Why Can't Industry Design an Affordable Hearing Aid?
Hugh Pickens writes "Tricia Romano writes in the NY Times that over the last 10 years, purchasing a hearing aid had become even more difficult and confusing than buying a new car — and almost as expensive. 'I visited Hearx, the national chain where I had bought my previous aids. There, a fastidious young man spread out a brochure for my preferred brand, Siemens, and showed me three models. The cheapest, a Siemens Motion 300, started at $1,600. The top-of-the-line model was more than $2,000 — for one ear. I gasped.' A hearing aid is basically just a microphone and amplifier in your ear so it isn't clear why it costs thousands of dollars while other electronic equipment like cellphones, computers and televisions have gotten cheaper. Russ Apfel, an engineer who designed a technology now found in all hearing aids, says there is no good reason for the high prices. 'The hearing aid industry uses every new thing, like digital or a new algorithm, to raise prices,' says Apfel. 'The semiconductor industry traditionally reduces the cost of products by 10 to 15 percent a year,' he said, but 'hearing aids go up 8 percent a year annually' and have for the last 20 years."
for-profit healthcare
Sheesh, evil *and* a jerk. -- Jade
Economics of scale. Semiconductor industry sells a lot of chips. Hearing aid manufacturers don't sell that many hearing aids.
Regulations, testing, etc, will all drive the price of the unit up. But in the end it's because the manufacturers have figured out what the highest price an average insurance company will pay, and put it right at that point.
Today's digital hearing aids are actually very sophisticated devices. People with hearing loss don't need all frequencies (and noise) amplified. Typically, their loss is toward specifics frequencies. The new hearing aids are programable and can enhance the specific frequencies to compensate for the user's hearing losses.
Hearing aids are unique among consumer electronic items, because they have almost zero tolerance for latency. If the media stream coming from your entertainment device is delayed by 12ms, you'll never notice the difference. If the sound coming out of your hearing aids is delayed by 12ms, your ability to locate items by sound and react to them is going to be completely borked. At best, you'll be stressed out and irritated. At worst, you'll feel disoriented and confused.
The problem is, all of the cheap ways to do digital signal processing add intolerable amounts of latency, so hearing aids are stuck with hybrid analog+digital designs that try to keep their filtering problems in the domian where they can be resolved the fastest. With digital designs, you can get away with sloppy designs that have corners cut and mostly get away with it if premature failure is OK as an option. With analog designs, every penny you shave off is going to have consequences, and those consequences add up quickly. Mixed-signal designs are the worst of both worlds -- you have to use premium-quality components and be aware of analog signal behavior every step of the way, then turn around and try to fix the noise and artifacts introduced by the digital part as well.
Yes, a hearing aid that simply amplifies sound through some cheap analog means, maybe with simple filtering, would be very cheap to make. However, for most users, that kind of hearing aid would be about as useful as a pair of drugstore reading glasses for somebody who has astigmatism. For profound hearing loss, making speech recognizable is about as hard as trying to fix botched laser surgery that's left somebody with higher-order optical aberrations that simply can't be fixed by a simple symmetric lens.
God/Nature/the Univrese has a cruel sense of humor, and here's an example that will make sense to people who had high-end car stereos at some point in the past. Remember what happened when you ran your stereo's line-level signal through a low-pass filter to separate out the bass channel? It flipped the phase, and made it lag. At the time, you probably dreamed of the day when you could use a DSP to implement an infinite-slope crossover that fixed both problems. Then, years later, you learned the cruel truth: in order to implement such a filter, you had to wait until you had a few thousand samples to analyze and work on... and the time you had to wait until you had a big enough window of samples to analyze ended up being almost exactly the same amount of time that the analog low-pass filter delayed the bass. The digital breakthrough is that if you don't have to do that analysis in realtime, and you have enough storage space to analyze the music offline, then re-sync everything up and store all the individual tracks separately, you can achieve the flawless perfection you always sought as a teenager with laggy bass. It's now cheap and easy to do, because you can take a whole CD, rip it to raw PCM, analyze it with your PC into separate 16-bit audio tracks for every single speaker element in your car, tweak their phase relationships to your heart's content, then write it all to a microSD card & have room to do the exact same thing to a few dozen more CDs.
The problem is, hearing aids don't have that luxury. They're one of the hardest-core realtime applications out there. You can't sample the sound, recursively process it, then go back and remix it at your leisure until it's *exactly* right, then play it over and over again thereafter. You have roughly half of a millisecond to do what you're going to do and send it to the transducer in the user's ear canal.
