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With the increasing demand for voice modules in the market, Hi-Link conforms to the market and launches a dual-mic offline voice control module HLK-V24 with high performance, high sensitivity, and low power consumption! HLK-V24 compared to HLK-V20 adopt completely different chip solutions, dual-mic noise reduction design, pure offline voice module, and rich peripheral interfaces: I2C, UART, SPI, QSPI, GPIO, PWM, I2S, Mic. If you are interested about HLK-V24/V20, you can add the official WeChat: HLKtech09 for details.

HLK-V24 is a deep learning speech recognition module for embedded products. It has a built-in neural network hardware acceleration module NPU, a standard ARM processor Cortex-M3, and integrates a variety of control and communication interfaces. The main components include:

• Neural network hardware acceleration module NP

• Standard ARM processor Cortex-M

• QSPI interface for connecting external Flas

• Multiple audio data interfaces: I2S, PDM digital input, Mic analog input, Audio analog outpu

• Multiple peripheral control interfaces: PWM output, I2C, UART, SPI, GPI

• JTAG debug interfac

• Built-in PLL, timer, watchdog




1High recognition rate and faster response

HLK-V24 has built-in neural network hardware acceleration module NPU. It can deep learning, dual-mic design noise reduction processing and intelligently distinguish environmental noise and recognize human voice, which has a high tolerance to environmental noise. In a recognition rate under 60dB environmental noise, It can reach more than 98%. With the powerful algorithm and dual microphone support, the HLK-V24 takes only 0.1S from the end of the voice input to the sending of the feedback signal. For details, you can watch the video below, and the response is quick and smooth.




2Large capacity supports 200 command words

The default version of HLK-V24 removes the boot broadcast, if necessary, you can also communicate with us in advance to customize it. HLK-V24 uses external QSPI Flash to store the firmware, the minimum capacity is 4MB, and the command word supports up to 200 words, usually 3~6 words per command word. For the best use effect, it is recommended that the command words be controlled within a certain range.




3Support Chinese and English

With bilingual control, HLK-V24 support Mandarin and English two languages, slight accent does not affect the using effection, which can be used for foreign trade electronic products. HLK-V24 has a strong language library support, and HLK-V24 can accurately recognize polyphonic characters and rare characters, making it smarter.




4Long-distance response

The pickup distance of HLK-V24 can reach more than 5 meters, supports analog and digital microphones, supports far-field recognition, noise suppression and sound source localization; supports high-resolution stereo Sigma-Delta audio ADC; ADC built-in PGA, maximum gain 27dB; full amplitude Input voltage: 2.1Vp-p.




5Bulk support for customization and development

Although it is a different chip solution from V20, V24 can still be understood as an advanced version of V20 for use in application scenarios with higher requirements. For customers with bulk demand, Hi-Link can provide customized development services, including but not limited to customized keywords, command words, voice output, customized interfaces, etc.

Now HLK-V24 has formulated command words for multiple scenarios, such as: switch, air conditioner, fan, heating table, sweeper, range hood, toilet, infrared voice remote control and other scenarios. Customers in need are welcome to contact us, especially application equipment that generates noise when working, such as drinking fountains, air conditioners, and electric vehicles. HLK-V24 can provide smart offline voice solutions.