Prática de Shadowing: Why Hearing Aids Sound Tinny (And How to Fix Them) - Aprenda a falar inglês com vídeo
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Well, you finally did it.
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You got a brand new pair of hearing aids and they have all of the bells and whistles.
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They have a deep neural network for artificial intelligence sound processing.
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They're rechargeable batteries.
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You've got the new form of LE Audio Bluetooth, which enables a feature called AuraCast, and they're even waterproof.
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So why the heck do they sound so freaking tinny?
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Hey guys, Cliff Olson, Doctor of Audiology and founder of Applied Hearing Solutions in Phoenix, Arizona.
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And this is a question that I get all the time about the sound quality of hearing aids.
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So in this video, I'm gonna explain exactly why your hearing aids sound so tinny, what's causing it,
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and what you can do to fix this problem to make your hearing aid sound as natural as humanly possible.
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So here's the deal.
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To truly understand why hearing aids sound so tinny to some people, you really have to have a good understanding of hearing loss in general.
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When people start to lose their hearing, it's usually the high frequencies that decline first.
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When this happens, you typically start to notice that you can hear that people are talking, you just can't quite understand what they're saying.
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It's a clarity issue, not a volume issue.
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An easy way to explain this is if you turn up the volume on the TV, it typically makes things louder but not clearer,
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especially if you're watching a show that has accents.
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Like the popular TV shows Outlander with their Scottish accents or Peaky Blinders with their English accents.
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This problem is even more apparent inside of noisy places like restaurants, where you have all this restaurant noise that you can hear just fine,
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but you have trouble understanding the person who's right across the table from you.
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This loss of high frequency hearing is caused by the deterioration of hair cells inside of your cochlea, which is your hearing organ.
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Let me give you a really quick anatomy and physiology lesson as to how this works.
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When sound enters your ear, it travels down the ear canal and vibrates your eardrum.
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Those vibrations are then passed through three tiny bones in your middle ear space called the malleus, the incus, and the stapes,
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and transfer that vibration of sound into the cochlea.
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Your cochlea is tonotopically organized, which means that different regions inside of the cochlea respond to different sounds, but these high -frequency sounds,
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up to 20 ,000 Hz, are at the base of the cochlea, which is right where the sound enters.
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If we take a look inside of the cochlea, we will see that you have different hair cells,
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and the hair cells that I'm specifically talking about here are the outer hair cells.
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Their job is to amplify those tiny vibrations of sound so they're strong enough to activate the inner hair cells,
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which then send signals up the auditory nerve to the brain so you can hear.
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But as these high -frequency outer hair cells become damaged, they can no longer provide this natural amplification effect.
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Without enough vibration, many of those high -frequency speech sounds never activate the inner hair cells, so speech information never reaches your brain.
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So what speech information is actually missing when you have a high -frequency hearing loss?
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For this, let's briefly look at an audiogram.
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For this typical high frequency hearing loss, any of the speech information that is above the X's
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and the O's in the shaded gray region can no longer naturally be heard by this individual.
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Any of the speech information below the X's and the O's in the white region can still be heard naturally.
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The high frequencies on the right hand side of the graph have most of your consonant sounds
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that provide the perception of clarity in speech.
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And the low frequencies on the left hand side of the graph have most of your vowel sounds
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that provide the perception of volume in speech.
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For a visual example, which word do you think this is?
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Is it fat?
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Is it sat?
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Is it cat?
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Or is it even a four -letter word, chat?
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When you have a high -frequency hearing loss, it could literally be any of those options and more.
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Which is why it's important
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that hearing aids amplify sounds in these high -frequency ranges to restore your access to this speech information.
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But what does all of that have to do with your hearing aids sounding tinny?
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Well, it has everything to do with it.
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You see, when you use hearing aids to amplify these high frequency sounds to restore clarity,
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it can also cause a tinnitus perception for two main reasons.
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And reason number one is that your hearing aids are not programmed correctly.
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The good news is a hearing care professional does not have to guess as to whether
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or not your hearing aids are programmed the right way.
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They can just verify it with real ear measurement.
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Real ear measurement is a verification technique
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that a hearing care professional can use to see
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if your hearing aids are properly amplifying sound for you to your hearing loss prescription.
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They can see if some sounds are being overamplified in certain frequency ranges, and they can see if sounds are being underamplified in other frequency ranges.
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To perform this verification procedure, they have to place probe microphone tubes inside of your ears along with your hearing aids.
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They then play a calibrated sound from a speaker in front of you
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and measure how much amplification you're receiving from your hearing aids by plotting it on their computer screen.
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Anywhere the solid amplification curve is above the hash mark prescription curve,
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it means that you're being overamplified and anywhere the solid curve is below the hash mark curve, it means that you're being under amplified.
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Now let's get to the tinny perception.
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If you have a tinny perception of sound, chances are that you're being over amplified in your ear resonance range.
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You see, when sound enters your ears, it receives a natural boost in amplification around 2700 hertz.
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On average, this natural amplification effect adds up to 17 decibels to an incoming sound.
