Intel Capital Ultrabook Fund Supports DNote Audio

Updated 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.


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

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

4 Comments For This Post

  1. Robert says:

    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. DavidC1 says:

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

  3. robert says:

    that´s very welcome then :)

  4. Chippy says:

    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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