Acoustic diagnostic apparatus, acoustic diagnostic method, and non-transitory computer-readable storage medium recording acoustic diagnostic program

An acoustic diagnostic apparatus comprising:

• an acoustic vibration unit configured to apply an acoustic vibration to a diagnosis target object;
• an acoustic vibration signal generation unit configured to generate an acoustic vibration signal and continuously input the acoustic vibration signal to the acoustic vibration unit;
• a sound receiving unit configured to receive an evaluation target sound including a sound wave reflected from the diagnosis target object and a vibration radiated sound from the diagnosis target object, and output a sound reception signal;
• an impulse response calculation unit configured to calculate an impulse response based on the sound reception signal;
• a structure state analysis unit configured to calculate an acoustic characteristic using the impulse response, and analyze a state of the diagnosis target object by grasping a change of the sound reception signal;
• and
• a structure state diagnostic unit configured to diagnose the state of the diagnosis target object based on an analysis result of the structure state analysis unit.