Support English control Single MIC Access Support AEC echo elimination, steady-state noise reduction Support to wake up from learning, no need to compile firmware Comprehensive recognition rate can reach more than 98% Identification time is less than 100ms Extremely low error rate Entry corpus up to 150 Kernel Introduction: Integrated 32bit RISC kernel, frequency up to 240MHz Support for DSP instruction sets and FPU floating point arithmetic units FFT Accelerator: Maximum Support 1024 points FFT / IFFT operation, or 2048 points FFT / IFFT operation Unisound Equation Customized Logo Algorithm Built-in 242KB high speed SRAM 8kb ROM for boot Built-in 2MB SPI Flash Support 1 road simulation MIC input, SNR greater than equal 94dB Support for dual channel DAC output Built-in 5V to 3.3V, 3.3V 1.2V LDO is power supply for chip Provide complete RTOS-based SDK Colour:Black Material:PCB+electronic components Package Contents: 4 x VC-02-Kit development board 4 x Speaker 4 x Microphone