For recording scheme, users can choose recording IC chip or recording module, Audio recording and playback IC The recording module is a voice storage chip that can record and play repeatedly by triggering the REC recording key and then triggering the PLAY play key after the recording is completed (the schematic diagram is viewed in the principle of the recording chip). It includes ADC and DAC processes, which are completed by the chip itself, including voice data Acquisition, analysis, compression, storage and playback And so on.

From the use function, voice chips can be basically divided into Voice recording chip And playback voice chip. To design a product that uses a recording scheme, first consider whether to use live voice recording. If you need to record voice, choose a voice chip with recording function, otherwise choose a voice chip with playback function only. Generally speaking, voice chips with recording function have the function of playing back voice, but when playing voice, the sound quality is not as good as that of a special voice chip, so factors such as function and sound quality should be weighed when selecting voice chips. Famous brands include: WTR series and WT2003H series, WT2605 series, WT2000T series, WT2003S series（ It has been discontinued, and the WT2003H series is another compatible upgrade substitute ）; (Product upgrading is an adaptive adjustment of our products with the development of the market. The basically old products will be discontinued, and there will be support for replacement and upgrading products, which will not affect users' use.).