Acoustic Design Charts |
Contents
PREFACE | 1 |
ATTENUATION OF SOUND AND VIBRATIONS | 21 |
Transmission loss from a vibrating body to a rigid | 35 |
Copyright | |
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Common terms and phrases
100 cycle line abscissa acoustic ohms acoustic power output acoustic reactance acoustic resistance acoustic watts air gap flux air load aluminum discs ampere turns attenuation centimeters circular piston mounted compliance controlled mechanical system copper wire curve marked curves indicate cut-off frequency CYCLES CHART DECIBELS diameter in inches diameter over wavelength dynes per sq dynes/cm effective length enclosed volumes exponential horn F dynes family of curves field power Find the acoustic find the intersection force of F FREQUENCY IN CYCLES function of frequency hand ordinate scale Helmholtz resonator impedance increase inertance infinite baffle mechanical ohms multiply normal axis numbers particle displacement particle velocity peak amplitude piston diameter radiation resistance read the intersection resistance controlled mechanical resonance frequency ring diameter Sample Problem Find second harmonic small compared sound being radiated sound pressure spring throat area Transmission loss various ratios vibrating piston vibrating system voice coil mass wavelength of sound