提升话筒 meaning in English

hoistphone

Use the import part of an apparatus and strict technique to make sure the quality . use the technology of dsp digital shift frequency , and adopt high speed of a d , d a switch electrocircuit
反馈消除技术，自动寻找反馈啸叫频点，液晶显示啸叫频率，并自动形成数字滤波器，消除啸叫频率，能有效提升话筒增益
Dsp digital shift frequency sires is new generation conference system and teaching equipment , which adopts dsp technology . it can lock the point of howl a automatically , dsp digital shift frequency and aptitude mix sound of transmitter
数字自动滤波器，数字话筒智能混音器，数字高低音调节器等多项数字化音频处理模块的技术优势，解决了会议教学扩声中的声反馈问题，可提升话筒灵敏度