NXP Semiconductors’ Voice Intelligent Technology (VIT) library is a local voice-control software package with a complementary online training tool. Based on deep learning and speech recognition, the library provides a far-field audio front end supporting up to three microphones, an always-on wake word engine, and a voice command engine.
The VIT library’s online tool allows customers to define a wake word and voice commands themselves using simple text entry, eliminating speed the need for voice recordings. Other library features include:
- Support for different microphones topologies (no tuning required)
- Large vocabulary available for text to model
- Voice activity detection to minimize processing load during silent non-speech periods
- English and Chinese language support
For use with supported NXP devices, VIT software streamlines the implementation of reliable, on-device voice control by furnishing a flexible software solution that can be customized for specific applications. It is available royalty-free on several device platforms, including those based on Arm Cortex-M7, Arm Cortex-M33, Cadence Xtensa HiFi 4, and Cadence Fusion F1 cores.
The free VIT software is delivered as a ready-to-use library in the MCUXpresso SDK, an open-source software development kit. The online training tool is available here.
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