Читать книгу Engineering Acoustics - Malcolm J. Crocker - Страница 136
Example 3.16
ОглавлениеCalculate all the possible natural frequencies for normal modes of vibration under 100 Hz within a rectangular room 3.1 × 4.7 × 6.2 m3.
Calculate all the possible natural frequencies for normal modes of vibration under 100 Hz within a rectangular room 3.1 × 4.7 × 6.2 m3.
