Purpose:
To give the student training in making acoustical
measurements, and provide a
comprehension of advanced measurement systems.
Contents:
• Use and calibration
of: microphones, accelerometers, probe microphones and intensity
probes. Calibrators, pistonphones,
electrostatic actuators.
• Measurement methods
and equipment: Sine sweep and octave band analysis, MLS, TDS,
and FFT. Stimuli types (sine, swept sine, white/pink noise, impulses, and
pseudo
random sequences). Digital interfaces for measurement equipment
(IEEE-488/GPIB).
• Measurement of
(e.g.): SPL, amplitude and phase response, impulse response, and
sensitivity. Impedance measurements. Intensity, sound power.
• Evaluation of
measurement errors: signal-to-noise ratio, crosstalk, windowing, time
averaging, linear/exponential weighting, physical set-ups.
Prerequisites:
Fundamentals of acoustics, Acoustical
Transducers.
Duration:
1 ECTS
Category:
Project theme course (