USB connected to the computer can operate the voice download without the need for a dedicated voice downloader. USB plug-in computer can directly update the contents of FLASH and TF card, support FAT16, FAT32 file system. Through the simple serial command to complete the specified music, and control the volume and other functions. The control modes of the module are divided into three types: UART serial port control (complete function), KEY interface external expansion button to achieve MP3 function control and 5 button specified track control (one to one audio control), INF interface can be customized infrared remote control (according to the remote control Function control). Module with 3W power amplifier, can directly push 4 euro 3-20W speaker. Mainly for high-end voice product applications, the product sound effect is very good, is a powerful MP3 player. Product features 1. Easy to make voice, directly copy mp3, wav format audio files directly to TF card or U disk according to number 001, 002... Support the support of sampling rate (KHz): 8/11.025/12/16/22.05/24/ 32/44.1/48; 2. 24-bit DAC output, dynamic range support 90dB, SNR support 85dB; 3. Support three control modes: UART serial port control (complete function), KEY button control, custom INF infrared remote control (according to remote control function control) 3. Supports playback of any segment of voice, audio data is sorted by folder, supports 100 folders, and 1000 songs can be assigned to each folder; 4. Support FAT16, FAT32 file system, support 32G TF card, support 32G U disk, 128M byte NORFLASH. 5.30 level volume is adjustable, 5 levels EQ adjustable (EQ sound). 6. Operating voltage 5V power supply system: DC3.2~5.1V. 7.5V power supply, quiescent current 13-17mA 8. Insert function, can insert a piece of speech advertisement while broadcasting the speech, after the pronunciation advertisement broadcasts, continue to play the speech interrupted before. A. Five specified track playback buttons can be configured trigger mode: pulse repeat trigger, pulse does not repeat the trigger, level hold cycle, level non-retentive cycle. B. Support to drive 16 ohm earphones, need string capacitor earphone circuit, SNR=90dB, pay special attention to the headset output interface can not connect the horn.