Each channel has a channel signal switch, high-performance microphone input amplifier circuit. 各通道设有通道信号切换开关,话筒输入设置高性能放大电路。
A portable loudspeaker with built-in microphone and amplifier. 内部带有扩音器和扬声器的轻便的扩音器。
Because the eggs 'prompted sounds are lied on low frequency bands, the microphone and sound amplifier that have excellent duration response should be used. 蛋品激励出的声音主要集中在低频段,因此选择在低频段有好的频率响应特性的麦克风和放大电路;
Audio-effect of multi-function hall lies in microphone, mixing console, effect processor, power amplifier, speaker and their conjunction or signal process. 多功能厅中音响效果的质量主要取决于话筒、调音台、效果器、功率放大器、音箱等几种设备,以及它们之间的联接和对信号的处理。
This instrument, which realized digital weight and frequency analyse by software, used microphone, amplifier, data acquisitive card; it had the function of data record, data taking, real-time analyzing and A-weight sound level measuring. 该仪器硬件采用传声器、放大器及数据采集卡,通过软件编程实现数字计权及频谱分析,具有噪声信号的读取、记录、实时分析,以及A计权声级的测量等功能。