Road/Wind noise dB readings

I spoke to the guys at dynamat and ask if they where going to make a kit for the prius they said they had received a few inquiry not they need a car they car make templates and test with and it would take about 6 mouths to a year to do.
This was over the summer so maybe they got one to use.
My buddy who owns a stero shop uses this stuff was thinking of haven him put it in the doors.One other thing some jeep guys sware that rino lining the under cage quits down there jeeps.

 

Using the Decible 10 app in my 2013 Prius plus w forged rims and low profile tires, TRD rear sway bar, TRD springs, Cusco rear, mid, front and strut bar and ultra racing rear strut bar my dcbl count on a smooth freeway at 60 mph was an astonishing 92 to 99 dcbls
Yes the Cusco frame stiffers really transmit road noise.

 

Where did you read 0 mph? That is not what I said. Please re-read my post. What I said was "there was no wind to speak of". That is a little different than 0 mph.

When a flag on a flag pole is not moving I do not consider that enough wind to make a difference in dB noise levels.

 

I was thinking the same thing. Maybe I'll try another Db app to compare

 

I used the decibel 10 app last night and had a reading of 84 dcbl @ 80mph. A few factors can change ones personal experience from the tires, wind direction, surface of the road but I'll soon be taking my baseline and doing a full butyl sound proofing install.

 

here are my readings on the fruitphone decibel 10 app today and got 88 dcbl @ 75mph on fairly windy day on i5 near Ortega highway in SoCal. no roof rack or cargo box / hitch

Road was very rough. I don't think the phone mic is meant for this. In order to get a proper reading we may need to break out an analog sound meter that some audiophile may have laying around.

I hear a big difference from what it was before and definitely worth the effort to do it yourself. You'll get the spots that a hourly installer may miss. I plan to finish the car by doing the full floor and wheel wells. Then add some braces and shocks.

Only change is "$ynamat" sound deadening:
*4 doors fully covered (inside of the interior and exterior shells, the round cross beams, all flat areas, completely around speaker housings, and on the insides of the door panels as well.)
*Spare tire area
*both rear quarter panels and all beams
*area around the battery (not on)
*under rear seat *trunk hatch
*on all the plastic panels on top of the spare tire area.

 

It really is all relevant since I listen to the radio at max anyway.

 

So true!!! You're going to hear / notice road noise more in a Prius, hell none of us bought these cars because of how they sound great or handle on turns at a high rate of speed. We bought them because of the gas mileage. If someone does not want to hear the road noise turn up your favorite tunes!! or install "$ynamat"

 

I assume you mean "irrelevant"?

What I noticed after some basic sound dampening is now I don't need to turn up the music as high. That was to compensate for the road noise. Pretty simple, if the car is quieter then I don't need to turn it up as loud. Also, I noticed it's easier to have a conversation too!

 

I will have to do another measurement again to see my reading match what I notice. After sound dampening, car is def. quieter overall.

based line I have is average of 78 db on the freeway. That's no where near your 70 db but different app(im using Decibel 10th) and different roads.

 

I just downloaded the "Decibel 10th" app and am using the built-in mic on the iPhone. Sitting in the office it is in 44-59 (depending on when the a/c kicks on and people talking). I know the tires and road surface types play a role but I'm going to capture some data points in the car just for the heck of it.

The Price of Quiet Driving – A Noise Study of 35 Passenger Cars | Elevating Sound | Sound, Acoustics, Noise, Audio, Soundscape, Sonic, Quiet, Silent, Tinnitus