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Now Available: Innovators Under 35 2013 See The 2013 List »

Parham Aarabi, 29

Sharpening a computers listening skills

University of Toronto

Computers have difficulty doing what the brain does easily: concentrating on one voice while ignoring other sounds. University of Toronto electrical-engineering professor Parham Aarabi created an algorithm that calculates the difference between the times at which a sound reaches two closely spaced microphones. Based on the delay, the software can determine the direction of speakers and amplify the speech of any one of them; all other conversation is reprocessed into a slight hum. Aarabis invention, which is 30 percent more accurate than other multimicrophone systems, could filter out extraneous voices in cell-phone conversations or enhance voice control in cars.

2005 TR35 Winners

Parham Aarabi

Sharpening a computers listening skills

Regina Barzilay

Teaching computers to read and write

Stewart Butterfield

Building communities through photos

George Candea

Protecting software from crashes

Bryan Cantrill

Tracing software in real time

Andy Carvin

Bringing Internet power to the have-nots

Narashima Chari

Setting the mesh networking standard

Bram Cohen

Upending the file-sharing world, bit by bit

Dennis Crowley

Moving online socializing into the streets

Tracey Ho

Scrambling bits for a more efficient Internet

Samuel Madden

Simplifying wireless sensor nets

David Pennock

Predicting the future of markets

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