HLK-V20 Voice Recognition Module

HLK-V20 Voice Recognition Module

HLK-V20 is a high-performance pure offline newly launched by Hi-link Electronics according to a large number of pure offline control scenarios and products. It is a voice recognition module. It can be widely and quickly applied to smart homes, various smart small home appliances, toys, lamps.

Suitable for industrial, medical, IoT, automotive, security and lighting products that require voice control.

The module uses a 32-bit RSIC architecture core and adds a DSP instruction set specifically for signal processing and speech recognition, an FPU processing unit that supports floating-point operations, and an FFT accelerator. The audio signal is trained and learned through the neural network to improve the audio signal recognition ability.

The solution includes offline recognition of 150 local commands, background-free configuration of wake words, command words and broadcast response words, lightweight RTOS systems, supports rich environmental interfaces and simple and user-friendly customized tools.

HLK-V20 Voice Recognition Module Datasheet

Technical Specifications

Core

• 32bit RISC core, operating frequency 240M
• Supports DSP instruction set and FPU floating point operation unit
• FFT accelerator: Supports complex FFT/IFFT operations up to 1024 points or real FFT/IFFT operations up to 2048 points
• Customized audio algorithm operator

Storage

• Onboard high-speed SRAM
• Built-in 2 MB FLASH

Audio input and output

• Support 1 analog Microphone input, SNR≥94db
• Support 4 digital Microphone inputs
• Support dual-channel DAC output
• I2S input/output support

Power supply and clock

• Onboard 5V to 3.3V to power the chip , 3.3V to 1.2V LDO
• RC 12MHz clock source and PLL phase-locked loop clock source
• Set POR (Power On Reset), undervoltage detection and monitoring

Peripheral interface

• Support up to 10 GPIOs
• All GPIOs support external interrupt input and can be configured as wake-up sources
• 1 standard SPI Master interface, maximum speed is 30MHz
• 1 SPI Slave interface with maximum speed of 30MHz
• Maximum 3Mbps 1 full-duplex UART at speed
• 1 I2C master/slave controller with maximum speed of 400kHz
• 2 PWM outputs
• 1 12-bit SAR- with maximum sampling rate of 450KHz ADC

Custom voice

• Customize startup announcement
• Custom voice wake-up words
• Customize voice command words
• Custom TTS voice broadcast

The module has 16 pins, including power amplifier output, differential input and serial port.