Thanks. The rest of your message provides a great framework for what I wanted to add.Very interesting point! Well worded and concise too!
Well my Y went in for service yesterday. Tech had me take him on a test drive, where I heard it (though of course not as loudly as I have in the past), but he didn't. He said they can't fix anything they can't hear. But I still showed him a printout of my "report" and explained as best I could that the Y seems to have a resonant frequency that's lower than my 3 and in a range many people find uncomfortable (vs just normal road noise/rumble). He listened, and said that he would scan and forward the report to Tesla engineering. When I got the car back (also had Homelink installed), he said he had scanned and forwarded the report.OK. I'll buy what you are saying. So how can I prove to Tesla that I have an infrasonic sound problem?
So that's one way to give feedback. I'll see if I can forward my report and this thread to other departments at Tesla. If others do the same, Tesla might take notice and address it.
Well my cell phone microphone certainly caught it - you can see it in the graphs I posted. It doesn't go below 20Hz, but you can assume the "left" side (below 20Hz) drops off roughly like it's mirror image to the right of the peak, a typical resonance waveform.I downloaded several infrasound apps on my phone and compared my Tesla to a Ford and a Buick and got the same results. What I have read on this forum is that cell phone microphones can't capture infrasound (I don't understand why). How can I prove it?
I'm not sure how (or how well) the apps you tried work...if they work on iPhone tell me which ones and I'll check them out.
No, it's still consistent. For something to resonate, it needs to have energy added to it (if nothing is moving there is no noise). In this case, things that add vibrational energy (basically anything that shakes) are road noise, bumps in the road, compressor turning on/off or even just running (if it vibrates while it's running), and a "loose" hatch will add more energy than an adjusted hatch that doesn't move as much when it encounters a bump or a rough road.But here is my argument against what you are saying. The problem was definitely worse before I adjusted the hatch. In that case, the theory is that when I drove over a bump, the hatch bounced, creating a pressure wave. In that case it isn't infrasonic sound, rather it is just a single pressure wave, right?