's model
The 90°Bypass Filter and Wave Guide (90BYFWG) portion of Hammond’s model is a passive filter circuit that helps reduce high-frequency noise, which occurs in a variety of audio products. The filter is designed to reduce audio noise, hum, and interference, while maintaining good sound quality. The circuit comprises of two inductors, two capacitors, and an RC network. The inductors form a low-pass filter, while the capacitors form a high-pass filter. The RC network is used to adjust the crossover frequency of the combined filters. The circuit is designed to function at high frequencies, and can reduce audio noise up to 90dB.