Startup Doppler Labs is introducing some inventive technology designed to let users control and personalize their live listening experience --for instance at a concert or on a plane--by wearing wireless Bluetooth earbuds that are controlled by a smartphone app. The Here Active Listening System -- what the company also refers to as 'bionic ears' -- were unwrapped Tuesday morning on Kickstarter, though its development team has already attracted some high-profile investors, notably Hans Zimmer and Quincy Jones, who are communicating regularly with the team and providing development input.