The Audio User Interface (VUI) is also one of the contactless technologies that allows you to interact with your device through voice or voice commands.

MediaTek Genio 130A (MT7933) combines advanced Wi-Fi and Bluetooth capabilities with the latest voice processing and power management technologies for smart speakers, smart homes, and home entertainment.

The MediaTek Genio 130A (MT7933) integrates a standalone HiFi 4 DSP for Acoustic Echo Cancelling (AEC) and Far-Field Process for enhanced speech. A fully voice-controlled IoT application Alexa Built-in device

The Genio 130A is designed to support a wide range of standardization domains, including security, quality of service (QoS), and international regulatory specifications. MediaTek's low-cost, easy-to-use Internet of Things (IoT) development platform MediaTek LinkIt™ real-time operating system (RTOS) works with a cybersecurity hardware cryptographic engine, Wi-Fi security, and WPA3 for a variety of communication frameworks and cloud services. The Genio 130A supports Alexa Voice Service (AVS) Integration for AWS IoT with Amazon AVS IoT voice capabilities, leveraging the AVS API to easily build commercial-grade Alexa Built-in voice launch products.

Ref : https://aws.amazon.com/iot/solutions/connected-home/iot-and-alexa/

Listen to the user and deliver MQTT messages to AVS

Audio data is processed in the cloud and the voice response is received by the device

►Scenario application diagram

►Photos of display boards

►Scenario block diagram

►Core technical advantages

MediaTek's new Wi-Fi SoC Genio 130A (MT7933) integrates the HiFi 4 DSP with a discrete digital signal processor for far-field voice processing, with 3 ADCs / 2 DACs and dedicated SRAM for ultra-low-power, Always-On microphone capabilities with Voice Activity Detection (VAD) and Wake Word) support function. It is easy to add services such as voice assistants to the product.

►Solution specifications

Application Processor : 

• ARM® Cortex-M33 MCUs with floating-point arithmetic and 300MHz clock running 

• Network security hardware encryption engine includes AES, DES/3DES, SHA, ECC, TRNG

Audio Digital Signal Processor (DSP) : 

• Cadence ® Tensilica® HiFi4 processor running at 600MHz

• audio codec has 2 ADCs and 1 DAC 

• 256KB embedded SRAM memory

• Voice Activity Detection (VAD) and Wake Word  

Wi-Fi Technical Specifications :

Dual-band IEEE 802.11 1T1R a/b/g/n/ax 5GHz and 2.4GHz 

2.4G / 5GHz band, 20MHz bandwidth MCS0 ~ MCS8

Bluetooth Technical Specifications : 

Compliant with Bluetooth v5.0 transfer rate 2Mbps PHY, supports long-range and LE Advertising Extensions, 5GHz and 2.4GHz 

2.4G / 5GHz band, 20MHz bandwidth MCS0 ~ MCS8