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Low Speed Sound
updated 4 weeks, 1 day ago
42 Members
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76
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Does anyone actually know if Aptera will need a outside sound? Being an autocycle the rule might not apply.
As to having fun with it unfortunately NHTSA kinda killed that idea when they made Tesla recall boombox mode… I like the idea of simulating a loud engine just to mess with people but alas no dice on that.
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Pedestrians will ignore it just as they do now. I first put a beeper in parallel with one of the reverse lights and it was ignored. I then installed a Wolo BA-70 that says “Attention please! This Car Is Backing Up!” They STILL ignore it! Too bad I can’t change it to say “Get your fat ass out of the way!”
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This reply was modified 3 months, 2 weeks ago by
Dennis Swaney.
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I saw something from the myth buster interns (I think the show was called “white rabbit”) where they found to really get peoples attention you use a white noise generator.
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White rabbit project. Great show. Think the episode was something like most annoying technologies.
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This reply was modified 3 months, 2 weeks ago by
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Of course, you can never go wrong with the playing card in the spoke trick.
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Honestly I prefer no sound. But if I had to choose.
Old school – Nausicaä’s Insect Charm Sound
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Raj, to each their own, but I can say for myself, that may be the most irritating, annoying sound I could think of, and I’ve thought of quite a few, good job. 😃
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Yeah, 10 sec and I was done
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Nice! Although, I’d use it as a backup sound rather than just the running sound. It’s a bit repetitive and whiney.
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Is this a serious discussion?
the motors aren’t whisper quiet and the tires on surfaces make noise.
I’ve passed many Tesla’s and sound just like and other car on the road
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Our brains learn certain sounds represent danger and others are mere noise through repetitive experience. We don’t consciously think about. The sound of ICE cars are known to represent potential danger. It will be years before EVs are prevalent enough to automatically register inverter whine as potential danger.
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The main problem is when you are in a parking lot with pedestrians walking (many times deliberately) behind cars backing out of a space and oblivious ones sauntering down the middle of the lanes. At the higher speeds on streets and highways, then yes there is road noise (which pedestrians still ignore).
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Alas, this is a serious topic.
In Switzerland at least, electric cars must make noise when driving at low speeds. I’m looking into what the specs are, but the idea is that people are accustomed to hearing ICE, and therefore won’t hear a slow moving electric car.
I personally find this irritating and particularly ironic (if not moronic), because we have reduced speed limits due to noise, particularly at night (30 kph, ~20mph) in some areas (even on main roads !).
Also, as most pedestrians seem to have their concentration locked on their mobile device and are oblivious to their surroundings, I’m at a loss to explain how making noise will help. Noise pollution is harmful too !
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Clearly, the sound of a Wright R-3350 on a Skyraider “Spad” idling at reduced volume works for me.
Pedestrians may actually look up from their iPhones.
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Is this the sound other people hear as you drive by? Or what you hear in the cabin?
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It is really hard to take the NHTSA ruling seriously. The only way that ANY EV driving under 20mph can be heard by pedestrians (whether they be blind or simply wearing bluetooth earbuds) is to have the EV produce sounds that can be heard over the sound of the kid down the street with a 5000 Watt sound system in his hatchback thumping out rap music (or hip-hop, heavy metal, pop, country, polka, pick the genre) that can be heard 10 blocks away!
My 2015 SMART EV also has that stupid sound generator and I can’t even hear it because I’m hard of hearing. The electric air conditioning compressor makes more noise than the sound generator.
I think it would be ironic to get written up with a moving violation because my car is too quiet. Especially since the police around here rarely enforce state laws about loud audio and exhaust systems.
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Why can’t NHTSA think things through. If they believe that a low speed should is a necessary safety measure then why haven’t they specified the sound? Either you have one sound for all cars or you allow many sounds but this half way measure that takes choice away from consumers but not from manufacturers make no sense. I can see the benefits of having a standard sound, it will be easier to train service dogs to react to a specific sound and potentially even normal people would be more attuned to a standard sound. On the other hand if their research shows that it’s just having a sound, any sound, at a specified volume is all that matters what’s the difference between having potentially dozens and maybe even hundreds of manufacturer selected sounds and allowing consumers to pick their own sound as long as it’s always played at the specified volume.
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@Joshua Rosen – if you look at the actual ruling, it’s very specific about volume and frequency range, along with other details. https://www.law.cornell.edu/cfr/text/49/571.141
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How about one of these:
1. Hooked on a feeling (specifically the Uga Chaka Uga Chaka refrain)
2. A continuously rising or falling tone (Shepard Tone)
3. The sound of a Tie FIghter, X-wing, or other Star Wars spaceship flying past
4. Nelson Munz (The Simpsons) saying “Ha Ha!”
5. An angelic chorus saying”Ahhhh!” like the meme of a heavenly beam of light shining on something and attracting your attention
Of course, have the option to change back once that sound annoys you too much
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It should be user configurable. Like the ring tones on your phone. Just select an MP3 file and you are good to go.
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I really want the Jetson’s sound but many other great sounds in this thread too. The cards in the spokes would probably be a very good sound for many reasons.
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This reply was modified 1 month ago by Bart Cunningham.
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This reply was modified 1 month ago by
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The noise box on my I-MiEV is useless. So was the one on the Bolt. I’m glad my Tesla is naturally silent.
The best attention getter is a loud radio or fist bumping the bottom of the steering wheel. The bass thump reverberates through the front end of the car and pedestrians hear that. I was really a fan of the horn chirp used on the EV1 and Volt, silent until needed. The I-MiEV has an old-fashioned horn button that allows rapid, short horn button presses to just barely chirp the horn (see the video). I mostly do this to get the attention of squirrels while not bothering people in houses.
Whatever Aptera chooses for noise, please make the noise box a separate module that can be trivially unplugged.
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Trek (USS Aptera 2023): https://www.youtube.com/watch?v=V0zQHNmz0gU
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Would be great if we can have a graphics guy illustrate
Star Ship Enterprise morphing into an APTERA
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The low speed sound was not created for driver amusement, but rather for protection of the visually impaired. Fortunately, THEIR lobby has caused the government to lock in the sounds so that they will always recognize what they are hearing. We will have to play other ways with our toys.
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I learned quickly with a Wolo BA-70 on my Prius that pedestrians ignore warning sounds. Heck, they ignore the engine sounds of my diesel Jetta and my gas Miata!
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This reply was modified 4 weeks, 1 day ago by
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This reply was modified 4 weeks, 1 day ago by
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The Silly Walks Song (Live Mostly) – La canzone delle cammiante beote – YouTubehttps://www.youtube.com/watch?v=OHXA260DSS8 I would throw down $10 for a silly walk sticker included.
