architectural acoustics 1 of 4: sound and building materials Published 9 years ago • 155K plays • Length 2:36 Download video MP4 Download video MP3 Similar videos 4:20 architectural acoustics 2 of 4: sound absorption coefficient and noise reduction coefficient 1:03 architectural acoustics 3 of 4: ray tracing and sound reflections 4:33 architectural acoustics 4 of 4: sound moving in a room 13:17 introduction to architectural acoustics