Complex sentence: John Nady, CEO of Nady Systems, developed and patented a companding process for wireless which significantly improved sound quality/range in the early 1970s, and offered this product for sale in wireless microphones in 1976.
Split into simpler sentences: John Nady, CEO of Nady Systems, first developed and patented a companding process for wireless which significantly improved sound quality and range in the early 1970s. He began offering this product for sale in wireless microphones in 1976.