The processing method of seashell RS2 is quite ingenious, and it chooses to do subtraction.

He is a pure tone player. He abandoned the Android motherboard with high radiation and high power consumption, and even made a choice between WiFi and Bluetooth connection.

Switching to a low-power pure tone system, coupled with a fitted shield, can make the range more pure and transparent, thus saving a lot of burden of stacking materials for audio circuits.

In addition, the low-power pure tone system also effectively reduces the calorific value and power supply pressure of the first half of the motherboard, which makes the loss of the sound source signal less when it is clock-synchronized and shaped by the FPGA chip, so it can retain more information.