Overview
Description
Easy-to-use hardware platform for Voice User Interface (VUI) solutions based on the RA4E1 MCU.
This VUI partner-enabled solution is based on the RA family of 32-bit MCUs. The hardware platform is used for all VUI partner-enabled solutions provided by Renesas within the Renesas Ready Partner Network. It demonstrates how easy it is to control your system with a simple voice command interface without extensive coding experience or in-house expertise.
You will build an enhanced working solution that recognizes your own voice commands to trigger the corresponding operation using the Renesas Partner Network Solutions utilizing the Voice Hardware Platform.
Features
- Hardware Features
- Compact VUI solution using RA4E1. Small 10mm x 10mm size to fit into the end product.
- Local voice recognition algorithm, no network connectivity needed.
- Choices of digital and analog microphones are populated for alternative input options.
- External QSPI flash memory enhances storage for voice samples and library data.
- Cyberon DSpotter (PDF) Enabled Features:
- Global language support of 40+ languages worldwide.
- Support voice tag function to let a user change command by voice recording.
- Support voice response function for acknowledge and enhancing user experience.
- DSMT tool supports wake-word and commands customization, performance tuning, testing, no prior neural network knowledge needed.
- Low Bill of Materials (BOM) cost and footprint. The minimum requirements are the MCU, one DMIC, and a power supply.
Applications
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Edge Voice User Interface (VUI)
Voice control with RA MCUs offers efficient, network-free voice recognition for smart devices.
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Additional Applications
- Network‑independent endpoint VUI for edge applications
- IoT devices
- Home appliances
- Wearable/Hearable devices
Documentation
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| Type | Title | Date |
| Manual - Development Tools | PDF 554 KB | |
| PCB Design Files | ZIP 168 KB | |
| Quick Start Guide | PDF 1.14 MB | |
| Brochure | PDF 3.63 MB | |
| Flyer | PDF 656 KB | |
| Flyer | PDF 412 KB | |
| White Paper |
PDF
794 KB
This Design Journey demonstrates how to integrate Renesas RA6/4/2 MCUs with Cyberon DSpotter Voice UI technology to create a local, non-connected speech recognition solution for LED-based light bulb control. By designing a simple circuit and accompanying software, this guide highlights the ease, efficiency, and maintainability of incorporating Voice UI into your product using the RA6 Voice Kit.
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| White Paper |
PDF
441 KB
Traditional voice or speech recognition technology is based on a trained model with specific words or phrases. Natural language processing is word-order independent. This requires large computing power to run the real time data through a neural network. The Cyberon approach is different, allowing the algorithms to run on a small, general purpose MCU.
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| Flyer | PDF 508 KB 日本語 | |
9 items
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Design & Development
Software & Tools
Software & Tools
| Software title
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Software type
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Company
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| Cyberon DSpotter Provides local voice trigger and command recognition with robust noise reduction. Consumes very low resources while delivering high-accuracy performance. Runs on Renesas RA microcontroller unit (MCU) family, RX671, and RX72N, supporting multiple languages, connectivity functions, and security capabilities depending on the selected MCU. Enables offline operation without cloud connectivity for privacy and reliability.
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AI | Cyberon |
| RA Flexible Software Package (FSP) FSP is an enhanced software package designed to provide easy-to-use, scalable, high-quality software for embedded system designs using Renesas RA Family of Arm Microcontrollers.
Note: FSP with e² studio Installer (Platform Installer) will install the e² studio tool, FSP packs, GCC toolchain, and Segger J-Link drivers required to use this software. No additional installations are required.
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Software Package | Renesas |
| Reality AI Utilities Round-trip workflow for AI development and performance validation allowing to collect data, optimize models, and deploy directly to Renesas hardware
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Solution Toolkit | Renesas |
| Spoken Language Understanding Local AI–based Spoken Language Understanding (SLU) model recognizes predefined key phrases with support for over 1 million phrases. Enables flexible grammar and vocabulary definition, allowing voice commands in varied formats to be accurately interpreted. Delivers 98%–99% accuracy with ~200 ms latency for fast, reliable response. Uses a customizable 400–600KB model. Runs on Cortex-M3, RISC-V, and low-power NPU. Robust in noisy and far-field conditions with low false triggers. Supports EN, CH, JP, and KR for appliances and wearables.
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AI | Aizip Inc. |
4 items
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Sample Code
Product Options
| Part Number | Status | Stock | Sampleable | Key Features | MCU/MPU | Additional Features |
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| TW001-VUIA4E1POCZ | Active | Out of Stock | Available | Command Recognition | RA4E1 (Arm CM33, 100MHz, 512KB/128KB/8KB, 48QFN) | 1xDMIC, 2xAMIC, Half-QSPI, USB-C/B, UART, DAC AUDIO OUT, 2xOP-AMP, J-Link Segger |
Videos & Training
Voice recognition systems often struggle with background noise, leading to user frustration. Discover how the Renesas audio combination application solution integrates audio pre-processing and voice command recognition to deliver improved accuracy and enhanced reliability, even in noisy environments.
Additional Videos
Events & Webinars
News & Blog Posts
Partners
Zephyr Project
The Zephyr Project is an open-source, scalable real-time operating system (RTOS) designed for resource-constrained embedded systems and supports a wide range of hardware architectures and development boards. For the Renesas RA4E1 Voice User Demonstration Kit, Zephyr provides focused documentation covering board features, supported peripherals, and basic build, flashing, and debugging workflows to help developers quickly get started.
See the Zephyr Project RA4E1 Voice User Demonstration Kit Documentation
Resources
Support
Knowledge Base
- Voice Kit with RA Family: What is included in the kit and any other components to prepare in addition?
... us/en/products/microcontrollers-microprocessors/ra-cortex-m-mcus/tw001-vuia6e1pocz-ra6e1-voice-user-reference-kitRA4E1 Voice User Reference Kit (TW001-VUIA4E1POCZ): https://www.renesas.com/us/en/products/microcontrollers-microprocessors/ra-cortex-m-mcus/tw001-vuia4e1pocz ...
Jul 26, 2024
Support Communities
