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Can Tesla do rudimentary noise cancellation?

TesLou22

Member
Feb 21, 2015
57
50
Fl
Do you think the hardware exists (speaker setup and mic) that Tesla could combine with some fancy digital signal processing to offer some level of highway noise cancellation?
 
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Shadnic

Member
Feb 8, 2019
160
59
San Diego
I wonder if that's considered safe? You need to be able to hear things like ambulances/sirens/honking/etc. I know cars are already well sound insulated and that's considered fine, but I can imagine people getting bothered by the idea of digitally enhanced noise cancellation in a car.
 

TesLou22

Member
Feb 21, 2015
57
50
Fl
I wonder if that's considered safe? You need to be able to hear things like ambulances/sirens/honking/etc. I know cars are already well sound insulated and that's considered fine, but I can imagine people getting bothered by the idea of digitally enhanced noise cancellation in a car.
Good point. Maybe AI/ML can drown out highway humm but allow siren sounds etc. to be heard clearly??
 
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Dan203

Active Member
Jul 10, 2019
1,418
953
Northern Nevada
There are companies that offer noise canceling solutions for cars, but it's only partially effective. It can cancel constant droning noises like the engine, HVAC fan, tires, etc... but doesn't do great on dynamic noises like exterior sounds.
 

tvad

Member
Jun 30, 2019
979
971
California
There are companies that offer noise canceling solutions for cars, but it's only partially effective. It can cancel constant droning noises like the engine, HVAC fan, tires, etc... but doesn't do great on dynamic noises like exterior sounds.
^This. Noise cancellation eliminates constant noise. It can eliminate or reduce tire noise, wind noise, engine drone (if a car has it), but it won't eliminate sound "spikes" like horns, sirens, etc.
 

Dan203

Active Member
Jul 10, 2019
1,418
953
Northern Nevada
There's a mic and a sound system so it may be possible. That might help with some of the road and tire noise in the M3.

You can’t really cancel noises you pick up on a mic inside the cabin because at that point it's too late. You could maybe generate some generic profile of things the mic hears and generate similar reverse frequencies, but that wouldn’t be super affective and could actually introduce noises into the cabin.
 

lolder

Member
Jun 11, 2016
889
676
SW Florida
You cannot "cancel" them but you can reduce some of them. Lower frequencies like tire/road noise are the easiest. It's tricky do do but has been successfully done. It's done with inside mics.
 

phillcom3

Member
Jul 27, 2019
566
105
preston
I wonder if that's considered safe? You need to be able to hear things like ambulances/sirens/honking/etc. I know cars are already well sound insulated and that's considered fine, but I can imagine people getting bothered by the idea of digitally enhanced noise cancellation in a car.
you could just limit the frequencies cancel to those in the spectrum around road noise not the sirens etc? they are one ofs and specific frequencies that could easly be ignored.
 

JulienW

Active Member
Jul 7, 2018
2,565
2,783
Atlanta
My Cadillac ELR had active noise cancelation and is was SOOOOOO much quieter at highway speed. Almost no wind or tire noise. Do miss that.
 

JulienW

Active Member
Jul 7, 2018
2,565
2,783
Atlanta
I wonder if that's considered safe? You need to be able to hear things like ambulances/sirens/honking/etc. I know cars are already well sound insulated and that's considered fine, but I can imagine people getting bothered by the idea of digitally enhanced noise cancellation in a car.
That is not how active noise cancelation works. It looks for constant repeated pattens like wind and road noise and works best in med to lower frequencies.

When it spots a pattern it plays the same "noise" but 180º out of phase so the waves cancel each other out.
 

Uncle Paul

Well-Known Member
Nov 1, 2013
6,164
6,663
Canyon Lake,CA
Elon says the best way to reduce noise would be to allow cars to use ourside cameras instead of noisey mirrors. Would also increase efficiency and range.

They already put foam in the tires to reduce low frequency thumping noise.

I noticed the new adaptive suspension on the Raven also has a benefit of quieting down the sound from the road.

Active noise cancelling is something that others have done. It is relatively available and effective.
Uses microphones to activate counter noise from the radio speakers to cancel out noise.
 

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