For measuring comparative levels of sound using a similar frequency range to the human ear 400Hz - 4KHz. Experiments include measuring sound level through different materials (absorption), reflected sound, noise pollution and the amplitude of sound with distance. Range: 50-100 dBA., For measuring comparative levels of sound using a similar frequency range to the human ear 400Hz - 4KHz. Experiments include measuring sound level through different materials (absorption), reflected sound, noise pollution and the amplitude of sound with distance. Range: 50-100 dBA.
.jpg)