Catalog of Voice Activity Detectors: WT-a-HD.02 TSMC 22 nm

Always-on Voice Activity Detection interfacing with analog microphones.


The WT-a-HD.02 is a mixed analog/digital Virtual Component (ViC) containing a Voice Activity Detection (VAD) engine for ultra low power applications.

Key Benefits

  • Voice activity detector enables drastic reduction in power consumption
  • Self-adjustment to background noise
  • Ambient Noise sensing


I want more information on WT-a-HD.02


  • Active headset
  • Car infotainment - Handfree car kit
  • Digital TV
  • Dock station - Wireless speaker
  • IP Camera and Security Camera
  • Set-Top-Box - Blu-Ray player
  • Smart home appliance
  • Smartphone - Audio handset

Key Performances

  • WhisperTrigger ensures 100% detection of vowels in less than 30% of the first phoneme
  • 97.7% of Voice detected as a Voice (VDV) within the first phoneme
  • 3.6% of Noise detected as Voice (NDV)
  • <10 uA of power consumption