127947 ⎘
Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic constructions for generation of phase shifting
RECONFIGURABLE ACOUSTIC METAMATERIALS, RECONFIGURABLE NOISE BARRIERS, AND METHODS OF TUNING NOISE BARRIERS
#2INTERFERENCE NOISE-CONTROL UNIT
#3Diffractor for diffracting sound
#4Road with sound diffractors
#5Noise reduction device
#6Active sound reduction apparatus and active noise insulation wall having same
#7Noise reducing equipment
#8Noise reducing equipment