Developing IIR Filters for NICU Active Noise Cancellation Incubator

When infants are fresh out of the womb their ears are extremely sensitive to even the quietest of noises. The infant's hearing is volatile in the loud hospital environment due to the sounds produced by the medical machinery which could potentially cause long term hearing damage. To reduce the noise heard by the infants we improved upon an existing active noise cancelling incubator. By using An infinite impulse response (IIR) filter to record frequencies in the time domain we can create noises with an opposite amplitude of unwanted noise around the baby's ear using a 2x2x2 system consisting of input microphones, speakers, and error microphones. When this noise is played by a speaker towards the baby's ear it will destructively interfere with the noises approaching the baby’s ear and reduce the amount of total sound the baby will hear. In order to set up this IIR filter we need to set up a working active noise cancellation incubator by updating the hardware and software to more modern components.