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Theory of Sound
Sound and Vibration Perception
11 other sections not shown
absorption coefficient acoustic air space airborne sound transmission amplification architectural acoustics attenuation audience auditorium average background noise level bandwidth basilar membrane building calculate ceiling centre frequency components construction criteria curve dBA NC decay decibels depends determined direct sound displacement distance effect floor frequency range higher frequencies increase instruments intensity listening room loudness loudspeaker low frequencies low-frequency machine masking material maximum measured medium method microphone mineral wool msec necessary noise source normal normalised occur octave band panel particle particle displacement particular partition phons pressure level produced pure tone radiated receiving room reduce reflected sounds resonant frequency reverberation seats Section sound absorption sound energy sound field sound insulation sound level meter sound power level sound pressure sound reinforcement system sound source sound transmission loss sound waves sound-pressure level source room spectrum speech privacy speed of sound tion transmitted usually velocity vibration wall wavelength