Frequency Division Design of Multi-Unit Moving Iron Earphone

A high-quality earphone with multiple sound-generating units and frequency-dividing circuits, with a core of sound-generating units consisting of multiple balanced armature units, aided by analog frequency-dividing circuits and an earphone shell made of light-cured resin, is designed. The whole project of physical production is realized. The analysis results of the earphone frequency response curve, which are obtained with the help of a frequency response tester, show that the production of headphones in sensitivity, frequency response curve stability, transient response, and many other aspects achieved the expected sound quality effect.