Hands-Free Home Automation with Dual Microphone Array


To support completely hands-free home automation, Li Creative Technologies (LcT) has developed a dual microphone array solution for robust voice capture. Without using a remote, a user utters voice commands from 4 meters away from any smart home device, and our solution reduces background noise; cancels sound from a home entertainment system; and outputs clean speech for speech recognition. Consequently, a user can control lighting, appliances, entertainment, security, or other smart home functions through voice command with high accuracy despite noisy conditions and sounds from a home entertainment system. Our system enables video conference, speakerphone, voice control and search of smart TV, and information query.

LcT also provides a voice biometric solution for control panel access, to lock/unlock doors, etc.

Technical Description

LcT’s solution utilizes our advanced audio signal processing algorithms invented from a study of the human hearing system, including far-field microphone array, adaptive beam forming, adaptive radio sound cancellation, and noise reduction. Our technology can improve speech recognition accuracy from 40% to over 90% when the TV or radio is on.


  • Hands free
  • Remote free
  • No need to turn off sound from TV or home entertainment system
  • Enables voice control, video conference, speakerphone, voice interaction, voice search, and information query

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