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Overview

The separation between the ultra-low power voice detection and the ADC is becoming essential in various applications to minimize the always-on circuitry (with no need of manual activation). Such a feature may be implemented either with analog microphones or with MEMS microphones. The WhisperTrigger for analog microphones is a voice detection feature for analog MEMS or Electret Condenser microphones with an interrupt signal as output combining the best rate of voice detection with the fastest detection time.

Benefits

  • Enables always-on listening mode while rest of the SoC (including audio converter) is turned off
  • Functional within various sound environments thanks to detection settings dynamically adjustable
  • Power consumption saving thanks to the low NDV avoiding to uselessly wake-up the ADC or the DSP
  • Suitable with voice recognition algorithm thanks to the low DL time

Applications

  • Remote control by voice activation
  • Smartphone and Tablet
  • IoT and wearable devices

Tech Specs

FoundrySMIC
Geometry nm55
Maturity Silicon Proven

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