RightMark has a new tool out called 3DSound version 1.0. In general RightMark Audio analyzers are independent audio measurements open-source projects developed by the iXBT.com / Digit-Life team.

http://audio.rightmark.org/download.shtml

Features of version 1.0 release (differences with beta shown in bold):

- DirectSound diagnostics of hardware supported functions for the selected DirectSound device;
- EAX1, EAX2, EAX3, EAX4 support check;
- subjective test of DirectSound3D positioning, vertical plane supported;
- EAX2 and EAX3 reverb mode, occlusions and obstructions on/off;
- CPU utilisation test with different amounts of DirectSound and DirectSound3D buffers and EAX2 reverb, added batch test mode;
- special statistical data processing of CPU utilization, with average and dispertion values;
- updated User's Manual.