Installing silencers in factories is crucial to the prevention of hearing damage caused by engine noise. For facilities with limited space, elliptical mufflers—known for their shape flexibility—are ideal. In real-world scenarios, factories often face multiple sources of intermittent venting noise. Traditionally, individual mufflers are installed at each noise source, which significantly increases manufacturing costs and consumes valuable site space. To address this issue cost-effectively and efficiently, in this study, we developed a smart venting flow-altering system, incorporating a single elliptical silencer with sensors, actuators, and a controller. The system intelligently directs venting flows into the muffler using a combination of solenoid valves, relays, microphones, a controller, and an advanced elliptical muffler design. The muffler incorporates multiple chambers, baffles, extended perforated/nonperforated tubes, sound-absorbing wool, and an eccentric inlet. A finite element method-based mathematical model was developed to predict the sound transmission loss of the system. To optimize noise reduction performance, several parameters were evaluated, including the diameter of the eccentric inlet, lengths of extended tubes, perforation ratios, muffler body length, elliptical axis dimensions, and acoustic flow impedance. This smart system offers a cost-effective and space-efficient solution to managing noise from multiple intermittent venting noise sources. The findings of this study provide valuable guidance for acoustic engineers seeking to tackle similar industrial noise challenges.