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NWS706 Noise Cancelling

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cr4zyg00d

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I believe so, since the 4 and 2 gig models have Noise cancelling built into them, so the 706 and 705 models. the 603 models do not have noise cancelling option so you would not be able to use that feature with those units. I believe it is something that is built into the units and that is why the 2 gig and 4 gig models are more expensive than other comparable mp3 players I guess. Still the 1 gig 603s come with in ear canal head phones which is a bonus compared to other mp3 players on the market.

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hmm... i don't think they would use anything other than a standard 1/8'' headphone jack. based on the specs on sonystyle.ca they both have headphone jacks apparently, although it doesn't specify what type. using some weird type of jack that doesn't allow people to use their favorite pair of phones would be an odd move. the price difference between the models in question is definitely due storage capacity and different earphone models that come with the unit.

Edited by JazzyBananas
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If you guys bothered to read the mini-review in this forum at http://www.atraclife.com/forums/index.php?showtopic=2434 you would already have your answer.

The noise-cancelling circuit is on the device itself, not the earphones. The earphones simply include mic pickup to perform noise-cancelling. This line-in is provided through a special headphone jack that still regular headphone plugs.

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If you guys bothered to read the mini-review in this forum at http://www.atraclife.com/forums/index.php?showtopic=2434 you would already have your answer.

The noise-cancelling circuit is on the device itself, not the earphones. The earphones simply include mic pickup to perform noise-cancelling. This line-in is provided through a special headphone jack that still regular headphone plugs.

If you bothered to learn about how noise-cancelling worked, you would know that the headphones need a mic to receive transverse waves and another one to output waves that cause destructive interference.

In other words, the noise cancelling circuitry has to be inside the headphones. So I'm guessing the player activates the mic? It doesn't matter tho, b/c I've decided not to get it.

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I don't quite agree with cr4zyg00d. The built-in mics of the headphones pick the ambient noises and pass them to the mp3 player, and the circuitry inside the player process the signal to produce opposite waveform and then pass the processed signal back to headphones to cancel noises out.

I don't know if I'm correct, but at least that's what I see how this works.

Edited by ATRAClive
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as the matter of fact, the bundled phones can be plugged into any 1/8" jack too.

Not true. The phones use a special keyed pin with two extra contacts over a normal miniplug, at least in the case of my Japan-purchased 4GB gold NW-S706.

The phones are very comfortable and much more effective at noise supression than previous Sony NC phones I have owned. I first noticed this when using them on the JR Line in Tokyo. On my first long trip with the unit, a Nozomi Shinkansen run from Tokyo to Nagoya and back a couple days ago (window seat), I found them nearly as effective as my (foam-equipped) Shure E4C canalphones in terms of noise isolation, and 90% of the Shures in reproduction. However they were notably more comfortable than my Shures, as well as much faster to insert.

On my return flight from Narita to the US yesterday, sitting in a window seat just behind the engine on a 777, I did find the Shures provide more isolation at higher noise levels.

However, on the second leg of my flight, first-class in a 757, the included phones were more than adequate and as noted, more comfortable. Also a lot stealthier and less bulky than the big Bose NC phones nearly everyone else in the cabin was using ;)

As for battery life, I (accidentally) kept the unit running continuously from a full charge for a bit over 30 hours, from when I left Japan to when I arrived home in the USA and a subsequent 8 hours sleep. Running this way, with volume at 19, NC in the on position, and 60% ATRAC files at 128 or higher encodes, and 40% MP3 at high-rate encodes, in shuffle mode, the unit still had 1/4 remaining on the battery meter when I noticed it was on.

I suppose it bears mentioning that the FM frequencies on the receiver side of the unit are not too useful in the USA unless you enjoy NPR ;)

Might try to flash the firmware from a Euro unit once an update is released.

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