Active Noise Cancellation Mufflers Offer Maximum Low Frequency Performance
HUSH POD™ electronic cancellation silencers utilize the principle of destructive interference to reduce noise levels on open pipe systems such as vacuum blower outlets, pressure blower intakes and internal combustion engine exhausts. A microphone records the noise source sending a signal back to the control box/amplifier which generates a 180° out of phase equal and opposite "anti-noise" wave amplified through speakers mounted in a single housing. The speakers are not directly exposed to the air flow. Cancellation takes place at the end of the open pipe. HUSH POD™ active mufflers provide maximum noise reduction in the 50 to 500 Hz frequency range where traditional passive designs are lacking.