Of course, there's a big gray area of users whose hearing problems wouldn't be solved by cheap analog hearing aids, but like someone who's got a diopter of astigmatism and moderate far-sightedness, a pair of $12 reading glasses from the rack at the drug store would probably be better than nothing at all. But make no mistake... even if you could embrace the hacker/maker ethic, buy your own best-of-breed he
Regulatory capture
A hearing aid is basically just a microphone and amplifier in your ear so
This is like saying that a Ferrari is basically a VW bug on a race track so why is it so expensive? [yay car analogy!].
A good hearing aid has a microphone, speaker, battery and amplifier which are 1/50th the size of the one in your cellphone yet deliver much higher quality of sound all while filtering undesirable sounds.
Yes, in my opinion they are overpriced, but arguing that they are just a microphone and an amplifier is just ignorant.
If you want electronic ear plugs that do the same thing as Shooters' earmuff, be prepared to spend a bit more money than $50 to $100. Still, to get a pair of custom molded ear plugs made, it'll only will cost you between $100 to $200, and that's just for simple ear plugs. You add in the electronics and the price will go up a bit (around $50 to $500 depending on what you're getting). Hearing aids aren't much different than these "off-the-shelf" ear plugs, they're just a bit more sophisticated since they can be tuned by a audiologist to address each individual person's needs.
I had a set of custom ear plugs made a couple years ago at a motorcycle shoe and each pair was $55. Quite the bargain. Just recently, I had another set of custom ear plugs made that come with Noise Brakers and those set me back $120 or so directly from manufacturer (they're local to me, so I just stopped by their building).
Do I think hearing aids actually cost $2000 a pair? Absolutely not. So why are they so expensive then? I believe it's due to a serious lack of competition. Most people who get hearing aids are probably getting them through their insurance company or the VA, so costs are a minimal concern to them as they only have to pay their co-pay or deductible. But if you want to buy them direct yourself, the prices are outrageous and most people will just forgo them and suffer in silence. On a whim about a month ago, I went to a Sonus Hearing store and asked how much they charge for earplugs and they wanted $150 just for the impressions! Plus, I would still have to pay whatever the cost was to have the actual earplugs made. Who do they charge so much? Because they can.
http://ask.slashdot.org/story/12/06/13/1828232/ask-slashdot-why-are-hearing-aids-so-expensive
http://science.slashdot.org/story/11/09/09/2346233/is-there-a-hearing-aid-price-bubble
http://ask.slashdot.org/story/10/03/13/1916203/why-are-digital-hearing-aids-so-expensive
simple:
insurance
medical device
niche market
just because you are deaf, it doesn't mean that you are too blind, stupid and lazy to look at the last 3 years of the same fucking article with the exact same answers.
This is a good point. It's possible that many people with moderate hearing loss are overpaying for aids that are overkill for their condition. For people with more difficult to address conditions, though, the cheaper ones just don't cut it. My dad has severe tinitis, with associated hearing loss.* He tried hearing aids at all price levels. Only some very expensive ones worked well enough for him to even bother with (couple thousand dollars per ear, but I don't remember the exact price).
*Recent research into tinitis seems to lean towards the hypothesis that I worded that backwards. The old hypothesis was that the ringing sound makes it hard to hear in that range. The new hypothesis is that the ringing is a side-effect of losing hearing in that range -- i.e. it is the equivalent of phantom pain when a limb is severed.
Medicare.
Medicare doesn't cover hearing aids.
Medicare does cover cataract surgery, and the price of cataract surgery has dropped dramatically over the past 30 years.
Okay, so now you've added R&D costs for a home-configuration device, and need to test and certify IT to make sure that it's not accidentally blowing out someone's ear drums, and you need to support it on dozens of different devices, and make sure it's secure (bluetooth hack + self configuring = your $1600 hearing aid is bricked). I'm sure that will drive down the costs of the device signifcantly.
The devices cost "over a thousand dollars" because the devices are complex pieces of integrated circuitry which have to operate continuously, reliably, in a hostile-to-electronics environment (the ear canal isn't exactly a cool, dry place), be comfortable, energy efficient, and safe, and last for a minimum of several years.
This argument that "these things should cost way less" is silly - they're NOT phones, they're NOT tablets, they're not laptop computers. They're highly specialized devices, selling to a limited sized market, with much stricter operating parameters, and high efficiency and safety requirements. Relax all of those, and perhaps you can make one cheaper - but it's going to be less reliable, less durable, less safe, and generally not a very satisfactory experience for someone who actually needs the device.
Certainly the free market isn't driving down the price...
The free market only works if customers aren't stupid. The guy in TFA goes to one reseller, and looks at hearing aids from one manufacturer. Yet even he admits that he could get one for far less "on-line", but for some reason he doesn't fee that is an option. Why not?
Two months ago I bought a hearing aid for my father-in-law from Amazon for $329. He describes it as "fantastic". So TFA's claims that nothing is available for less than $2000 is clearly nonsense.