Sean Browne is the senior manager of the Research and Development group at Armstrong, where he leads a team of innovative engineers and scientists. He is responsible for the company’s Codes and Standards Program, which informs customers of the latest developments in acoustics and building regulations. He is also an active member of the Acoustical Society of America and ASTM International. He has engineering degrees from Florida State University and the University of Miami, and has written for various architectural and interior magazines. His research has been featured in the journals of the International Symposium on Room Acoustics and the Acoustical Society of America. 

Julian Treasure is an author and international speaker on conscious listening, powerful speaking and business sound. His five TED talks, including the sixth most-viewed of all time, have been viewed more than 150 million times and his online courses have taught over 140,000 students. He has been widely featured as a communication and sound expert in the world's media. 

For 20 years, Julian has helped major brands worldwide to design effective sound, particularly in physical spaces. His first book ‘Sound Business’ is a seminal work on business sound; his second ‘How To Be Heard’ won both SOVAS and Audie global awards and his third ‘Sound Affects’ about the power and wonder of sound will be published worldwide in 2025.