HLK-V20 Wireless Voice Control 32bit with 2MB FLASH Wifi Module with 150 Words Customization for Light/Lamp/Heating

Overview

HLK-V20 is the latest high-performance pure offline speech recognition module for a large number of pure offline control scenarios and products. It can be widely and quickly applied to smart homes, various smart small appliances, 86 boxes, toys, lamps, industrial, medical, Products that require voice control such as the Internet of Things, automobiles, security and lighting. The module uses a 32bit RSIC architecture core, and adds a DSP instruction set specifically for signal processing and speech recognition, an FPU operation unit that supports floating point operations, and an FFT accelerator. The audio signal is trained and learned through the neural network to improve the voice signal Recognition ability. The solution supports offline recognition of 150 local commands, free configuration of wake-up words, command words, and broadcast reply words through the background, supports lightweight RTOS systems, rich peripheral interfaces, and simple and friendly customized tools.

The physical diagram of the module is shown below:

Product Features

Processing kernel:

● 32bit RISC core, running frequency 240M

● Support DSP instruction set and FPU floating point arithmetic unit

● FFT accelerator: supports up to 1024 points of complex FFT/IFFT operations or 2048 points of real FFT/IFFT operations

Calculate

● Customized voice algorithm operator

storage:

● Built-in high-speed SRAM

● Built-in 2MB FLASH

Audio input and output:

● Support 1 analog Mic input, SNR≥94db

● Support 4 digital Mic input

● Support dual-channel DAC output

● Support I2S input/output

Power supply and clock:

● Built-in 5V to 3.3V, 3.3V to 1.2V LDO to power the chip

● RC 12MHz clock source and PLL phase-locked loop clock source

● Set POR (Power on Reset), low voltage detection and watchdog

Peripheral interface:

● Support up to 10 GPIO

● All GPIOs can be configured as external interrupt input and wake-up sources

● 1 standard SPI Master interface, the highest rate is 30MHz

● 1 SPI Slave interface, the highest rate is 30MHz

● 1 full-duplex UART maximum rate 3Mbps

● 1 I2C master/slave controller with a maximum speed of 400kHz

● 2 PWM outputs

● 1 12-bit SAR-ADC maximum 450Khz sampling rate

Custom voice:

● Customize the startup announcement

● Custom voice wake-up words

● Customize voice command words

● Customize TTS voice broadcast

● Support no wake-up words (no need to wake up, direct recognition of command words)

The module has rich system peripherals, including UART/I2C/SPI/PWM/I2S/DAC/GPIO/DMic/AMic. The following figure shows the functional block diagram of the module system.

Pin introduction:

Size:

Unit of measurement: mm

Function description

The HLK-V20 supporting test board is convenient for customers to intuitively experience the voice control of LED lights and the serial port output protocol data after voice recognition.