Читать книгу Engineering Acoustics - Malcolm J. Crocker - Страница 26

The impulse response of a dynamic system is its output in response to a brief input pulse signal, called an impulse. The impulse response of the damped vibration of a one‐degree‐of‐freedom mass‐spring system of mass M, stiffness K, and coefficient of damping R (see Chapter 2 of this book) is given by

where A = (Mω_d)⁻¹, α = R/2 M and λ = ω_d is known as the damped “natural” angular frequency. Find the Fourier spectrum representation of this impulse response.