Ключевые слова:
Acoustics, Acoustic measurement, Acoustic absorption, Acoustic testing, Sound insulation, Test equipment, Acoustic engineering, Construction materials, Buildings, Transfer functions, Testing conditions, Frequencies, Test specimens, Seatings, Equations, Sound velocity, Wavelengths, Error correction, Errors, Calibration, Reflection factor, Ratios, Acoustic properties and phenomena, Precision, Reports, Mathematical calculations