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Audience, a maker of voice processing technology that mimics the sort of audio processing that happens in the human brain, has announced its $15 million third round of financing.

We actually covered Audience’s unveiling in February, and first broke news on the funding, but the announcement fills out list of investors,and now includes Tallwood Venture Capital and VentureTech Alliance. We already mentioned Paul Allen’sVulcan Capital and New Enterprise Associates.

The Mountain View, Calif., company makes the A1010, a voice processor that can filter out noise and sharpen voice reception in cellular phone headsets. The company will use the money to accelerate its business growth.

The investment brings total funding amount to date to $45 million.

The A1010 groups and processes complex mixtures of sound and thus handles sound the way people actually perceive it and filter out noise. Trends in cellular usage will favor this company. Laws such as California’s upcoming law require cell phone users to use hands-free headsets while driving, but the quality of voice head sets is poor.

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