Learn about the various ways we hear and perceive sound and how to improve technology and products for better communication. Communication acoustics include all branches of acoustics dealing with communication systems between humans, between humans and machines, and between machines (e.g. speech acoustics, electro acoustics, audio technology). The open online course introduces you to this topic giving an overview of the different branches of acoustics. The following renowned experts from each area of expertise, which are united in the TU9 alliance, combine their knowledge to communicate basic principles, and to highlight current applications in communication acoustics .