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Bert22306
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re: Silicon Valley Nation: What should your EV sound like?
Bert22306   1/10/2013 11:58:35 PM
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First of all, it's not clear that lack of noise from EVs had any impact on the fatality stats posted in the article, is it? But more to the point. Electric motors under load have their own wonderful growling-whining sound. My suggestions is, don't mess with it. If anything, just amplify the sound some, at low speeds, if pedestrian safety is a real concern. And it would be best to allow each manufacturer to tune the sound of their own products, same as they do with ICE exhaust systems.

krisi
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re: Silicon Valley Nation: What should your EV sound like?
krisi   1/10/2013 11:44:28 PM
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well, there is always a possibility of running into a person crossing the street that doesn't hear the car coming

elizabethsimon
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re: Silicon Valley Nation: What should your EV sound like?
elizabethsimon   1/10/2013 10:19:04 PM
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I think that the most practical in terms of being easy to distinguish would be some sort of pulsing tone where the pulse rate increases in frequency as car speed increases. Also important, I think, would be a smooth transition to where the sound turns off. I also agree that some sort of standardization is needed with perhaps some options as to the tone frequencies chosen

Willpower99
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re: Silicon Valley Nation: What should your EV sound like?
Willpower99   1/10/2013 9:42:48 PM
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Why can't radar sensors on the front and rear of the car be a solution instead? Otherwise I vote for the sound of the WARP engines from Star Trek.

l_rasmus
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re: Silicon Valley Nation: What should your EV sound like?
l_rasmus   1/10/2013 8:51:44 PM
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It is blind people who pushed for these minimum sound requirements. I am a blind engineer, and know that this problem has been under discussion for more than 10 years. In Montgomery County, Maryland, pedestrian safety campaigns recommend that pedestrians "make eye contact" with drivers. Good luck getting me to do that. Sound from an "idling" car is just as important as from one in motion. As much as possible, we need to be able to hear vehicles which may collide with us as we cross streets. I think manufacturers are going to be sensible about the sounds they select; a lot of groundwork has already been laid.

any1
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re: Silicon Valley Nation: What should your EV sound like?
any1   1/10/2013 8:40:07 PM
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I agree Big Paul. Don't we have enough noise pollution already without adding more? This is a bad idea. Are "quiet" EVs currently on the road grandfathered out of this requirement?

GMF
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re: Silicon Valley Nation: What should your EV sound like?
GMF   1/10/2013 8:04:15 PM
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An EV (or all vehicles) should make noise iff there's a possibility of running into something.

Brian Fuller2
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re: Silicon Valley Nation: What should your EV sound like?
Brian Fuller2   1/10/2013 7:41:57 PM
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@Big Paul, personal responsibility? What? That's so old school! ; ) Thanks for commenting!

krisi
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re: Silicon Valley Nation: What should your EV sound like?
krisi   1/10/2013 6:19:10 PM
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Perhaps we need some specific standards for this noise...otherwise everyone will play a different tune like in cellphone rings...specifying the dB levels in not sufficient...people need to know it is car coming!

JollyPaul
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re: Silicon Valley Nation: What should your EV sound like?
JollyPaul   1/10/2013 5:54:09 PM
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If we are going down this road, then the new regulations need to apply to all vehicles, regardless of how it is powered (gas,EV,pedal power). Personally I think it is just a knee jerk reaction to new technology. People need to be aware of their surroundings and take responsibility for themselves. If you are clueless enough to walk in front of a moving car because it is not loud enough, Darwin will see you to the exit door soon enough for a cause unrelated to EVs.

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