illustrate with it is like.

Let’s look at the photo untouched.  This would represent normal hearing.  You see all the colours and the detail of the mountain.

Now the next picture would represent someone who would be considered “Hard of Hearing.”.  You can see the picture is blurry and unclear.  Similarly, someone with a mild to moderate loss of hearing would still hear things, but the words would not be clear.  Hearing aids with directional microphones, and the addition of an FM system can help restore the loss of this detail.

The next picture represents what it is like to be deafened.  Note that you can still barely detect something, but not much.  Similarly, someone who is deafened can barely hear anything.

This next picture is what it would have been like to hear with one of the early generation Cochlear Implants from 10-15 years ago.  We can see that it is a mountain again, but only a basic representation.  The colour and detail are not present.  Similarly, these early implants did help people to hear speech again and when combined with lipreading, was a very helpful device.

The next image represents to me what it is like to hear with my combination of a modern cochlear implant and hearing aid.  It is getting closer to the original image.  You can see that this is a mountain again.  However, it does not have the same detail as the original image.  It is a simplified representation.  Similarly, I can hear things that are said and can understand most speech in quiet.  But the sounds do not have the same richness and detail as when I had more hearing.

This is, of course, a very crude and oversimplified representation of what it is like. Nonetheless, sometimes simple explanations are also useful to help us understand.

I am extremely grateful that there is technology that can help me hear again. For a deafened adult who once had more hearing, a silent world would be devastating.  My use of a cochlear implant, hearing aid, and FM system have made a huge difference in my life.  Yes, it is not the same as normal hearing.  These devices are not cures.

FM Systems…when a hearing instrument is just not enough


Or should I call this post “Let’s get rid of the Freakin Noise 2: FM Systems”.

I talked about Directional Microphones and how they can reduce the noise but about 4-5 dB.  This technology is great for folks that have up to a moderate (50 dB HL) hearing loss.

But for people with moderate-severe (60 dB HL) losses or greater, you need more than directional microphones on your hearing aid.

Here’s why.  Many times we find ourselves in places where the signal to noise ratio (SNR) is 0 dB.  This means that the noise around you is the same loudness and the person you want to listen to.  Think about a restaurant or bar with all sorts of people blabbing away.  They are the same loudness as your spouse or buddy in front of you.

When you have a moderate-severe hearing loss, you need a SNR of 7 dB or greater to understand.  So if a directional microphone gives you a 4 dB improvement, that’s still not enough.

An FM system gives you a 15-25 dB improvement.  Now you can converse much easier in this noisy environment.

Here’s a link to a section on the Phonak Website that explains how FM systems work.  But the key to getting the most out of an FM System is knowing how and where to use them.  Here are the places that I personally use mine:

  1. Car
  2. Restaurant
  3. Coffee Shop (Tim Hortons…mmmmm)
  4. Meetings
  5. Skiing Lessons
  6. Kayak Lessons
  7. Parties
  8. Bars
  9. Listening to iPod
  10. GPS in car
  11. Bass Guitar Practicing
  12. Live shows
  13. Tour guides
  14. and more
Next blog entries will highlight how to use an FM system in this situations.