sound source level

基本解释

Portable sound source for calibration of Sound level meters and sound measuring system.
的便攜式聲級計和校準聲源聲測量系統。
The calculated results show that strong vibrating source, low gravitational level and sound medium with large density and small sound speed will enhance the levitation ability.
結果表明，提高聲源強度、降低重力水平或者採用密度大聲速小的氣躰介質有利於提高聲懸浮能力。
System hardware circuit audio digital signal source achieve this functions:Sound signals, sound intensity level control, data communications, liquid crystal display, alarm and power.
系統硬件電路包括音頻數字信號源實現聲音信號産生、數字聲強級控制、多機數據通信、液晶顯示和電源等模塊單元。