Supports in GB2312, GBK, BIG5 and UNICODE internal code formats;Clear, natural and accurate Chinese speech synthesis effect; can synthesize any Chinese , and support the synthesis of English letters;With intelligent analysis and processing algorithms, it can correctly identify numerical values, numbers, time and date and commonly used weights and measures symbols;Strong ability to process polyphonic words and Chinese surnames;Support a variety of control tags to improve the accuracy of processing;The amount of synthesized each time can be up to 200 bytes;Support a variety of control commands, including: synthesis, stop, pause synthesis, continue synthesis, change baud rate, etc.;Support sleep function, which can reduce consumption in sleep state; support multiple ways to query chip working state;Support serial data communication interface, support three communication baud rates: 9600bps, 19200bps, 38400bps;Support 16-level volume adjustment; the foreground volume of playing and the background volume of playing background music can be controlled separately;The speed of words can be adjusted by sending control marks, and it supports 6-level word speed adjustment;There are multiple chord music, prompt sound effects and common voice prompts for some industry fields are solidified in the chip;Internally integrated 19 voice prompts, 23 chord prompts, and 15 background music;The final product is provided in the form of SSOP chip package; the volume is the smallest in the industry;All indicators of the chip meet the application in harsh outdoor environments;Technical indicators:1. Supply voltage 3.3-5V2. Provide TTL serial port, the default baud rate is 96003. Provide speaker interface4. Provide 3.5 headphone jackColour:blackMaterial:PCBPackage Contents:1 x ModuleOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.