Low-Power Voice UI with i.MXRT700

This video demonstrates how to build a low-power, voice-enabled application using the NXP i.MX RT700 microcontroller unit (MCU). It features use of NXP’s Voice Intelligent Technology (VIT) software for always-on voice detection using minimal power draw. The RT700’s dual digital signal processor (DSP) cores (HiFi1 and HiFi4) and Arm® Cortex®-M33 cores allow flexible power-performance optimization. The demo includes real-world power measurements and highlights how smart clocking and voltage scaling enable efficient voice processing for smart home and wearable devices.

Learn more about NXP's i.MX RT700 Crossover MCU that powers interactive consumer technology.

Highlights

Discover always-on voice detection using NXP’s VIT software
Learn about dual DSP architecture: HiFi1 for ultra-low-power and HiFi4 for flexible control
Get real-time power profiling: ~1.8 mW during HiFi1 processing
Uncover voltage scaling: DSPs run at 0.7V and drop to 0.5V in low-power mode
Explore how this solution is ideal for smart thermostats, switches and portable assistants

Resources

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