Transaural Stereo and HRTF Modeling Review

Julius Smith $<$jos at ccrma$>$ (CCRMA)

I will present some interesting reading I did recently on the subject of 3D sound and ``transaural stereo''. Consider the following questions:

• What is transaural stereo exactly? Does it really work? How well?
• What is the Cooper-Bauck ``shuffle structure'' for cross-talk cancellation? How does it improve on the original Schroeder-Atal structure?
• What is ``diffuse field equalization'' exactly?
• How long is an HRTF in time, and how much can it be shortened?
• How are HRTF filters designed these days?
• Is it worthwhile to implement FIR HRTFs using the FFT, or is time-domain convolution faster?
• What are some of the main patents in 3D auditory display and transaural stereo?

If you don't know the answers to any of the above questions, you might be interested in coming!

Julius