DSPLab is a library of delphi components for digital signal processing. The library contains two components: IIR Filter and FFT. IIR Filter is Butterworth, Bessel and Chebyshev infinite-impulse-response (IIR) filters, with lowpass, highpass, bandpass

对于空气弹簧，解算声压方程及贝塞尔方程，得到力传递率的表达式-For air spring, the sound pressure equation solver and Bessel equation, expression force transmission rate