Comments on: Toyota Crown Hybrid features active noise control

By: zerachiel1986

zerachiel1986 — Fri, 25 Jul 2008 05:30:28 +0000

to Porkbutcher,

yes,got mine two weeks back,car is superb !!

By: mitlanevo

mitlanevo — Fri, 25 Jul 2008 03:22:06 +0000

is this the same tech used in aircraft?

By: Porkbutcher

Porkbutcher — Thu, 24 Jul 2008 17:37:40 +0000

Bravo zerachiel. U own a new V6 accord? I know that the V6 has noise-cancellation in the cabin and this kinda thing is for the premium cars…

By: zerachiel1986

zerachiel1986 — Thu, 24 Jul 2008 13:22:23 +0000

doesnt the latest honda accord has the same technology,as i have experienced on my new honda,when the going on “ECO” mode a.k.a 3 cyclinder activation,the stereo system kinda goes odd,only few noticed it…..

By: mokkf82

mokkf82 — Thu, 24 Jul 2008 12:15:30 +0000

I would rather want woofer to boost some bass sound of my audio instead of using it as noise cancellation speaker.
We can always put something like sound insulator at the engine bay or the side door or even the hood…..
But one thing scares me, does cars loaded with wires will naturally get short circuit and burn out the whole unit just like the house?
scary…

By: noactiontalkonly

noactiontalkonly — Thu, 24 Jul 2008 12:12:24 +0000

mystvearn said,
July 24, 2008 @ 5:38 pm

You know for certain this is a disastrous idea. Imagine if the mic rosak then you get augmentation of sound in your cabin non stop. Something too complex is just bound to get faulty…
—————————————————————-
don’t be too judgemental. this concept has been in practice for years, maybe toyota took longer time to reach production due to their characteristic cautiousness on the reliability of new tech. so they won’t gamble their reputation (and customers’ trusts) by applying half-cooked tech in production.

By: noactiontalkonly

noactiontalkonly — Thu, 24 Jul 2008 11:55:42 +0000

mystvearn said,
July 24, 2008 @ 5:38 pm

You know for certain this is a disastrous idea. Imagine if the mic rosak then you get augmentation of sound in your cabin non stop. Something too complex is just bound to get faulty…
Hikaru said,
July 24, 2008 @ 11:17 am

Sounds a bit like cheating to me by “tricking” the brain into thinking there is less noise.

What happened to the traditional method of more insulation and more engine refinement?

Interesting. Perhaps they have come to the limit on the traditional method and taking things one step further? Surely there is more from the traditional methods. Perhaps this is cheaper?
—————————————————————
I noticed from the diagram that the input to controller consists of engine signal and feedback loop from microphones. and from paul’s statement i can’t read any claim that this system is intended to compensate for the ambient noise. therefore i believe the main input to controller comes from the engine bay, not from microphones (the mics are just to compare the output vs target for continuous adjustment). if the mics are faulty, there shouldn’t be any serious effect, as far as i can think.

Convensional insulation materials contribute significantly to the weight of a car (and thus increase fuel efficiency), and the demand for comfort is always going to be higher. so this is better way to save cost in the long run.

By: JULIANLEE2

JULIANLEE2 — Thu, 24 Jul 2008 10:53:47 +0000

hybrid…pah

By: mystvearn

mystvearn — Thu, 24 Jul 2008 09:38:19 +0000

You know for certain this is a disastrous idea. Imagine if the mic rosak then you get augmentation of sound in your cabin non stop. Something too complex is just bound to get faulty…

By: farghmee

farghmee — Thu, 24 Jul 2008 07:46:32 +0000

if i’m not mistaken, active noise ctrl has already implemented in airliners.
using frequency (sound) to annihilate another disturbing frequency (unwanted sound). i forgot the term, but that is how it works.

i prefer passive noise ctrl- less maintenance & less electronics

By: repsoleo

repsoleo — Thu, 24 Jul 2008 07:06:13 +0000

i dont care much bout engine noise anyway. its always relative to car price…
more expensive less noise

By: BW

BW — Thu, 24 Jul 2008 06:37:22 +0000

i like quiet cars

By: skodian

skodian — Thu, 24 Jul 2008 04:09:50 +0000

This does not sound good for a car ICE fan. Anti phase sound has been developed in car ice years ago and it has impact of disturbing certain range of sound frequency. No good for good hifi.

By: knight_templar

knight_templar — Thu, 24 Jul 2008 03:29:23 +0000

instead of spending cost on developing sound deadening material (which is quite archaic) this is a rather intelligent way of doing the same thing. Plus, the technology can be pushed further.

By: Hikaru

Hikaru — Thu, 24 Jul 2008 03:17:00 +0000

Sounds a bit like cheating to me by “tricking” the brain into thinking there is less noise.

What happened to the traditional method of more insulation and more engine refinement?

Interesting. Perhaps they have come to the limit on the traditional method and taking things one step further? Surely there is more from the traditional methods. Perhaps this is cheaper?

By: Roti Naan

Roti Naan — Thu, 24 Jul 2008 02:58:57 +0000

2 words- Ear Plugs

By: ryan_foong80

ryan_foong80 — Thu, 24 Jul 2008 00:26:06 +0000

Cool….

By: maibatsu_thunder

maibatsu_thunder — Thu, 24 Jul 2008 00:13:47 +0000

Do these speakers double as sound system speakers or are they solely for the noise cancellation system?

By: chinen

chinen — Wed, 23 Jul 2008 22:06:33 +0000

Sweet.. i like Toyota Crown..