MediaTek's new wireless connectivity SoC Genio 130A (MT7933) integrates a microcontroller (MCU), AI engine, WiFi 6 and Bluetooth 5.2, a power management unit (PMU), and a discrete audio digital signal processor (DSP) in a highly integrated design that provides energy-efficient, reliable and efficient connectivity for small form factors, making it the best choice for a wide range of Internet of Things (IoT) devices.

The global pandemic has accelerated the development of digital transformation and intelligent Internet of Things. Contactless devices to combat the spread of the pandemic are also heavily invested. The Voice User Interface (VUI), which does not require contact with the hands or eyes and does not require eye attention, 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 to deliver new solutions for smart speakers, smart homes, home entertainment and automotive multimedia entertainment. 

The MediaTek Genio 130A (MT7933) uses audio digital signal processor (DSP) technology to fully match a wide range of voice-enabled products.

Genio 130A's Voice Activity Detection (VAD) technology detects human speech and ignores muted segments in the audio. Audio processing is performed only after human speech is detected for low-power purposes. Whether it's a single microphone with a simplified design, or multiple matrix microphones. The Genio 130A is capable of acoustic echo cancelling (AEC) and far-field processing to enhance speech. Wake word detection, such as 'Hey Siri', is then divided into two types of speech recognition scenarios. In addition to the familiar cloud voice processing, such as AIA (AVS Integration for AWS IoT).

The Genio 130A also supports native voice commands, via predefined voice commands. In the case of no network connection and network latency, it is easy to control the device through voice commands. Such as: control the light, volume, play, pause music, front and back audio control.

Genio 130A (MT7933) demo, enter CLI Commands via console to enable DSP and VA to demo local voice:

1. Input "aud_dbg cset ADSP_Enable 1 1"



2. Input "aud_dbg va -v 1"

Genio 130A local voice commands demo :

“Hey, Siri”



“Open Camera”



“Take a picture”



“Play music”



“Next Song”

►Scenario application diagram

►Photos of display boards

►Scenario block diagram

►Core technical advantages

MediaTek's new wireless connectivity SoC Genio 130A (MT7933) integrates a discrete audio digital signal processor (DSP) to easily add voice assistant and other services to the product. The HiFi4 DSP used features 3 ADCs/2 DACs and dedicated SRAM to provide ultra-low-power, Always-On microphone functionality with voice activity detection (VAD) and wake word support.

WPG Pinjia Group provides a full range of technical support, from the early development and design of suitable audio hardware, the addition and deletion of predefined native voice commands, and the adjustment of audio processing performance. Wireless connection performance testing in the mass production stage, etc.

►Solution specifications

Application Processor : 

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

• 1MB embedded SRAM 

• Support external serial flash up to 16MB Support for run-in-place (XIP)

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

• Supports 47 GPIOs multi-tasking switching SPI, I2C, Aux ADC, UART, and GPIO functions

• Supports 12 DMA channels

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  

• 3.5mm audio port with external active speaker

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