The Stephens Group-backed Sound Seal, a leading manufacturer of noise control products, acquired Illinois-based Noise Barriers, which offers noise control products and services. Financial terms were not disclosed. “We are thrilled to add Noise Barriers to the Sound Seal portfolio of companies,” said Joe Lupone, CEO of Sound Seal. “With this acquisition, Sound Seal is able to expand our product portfolio and overall reach in to the noise control market through the addition of established brands and sales channel partners. This is in direct alignment with our core objective, which is to continue to strengthen and develop our presence in the noise control space, therefore allowing us the opportunity to better serve the acoustical market and the needs of its influencers.”