SPECIFICATION: Working Voltage: DC 5V (USB Power Supply), Support 1 Analog Microphone Input, Support Channel Dac Output, Support 12s Input Output materials: 32bit RISC , 240M operating frequency, support for DSP instruction set and FPU floating point arithmetic unit. PRODUCT PARAMETERS: 32bit RISC , operating frequency 240M, support DSP instruction set and FPU floating point arithmetic unit. PRACTICAL: Intelligent voice control board is compact design, very suitable for adding sound effects to , photo frames and displays. SUPPORT CALCULATION: This speech recognition asr board supports up to 1024 points complex FFT IFFT calculation or 2048 points real FFT IFFT calculation