Voice Control

From homes to retail to commercial environments, NXP is enabling ubiquitous voice control

Voice control is becoming increasingly popular with both manufacturers and consumers. NXP has developed a range of solutions for adding voice control directly into any product. From flexible implementations to completely turnkey solutions, NXP offers scalable options from high performance microprocessors to cost-effective microcontrollers.

Why NXP for voice control?

NXP solutions are offering more accessibility to affordable technology with MCU-optimized, out-of-box acoustics, audio, and voice components featuring seamless connectivity and superior security options.

  • Fast time to market
    Fast time to market
  • Cost-effective and efficient
    Cost-effective and efficient
  • Best-in-class integrated security options
    Best-in-class integrated security options
  • Scalable and flexible MCU/MPU options
    Scalable and flexible MCU/MPU options
  • Last assistant features and capabilities
    Last assistant features and capabilities

Voice control market applications

Home

Smart Home

  • Home security
  • Faucet / Shower head
  • Fans
  • Thermostat
Smart Retail

Retail

  • Lock / Access control
  • Beacons
  • Kiosk / Vending machine
  • Lighting automation
Industry

Industry

  • Object detection
  • Safety monitoring
  • Machine monitoring
  • Process monitoring

Typical far field voice input system

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Microphone

Low-cost MEMS Microphone Array (one or more).

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Audio Processing

Digital signal processing to enhance wake word and commands recognition, locally and in cloud.

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Wake Word Engine

Machine Learning inference model to recognize the required wake word.

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Cloud Processing

Natural language commands are interpreted and understood, then produce an appropriate response.

Audio Processing Features

  • Audio streamer sends a few seconds of audio to the cloud for processing
  • Barge-in allows microphones to hear voice commands while music is played back
  • Beamforming combines multiple microphone signals to improve the quality of voice recognition
  • Direction of arrival determines direction that the voice is coming from, used in conjuction with beamforming
  • Echo canceller removes echo from the audio to improve voice recognition
  • Noise reduction removes background noise to further improve voice recognition
  • Playback processing optimizes loudspeakers for best possible sound