Tom Pirelli pads around his suburban home talking to himself, a small gold-toned plastic device attached to one ear.
Light fills the room.
His stereo complies. Now for the hard part. He and partner Jim Alland will introduce their Vernon Hills company's first product Saturday at a national trade show. Called ArialPhone, it applies the technology Pirelli uses in his home to the telephone. The product manages incoming calls and dials, by name or telephone number, on spoken command.