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Nissan Presents Leaf Sound for Pedestrians...

Posted: Fri Jun 11, 2010 4:08 am
by sparky
I guess we can hear this next week.
http://www.autoevolution.com/news/nissa ... 21303.html
Aside for the Leaf itself, Nissan will showcase the Approaching Vehicle Sound for Pedestrians, which will be first featured on the Nissan Fuga hybrid this fall. The sine-wave sound system sweeps from 2.5kHz at the high end to a low of 600Hz. The sound emitted by the system is louder when the car starts, it is released as an intermittent sound when the car is in reverse and is disengaged when the Leaf exceeds 30 km/h (18 mph).
Also here: http://blogs.edmunds.com/greencaradviso ... odels.html
Nissan said in a press release late Thursday that the sound system "will make sweeping, high-low sounds" that will be loudest when the car is started and will be generated intermittently when it is backing up.

The EV sounds are generated by a synthesizer located in the dash and broadcast via a loudspeaker in the front of the car (the engine compartment on a conventionally powered vehicle).
And here: http://finchannel.com/news_flash/Oil_%2 ... xperience/
Depending on the speed and status (accelerating or decelerating) of Nissan LEAF, the sound system will make sweeping, high-low sounds. For instance, when Nissan LEAF is started, the sound will be louder, so a visually impaired person would be aware that a nearby car was beginning operations. And when a car is in reverse, the system will generate an intermittent sound. The sound system ceases operation when Nissan LEAF tops 30km/h and enters a sound range where regular road noise is high. It engages again as Nissan LEAF slows to under 25km/h.

The system is controlled through a computer and synthesizer in the dash panel, and the sound is delivered through a speaker in the engine compartment. A switch inside the vehicle can turn off sounds temporarily. The system automatically resets to "On" at the next ignition cycle.

Re: Nissan Presents Leaf Sound for Pedestrians...

Posted: Fri Jun 11, 2010 4:37 am
by LTLFTcomposite
the sound is delivered through a speaker in the engine compartment.
...hand me those wire cutters

Re: Nissan Presents Leaf Sound for Pedestrians...

Posted: Fri Jun 11, 2010 5:45 am
by adric22
LTLFTcomposite wrote:
the sound is delivered through a speaker in the engine compartment.
...hand me those wire cutters
I agree... But I am at least thankful that they designed it to be turned off temporarily.

Re: Nissan Presents Leaf Sound for Pedestrians...

Posted: Fri Jun 11, 2010 7:17 am
by garygid
Maybe we can find a way to hook up a microphone and pre-amp as an additional input to this speaker's amp to have a front-facing PA system?

If the speaker is in front, and the sounds can be heard to the rear when the car is backing up, then the sound is likely to be OBJECTIONALLY LOUD inside the cabin?

Re: Nissan Presents Leaf Sound for Pedestrians...

Posted: Fri Jun 11, 2010 7:33 am
by Gavin
as long as i can change to sound to say "Hey Good Lookin', I'll be back to pick you up later" http://www.youtube.com/watch?v=CYEXBTlW ... _embedded#
30 seconds in....

I'll be happy

:)

Gavin

Re: Nissan Presents Leaf Sound for Pedestrians...

Posted: Fri Jun 11, 2010 8:00 am
by garygid
Since the sound varies with startup, direction, and possibly speed, it is likely to be a real-time microprocessor-generated sound instead of a "recording" file (that one might possibly change).

But, maybe the ยตP will be re-programmable (though probably not), or at least replaceable.

It will have to tie into the car network to get speed, rev/fwd, "starting", etc. status.

It could be integrated such that the car will not run without properly "talking" to it.

The best news is the switch to turn it off (for regions that do not require this "insane" noise-maker, of course).

Nissan Reveals the sound of the LEAF (VIDEO)

Posted: Fri Jun 11, 2010 8:07 am
by JTM5000
Nissan has unveiled the pedestrian alert sounds the LEAF will make, and can be seen in the videos:

http://nissan-leaf.net/2010/06/11/nissa ... -revealed/

Re: Nissan Presents Leaf Sound for Pedestrians...

Posted: Fri Jun 11, 2010 8:08 am
by Bicster
I'm sure it'll have a dedicated fuse... Just pull the fuse and the feature is off for good. Hopefully without a warning light on the dash ;)

Re: Nissan Presents Leaf Sound for Pedestrians...

Posted: Fri Jun 11, 2010 8:19 am
by evnow
Merged. thanks to JTM5000 for the link.

Sounds like a plane ...



The reverse is annoying ...


Re: Nissan Presents Leaf Sound for Pedestrians...

Posted: Fri Jun 11, 2010 8:26 am
by mwalsh
evnow wrote:Merged. thanks to JTM5000 for the link.
Seriously? That's really it? That has got to go!