Intel Capital Ultrabook Fund Supports DNote Audio

Posted on 30 May 2012 By


Trigence Semiconductor has just received funding through the $300m Intel Capital Ultrabook fund for their DNote Audio technology. Dnote is a technology that drives analogue loudspeakers found in consumer electronics via digital signals to lower power requirements. Actually, looking at it, it seems that Trigence have developed a new speaker coil technology.

DNote

Trigence, a Japansese company, will take an undisclosed sum from Intel Capital to further develop DNote Audio.

From the company website [PDF]:

We have been developing an unique digital signal processing
technology that capable to realize full-digital speaker. Since
first press release at May 2008, we have exchanged NDA with
over 25 domestic/foreign companies and already licensed
some of them. Dnote is promised technology that could
drastically reduce the speaker power and achieve large SPL
under low supply voltage. we are working to accelarate the LSI
production.

Taking a closer look at the image you can see that the digital to audio converter has been incorporated into the speaker driver. One can only assume that the power equation on the right results in less that the one on the left! Obviously having an all digital path can reduce interference and improve signal quality too but quite how much of that is relevant on 20mm speakers is not clear!

How much power is this going to save? We’re talking milliwatts here, possibly just tens of milliwatts but that’s what it’s coming to know. Every milliwatt saved is longer battery life.

Via Eetimes

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  1. #1 by Robert on May 30, 2012 - 18:08

    what would this new technology actually do, is it all about having found a way to be more energy effient in the build of laptops due to lower energy consumption or is there some benefit in terms of somehow edhanced sound part of it all to?

    • #2 by DavidC1 on May 31, 2012 - 05:36

      Both. Direct driving analog audio using digital signals supposedly allows for higher sound quality while using lower power.

  2. #3 by robert on May 31, 2012 - 10:51

    that´s very welcome then :)

    • #4 by Chippy on May 31, 2012 - 16:04

      As in my comments though, it’s not a huge power saving and the increased quality is probably not going to be heard through the tiny speakers on Ultrabooks.

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