Electro-acoustic Analogy

• Hypothesis: acoustic system is composed of ideal components carrying either
  • Kinetic energy or
  • Potential energy or
  • Are of purely dissipative behaviour
• Approximation that can be used under the condition that the sound wavelength is long compared to the relevant physical length scales of the problem
• Basic variables used in the description of translational mechanical systems
  • Pression, p
    p =F/A
  • Volume velocity, w
    w = vA

A ... surface of the plane in contact with the acoustic medium

• Basic one-port components:
• Acoustic mass, m_a
• Acoustic compliance, c_a
• Acoustic resistance, r_a