Hands-Free TV Voice Control with Dual Microphone Array


To support completely hands-free TV voice control and search, Li Creative Technologies (LcT) has developed a dual microphone array solution for robust voice capture. A user utters voice commands directly at the TV from a distance of 4 meters away, and our solution cancels TV sound and background noise and outputs clean speech for speech recognition. Consequently, a user does not need to mute the TV nor talk into a remote. [Listen to Audio Demo]

Technical Description

LcT’s solution utilizes advanced audio signal processing,  including far-field microphone array, adaptive beam forming, adaptive sound cancellation, and noise reduction. We integrate a two-sensor microphone array with our DSP algorithms. Our technology can improve speech recognition accuracy from 0% to over 90% when the TV sound on.


  • Hands free
  • Remote free
  • No need to mute TV

Sales and Licensing

LcT offers two product solutions for TV, set-top box, and control panel makers, speech solution providers, and home automation integrators: (1) a low cost, plug-and-play PCB module to replace the traditional audio codec unit. Customers do not need to do any hardware or software work. (2) ARM or DSP based software for a customer’s hardware platform. Business customers are encouraged to contact LcT for real-time demos and implementation. Contact: This email address is being protected from spambots. You need JavaScript enabled to view it..

Download Datasheet.