Chapter 4: Voice Controlling LEDs with Edge Impulse
Keyword spotting (KWS) is a technology applied in a wide range of daily-life applications to enable an entirely hands-free experience with the device. The detection of the famous wake-up words OK Google, Alexa, Hey Siri, or Cortana represents a particular usage of this technology, where the smart assistant continuously listens for the magic phrase before starting to interact with the device.
Since KWS aims to identify utterances from real-time speech, it needs to be on-device, always-on, and running on a low-power system to be effective.
This chapter demonstrates the usage of KWS through Edge Impulse by building an application to voice control the light-emitting diode (LED)-emitting color (red, green, and blue (or RGB)) and the number of times to make it blink (one, two, and three times).
This TinyML application could find space in smart educational toys to learn both color and number vocabulary with peace of mind regarding...