The musical instrument with the character maple is the maple flute. Fengdi means a musical instrument, specifically music equipment. Di is a word, the pinyin is dí, which means the name of a wind instrument, usually made of bamboo, with eight holes, a sounding instrument that is played horizontally or has a sharp sound.

Fengdi's musical instruments are one of the more famous domestic audio brands under Changfeng Imaging, headquartered in Shenzhen. I hope my answer can help you, thank you.

Classification of maple flutes

Based on its energy conversion principle, maple flutes can be divided into two types: electric maple flutes and capacitive maple flutes. Among them, the electric type can be subdivided into moving coil maple flutes and aluminum ribbon maple flutes.

Common types of commercial maple flutes include capacitive maple flutes, crystal maple flutes, carbon maple flutes and dynamic maple flutes. Commonly used energy sources for capacitive maple flutes include DC bias power supply and electret film. Both capacitive maple flutes and crystal maple flutes convert sound energy into electrical energy and produce a changing electric field.

The carbon maple flute uses a DC voltage source to change its resistance through sound vibration, thereby converting the acoustic signal into an electrical signal. Capacitive, crystal, and carbon maple flutes all generate a voltage signal proportional to the displacement of the sensitive membrane, while dynamic microphones generate a voltage signal proportional to the vibration rate of the sensitive membrane.

Dynamic microphones use permanent magnets as energy sources and convert sound energy into electrical energy based on the inductive effect.