应用声学
應用聲學
응용성학
APPLIED ACOUSTICS
2001年
3期
6-10
,共5页
热疗%聚焦脉冲声场%时域%频域
熱療%聚焦脈遲聲場%時域%頻域
열료%취초맥충성장%시역%빈역
本文用传递函数的概念导出了凹球面聚焦脉冲声场的简洁表达式，从数值计算上和实验上研究了这种声场中轴线上不同位置处声压信号的持续时间和频谱特征，分析了它们对热疗的影响。
本文用傳遞函數的概唸導齣瞭凹毬麵聚焦脈遲聲場的簡潔錶達式，從數值計算上和實驗上研究瞭這種聲場中軸線上不同位置處聲壓信號的持續時間和頻譜特徵，分析瞭它們對熱療的影響。
본문용전체함수적개념도출료요구면취초맥충성장적간길표체식，종수치계산상화실험상연구료저충성장중축선상불동위치처성압신호적지속시간화빈보특정，분석료타문대열료적영향。
A simple expression of focused impulse sound field generated by concave spherical surface transducers is deduced based on the concept of transfer function. The duration and spectral characteristics of acoustic pressure signal at various sites of the transducer axis in this sound field are studied numerically and experimentally, and its effects on hyperthermia are analyzed.
