The Inlet Air Noise is mostly high frequency and an absorptive silencer in conjunction with the Inlet Filter Assembly is usually required to meet noise attenuation requirements. Although the Inlet Silencing criteria is commonly less stringent than the Exhaust, it is critical the Sonata Inlet Silencer be constructed in a fashion that allows no foreign particles to be passes through to the Turbine. Cleanliness of the internal baffles is essential and well as high manufacturing qualities being obtained.