传声器的指向性对声场方向性分布的测量有很大影响。
The directional characteristic of microphone is an important factor in the measurement of directional distribution of sound field.
驻极体传声器目前主要是民用，单指向性驻极体传声器设计与生产的关键在于内部相移网络的控制。
The normal zero-IF topology with the single quadrature channels is very sensitive to the phase-error of the phase-shift network of LO.
应用推荐