clarity road noise

Discussion in 'Clarity' started by ChrisL, May 28, 2018.

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  1. KentuckyKen

    KentuckyKen Well-Known Member

    Many have posted that the rattle comes from the A pillar or the joint between the A pillar trim and the dash and can be tested by holding the A pillar trim when it occurs. Some foam tape seems to be a good fix. Hope it works for you.
     
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  3. tdiman

    tdiman Member

    ANC isn't designed for road noise. Honda tunes it for low rpm engine noise. It uses a combination of rpm input and microphones to do this, and it's all below about 2300rpms. The benefit is marginal at best, those that have disabled it (to upgrade sound systems) claim there's hardly a noticeable effect.

    That said, it's neat technology and I'm sure it does something... Just be clear that you are not talking more than a few dB... Definitely not tens even.

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  4. Dreamgt

    Dreamgt New Member

    Oh, in that case... ANC seems pretty useless, tbh.

    I feel like the Clarity is pretty quiet anyways!
     
  5. Sandroad

    Sandroad Well-Known Member

    Here is the Honda description of ANC (albeit in “shorthand” for sales training).

    https://salestraining.honda.com/en/Shared-Technologies/Shared-Technologies/Engineering-NVH/Active-Noise-Cancellation-ANC-System-Accord-CR-V-Odyssey-Pilot-and-Ridgeline

    In other brands of vehicles I’ve owned and in a Crosstour I test drove, ANC was remarkable in its ability to create a hushed cabin. It has great potential and I do wish Honda in particular would include it in all vehicles and apply it to road noise.
     
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  6. KentuckyKen

    KentuckyKen Well-Known Member

    I read in the Nav manual that we do have ANC but it’s not for cabin noise mitigation, it’s just for the microphone in the center hump behind the rear view mirror. It’s purpose is to cancel out extraneous noise when the driver is using voice recognition. It also cautions that this is why voice recognition from the passenger seat doesn’t work well or at all.
     
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  8. Sandroad

    Sandroad Well-Known Member

    Interesting. Amazing what can be learned by reading the manual. I guess I better do that too :D
     
  9. Steven B

    Steven B Active Member

    Since road noise changes much faster than engine noise, the system responsiveness to road noise using microphones would have to be in the single milliseconds to be effective, so I don't expect this to come to common cars anytime soon.
     
  10. KentuckyKen

    KentuckyKen Well-Known Member

    It’s on p17 of the manual. Sorry, I forgot to add this. I like to cite my sources when I’m not just throwing out my opinions and assumptions.

    The mic is actually up by the map lights which I assume is the perforated area between the sunglass holder and the Home Link buttons.
     
  11. tdiman

    tdiman Member

    I spent some time on Honda service Express. There's a rear and front microphone for ANC and the module is behind the glove box. Both mics are connected to the anc box and the box is connected to the nav unit. The nav unit has a built in DSP to combine the signals together. Kinda crazy they have a separate anc unit for just phone calls. The CRV uses the factory sub, so perhaps the stock speakers aren't capable enough since the clarity has no sub.

    Concerning sound, there are also resonators attached to the inside of the wheels to reduce mid frequency road noise. There is a service document stating to not try and remove them, which is the only place I saw them referenced. Nifty.

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  13. KentuckyKen

    KentuckyKen Well-Known Member

    We should take up a collection for you and AnthonyW for posting all this good info from the Honda Service Express.
    Thanks for sharing.
     
  14. KenG

    KenG Member

    Lol... mine got super quiet after I realized the dealer had the tires filled to 55lbs!!!!


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  15. tdiman

    tdiman Member

    That's so when it sits flat for months it doesn't deform. Comes from factory like that. They are supposed to reduce the pressure during PDI. Mine didn't either...

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  16. tdiman

    tdiman Member

    We have two Honda's... $10 every few months for getting up to date on TSBs and the like is well worth it.

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  17. kent335

    kent335 Member

    I previously drove a 2005 Acura TSX before purchasing a 2018 Honda Clarity Touring Edition. The Clarity is a little bit quieter than the TSX.
     
  18. Artifact

    Artifact New Member

    Took delivery of my Clarity the other day and took it on the highway and it felt off. I was feeling every tiny bump road noise etc. I decided to check the tire pressure this morning and all 4 were at 48psi. Even though it says 36psi on the door I did go down to 34psi.
     
  19. Clarity 4 life

    Clarity 4 life New Member

    Yesterday, I unplugged the ANC module. I started to feel nausea during local stop and go driving.

    Here is a youtube video about disconnecting a 2018 Honda Accord ANC


    The ANC module is located more to the left above the glovebox.
    Sorry, I didn't think about making a video because I was short on time and it was 25 degrees out.
    Most of the panels pop out, but it takes a lot of planning to pop back in.

    I drove about 120 miles this morning and there is definitely a different tone from the engine.
    Accelerating uphill from 55mph to 63mph in HV, the "angry bees" reminded me of a 1984 Dodge Omni from 34 years ago.
    Just hit 11k miles in 4 months. Mostly turnpike miles, so the engine is fairly broken in.
    I do hear more engine sound and road noise coming through the firewall and floor.

    I have already added dynamax type mats to the hood and front passenger door so far.

    More updates to follow...
     
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  20. MPower

    MPower Well-Known Member

    I'll second that! I am running on Micheline X ice winter tires.
     
  21. As a single data point, yesterday we were driving 70 mph on a moderately rough “macadam” surface in S GA. Aggravating the noise was about a 15-20 mph headwind.

    In another post I mentioned an app I downloaded for my iPhone, DecibelX. I don’t know how accurate it is, but it showed 82db under the above conditions. Subjectively, it did seem loud. But to be fair, on smooth black asphalt the sound level drops dramatically.
     
  22. ClarityBill

    ClarityBill Active Member

    Fast:

    Any idea what ICE rpm's were? Was it in gear mode? (How much of it was engine noise?)
     
  23. I think the engine was virtually inaudible behind all the road noise. I could not hear any change in the noise level as the Energy display toggled through its various modes - taking energy from the battery, adding energy to the battery, gear mode, etc.
     
    Last edited: Mar 6, 2019

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