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And I don't want to spend too much time explaining what decibels are, that's definitely a topic for another video, but 17 decibels is a lot.
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And if this is unaccounted for when it comes to programming the amplification levels of your hearing aids,
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you're going to be significantly over amplified between 2 ,000 and 4 ,000 Hertz on average.
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But the only way to even know this is if you measure it with real ear measurement.
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This is what an unaccounted for resonance peak looks like that causes a significant increase in the tinniness perception of sound.
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You see this bump right here, where it peaks above the hash mark curve?
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This is a resonance peak.
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And for this individual, it would make their hearing aids sound incredibly tinny.
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But once corrected for, it should look more like this.
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This would likely take away all of that tinny perception of sound while still keeping speech clear.
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Without real or measurement, neither you
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or your hearing care professional has any clue as to whether or not you're being overamplified in this range.
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And it essentially turns your hearing a programming session into a guessing game,
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where they're having to use trial and error to try to figure out which frequency ranges are being overamplified for you.
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And what they inadvertently end up doing, even if they get rid of the tinniness perception,
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is that they're then under -amplifying you in other frequency ranges, which is destroying your ability to hear optimally.
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The same thing is true even if you don't get a tinny perception of sound.
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You never really know if your hearing aids are programmed the right way.
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So if you're going to a hearing care professional who is not performing real -ear measurement when programming your hearing aids,
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it's probably time to find a different provider.
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And if you want to guarantee that you can find a provider who performs this critical verification procedure, make sure that you check out my website,
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hearingup .com, and find a HearingUp Network member in your area.
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Every hearing aid member has been vetted for their commitment to following comprehensive audiologic best practices,
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including real ear measurement, to ensure not only that your hearing aids do not sound tinny, but that you're able to hear your absolute best.
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Now, in addition to this resonance peak issue, there is another programming error that usually causes this tinny sound perception,
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even if you've corrected for the resonance peak, and that is not properly blending the amplification from the lows through the mids and into the highs.
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If your hearing aids are only amplifying the high frequency ranges for your hearing loss, but you don't properly blend the amplification into the high frequencies,
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a lot of the times this can make your hearing aid sound tinny.
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Of course, real ear measurement is also the solution to this problem
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because it allows a hearing care professional to see
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if they're also giving you enough of this blending through the lows and the mids.
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But what if your hearing aid programming was done correctly with real ear measurement
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and they corrected for your residence peak and they corrected for the blending of the lows, the mids, and the high frequency amplification levels,
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but you're still getting this tinny sound perception.
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Well, that could lead to the second reason why your hearing aids sound tinny, which is lack of auditory adaptation.
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You've got to remember that if you have a high frequency hearing loss, chances are you have not heard those sounds in a long time.
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And research tells us
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that it takes only approximately 30 days with a mild level
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of hearing loss before your brain starts to change the way that it processes sound due to this auditory deprivation.
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And on average, most individuals have had hearing loss for several years before they start to even realize it.
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But by that time, auditory deprivation has definitely set in,
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and other areas of your brain start to overtake your auditory cortex and use that space for something else.
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And when you bring back all of these missing sounds at once and your brain's not ready for it, you can get this tinny sound perception.
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The good news is research has also indicated
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that it takes your brain 30 days to revert back to the way
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that it was as long as you're treating your hearing loss with hearing aids that have been programmed properly.
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Inside of this first 30 days, your hearing aids may sound a bit tinny,
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and that's okay, as long as that tinny sound perception is not being caused by improper programming.
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Now, if you've been wearing your hearing aids for 30 days, and you've been very consistent day in, day out, and wearing those hearing aids,
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and you're still getting a tinny sound perception, then your hearing care professional may have to taper off the amplification levels of the high frequencies.
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You just have to be careful because you could be trading one problem for another.
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If you turn down the high frequencies too much, yeah, it'll get rid of the tinny sound perception,
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but it could also take away your clarity in speech.
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So if you have to take this approach because you just can't stand that tinny sound perception from your hearing aids,
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make sure that your hearing care professional takes it very slow one decibel at a time.
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Now to finish this off, one thing that you really need to understand here is that when you have a hearing loss,
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it means that you have damage to your auditory system.
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It may not be possible to completely eliminate the tinny sound perception of your hearing aids and still maintain good speech clarity.
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But as long as you're aware of this relationship between high frequency amplification with hearing aids and a tinny sound perception,
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you have a much better chance of getting rid of that annoying sound and still hearing really well with your hearing aids.
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Alright guys, if you enjoyed this video, do me a huge favor and click the like button.
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And if you want to see more videos just like this one, make sure that you're subscribed to the channel with notifications turned on.
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And I'll see you in the next video.
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Vocabulário e dicas de fala para esta lição
Esta aula de conversação usa o vídeo “Why Hearing Aids Sound Tinny”. As palavras que mais se repetem: hearing, sound, aid, tinny, perception. Este vídeo tem 134 frases e 2081 palavras para praticar shadowing. A fala dura 9:59. O falante fala rápido, cerca de 208 palavras por minuto, então espere sons ligados e reduzidos. Apenas 81% das palavras estão entre as 3.000 mais comuns do inglês, por isso o vocabulário é exigente.
