Location History:
- Chatsworth, CA (US) (1986 - 1992)
- Calabasas, CA (US) (1995 - 2001)
Company Filing History:
2 out of 2 
3 out of 832,966 Years Active: 1986-2001
Title: Alan S Hersh: Innovator in Acoustical Engineering
Introduction
Alan S Hersh is a notable inventor based in Calabasas, CA (US). He has made significant contributions to the field of acoustical engineering, holding a total of 5 patents. His work primarily focuses on active noise control systems and sound absorption techniques.
Latest Patents
Hersh's latest patents include innovative technologies aimed at reducing noise in fluid flow systems. One of his inventions is an active control system for attenuating noise in a duct with fluid flow. This system utilizes an array of stators positioned axially within the duct, along with sound sources that generate spinning mode sound to cancel out noise effectively. Another significant patent is a hybrid mode-scattering/sound-absorbing segmented liner system. This invention steers initial sound fields into higher-order modes for more effective absorption, particularly in turbofan engines.
Career Highlights
Throughout his career, Alan S Hersh has worked with various companies, including Hersh Acoustical Engineering, Inc. His expertise in acoustical engineering has led to advancements in noise control technologies that are applicable in various industries.
Collaborations
Hersh has collaborated with notable professionals in his field, including Bruce E Walker and Murray S Welkowsky. These collaborations have contributed to the development of innovative solutions in acoustical engineering.
Conclusion
Alan S Hersh's contributions to acoustical engineering through his patents and collaborations highlight his role as a significant innovator in the field. His work continues to influence noise control technologies and improve sound management in various applications.