Vocabulário principal deste vídeo
15 palavras do vídeo que vale a pena aprender, com pronúncia e significado:
| Palavra | Pronúncia | Significado |
|---|---|---|
| frequency substantivo | /ˈfɹiːkwənsi/ | frequência |
| perception substantivo | /pɚˈsɛpʃ(ə)n/ | percepção, perceção |
| measurement substantivo | /ˈmɛʒ.ə.mənt/ | medida, medição |
| curve substantivo | /kɚv/ | curva |
| clarity substantivo | /ˈklæɹ.ɪ.ti/ | clareza, claridade |
| resonance substantivo | /ˈɹɛzənəns/ | ressonância |
| blend verbo | /blɛnd/ | misturar |
| vibration substantivo | /vaɪˈbɹeɪʃən/ | vibração |
| accent substantivo | /ækˈsɛnt/ | acento, tonicidade |
| verification substantivo | /ˌvɛ.ɹə.fɪˈkeɪ.ʃən/ | verificação |
| hash substantivo | /ˈhæʃ/ | picadinho |
| naturally advérbio | /ˈnæt͡ʃ.(ə.)ɹə.li/ | naturalmente |
| procedure substantivo | /pɹəˈsiː.d͡ʒə/ | procedimento |
| ear substantivo | /ˈɪə̯/ | ouvido, orelha |
| correctly advérbio | /kəˈɹɛk(t).li/ | corretamente |
Phrasal verbs que você vai ouvir
| Palavra | Pronúncia | Significado |
|---|---|---|
| take away verbo | /ˌteɪk əˈweɪ/ | levar embora, retirar |
| check out verbo | verificar, sacar só | |
| end up verbo | terminar, acabar | |
| figure out verbo | descobrir, deduzir | |
| turn down verbo | recusar, rejeitar | |
| turn up verbo | aparecer |
Gramática neste vídeo
As estruturas que o falante mais usa, com as palavras exatas do vídeo:
| Estrutura | No vídeo |
|---|---|
| Voz passiva be + particípio passado — o foco está no que acontece, não em quem faz | is caused · are then passed · be heard |
| Present perfect have/has + particípio passado — uma ação passada que ainda importa agora | has been vetted · you've corrected · have not heard |
| Orações relativas who / which + oração — informação extra sobre uma pessoa ou coisa | cochlea, which is · organized, which means · ranges, which is |
Pronúncia para ficar de olho
O falante usa 36 contrações e formas reduzidas, como you're, they're, you've. Diga-as na forma curta, do jeito que você ouve.
- Os sons de “sh” e “zh”: perception /pɚˈsɛpʃ(ə)n/, measurement /ˈmɛʒ.ə.mənt/, vibration /vaɪˈbɹeɪʃən/, verification /ˌvɛ.ɹə.fɪˈkeɪ.ʃən/, hash /ˈhæʃ/
- Palavras longas — acerte a sílaba tônica: verification /ˌvɛ.ɹə.fɪˈkeɪ.ʃən/, naturally /ˈnæt͡ʃ.(ə.)ɹə.li/, essentially /ɪˈsɛnʃəli/, incredibly /ɪŋˈkɹɛdɪbli/, comprehensive /ˌkɑm.pɹəˈhɛn.sɪv/
Sons difíceis para falantes de português:
- Consoante final — sem acrescentar um “i” depois: measurement /ˈmɛʒ.ə.mənt/, blend /blɛnd/, accent /ækˈsɛnt/, activate /ˈæktɪˌveɪt/, topic /ˈtɑpɪk/
- /l/ final — a língua toca o céu da boca, não vira “u”: enable /ɪˈneɪ.bəl/, artificial /ˌɑː.tɪˈfɪʃ.əl/, canal /kəˈnæl/, whistle /ˈwɪs(ə)l/, neural /ˈnʊɹəl/
- /h/ — um sopro suave, diferente do “r”: hash /ˈhæʃ/, comprehensive /ˌkɑm.pɹəˈhɛn.sɪv/, heck /hɛk/, hertz /hɝts/, humanly /ˈhjuːmənli/
Como praticar com este vídeo
- Ouça o vídeo inteiro uma vez sem falar e anote as palavras que você não conhece.
- Comece na velocidade 0,75×, faça shadowing frase por frase e volte à velocidade normal quando ficar fácil.
- Grave a sua voz e compare com o original, prestando atenção a palavras como frequency, perception, measurement.
O que é a Técnica de Shadowing?
Shadowing é uma técnica de aprendizado de idiomas com base científica, originalmente desenvolvida para o treinamento de intérpretes profissionais. O método é simples, mas poderoso: você ouve áudio em inglês nativo e repete imediatamente em voz alta — como uma sombra seguindo o falante com 1-2 segundos de atraso. Pesquisas mostram melhora significativa na precisão da pronúncia, entonação, ritmo, sons conectados, compreensão auditiva e fluência na fala.