Free 3d ultrasound software for linux

3D Spatialization of Sound is a Linux/X11 port of the 3D spatializer library from the CRC.

This program creates "directional" stereo sound from mono source. CRC folks told me I shouldnt have raised the sampling frequency without adjusting other stuff.

Oh well. This was a proof-of-concept type project anyway. I think to get correct 3D effect, you need to drop sampling rate back to 11025.

To Build the X11 implementation:

1. make
2. cp audio-filter /usr/local/bin
3. mpg123 -m -s some_music.mp3 | audio-filter | aplay -S -s 44100 -f s16l -

audio-filter is implemented as a filter, it reads signed 16 bit mono input at 44100 khz from stdin, and outputs signed 16 bit stereo, 44100 khz output to stdout. You can replace mpg123 with any sound source generating signed 16 bit 44100 khz mono signal. "aplay" is a sound player utility which comes with ALSA linux sound driver. You can use "play" from the sox package, or "ampctl", or any other sound player that would read 44100 khz, signed 16 bit stereo raw data from stdin. For "sox" play script, you would replace "aplay" command line with "play -c 2 -f s -r 44100 -s w -t raw -"

If everything is good, a 640x480 window will come up, with some cryptic writing on the top, a filled circle with an arrow pointing right, and a empty circle slightly to the right of the circle with arrow.

NOTE, that just like in the original Windows implementation, the axiss are reversed. The arrow on the "head" is pointing "forward". So, in the default startup configuration, the sound is located in front of the listener. Moving the sound source "up" moves it to the left of the listener, and "down", to the right. You can visualize this well if you turn your monitor 90 degrees counter
clock wise.

The filled circle with an arrow is your "head"
The empty circle is the "sound source"

You can move the "sound source" around by clicking the mouse at any position in the window, or by clicking on the "sound source" circle, and dragging it to the desired position. Soundfield will be dynamically updated as you do this.

You can move the "head" by moving the mouse to desired position, and right-clicking. The "head" icon will move to the new position and soundfield will be updated.

3D Realms Forums NavMenu provides easy navigation through the 3D Realms forums.

Basically this lists all forums and some other sections of the 3D Realms Forums in its own menu at the top of Firefox. This allows you to jump to any forum from anywhere on the web.

3D Pong project is a simple Xlib vector-based ping-pong game.
3D Pong is is a very small and fast ping-pong or handball game for one or two players. It uses simple 3D vector graphics in Xlib.
Multiple views are possible, and red/blue separation is available for users with 3D movie glasses.
Main features:
Game Play:
- 1 player against the computer
- 1 player in "handball" mode
- 2 players, networked
- User-defined gravity level
- With or without a deflective "net"
Display Modes:
- Red/Blue split mode for true 3D using 3D glasses!!!
- Six viewing positions:
- First Person POV from behind your paddle
- "Bleacher" view from the side of the game arenta.
- Above view.
- Freely rotatable mode (using the mouse)
- A dizzying "follow the ball" mode
- Follow the paddle mode

LibAran is a 2D/3D Fast Multipole Method software library.
Main features:
- 2D FMM algorithms through Laurent Series.
- 3D FMM algorithms through complex spherical harmonics series. These series can handle Newton/Coulomb potentials. Sparse translationoperators (O(p^3) complexity) are included.
- Dynamic QTree/OcTree LibVsg (VsgPRTree2d and VsgPRTree3d) particles filtering.

The second release of a stable, althought beta, version has been tested in Unixes and Windows.

A lot of new capabilities, some of them really sofisticated, have been included in this second version. The most important is the compatibility between this version and all future ones.

As before it has "geometrical-attached-objects" what gives the aplication a new and very strong tool that aims at the perfection of drawings in close conjunction with simplicity and ease of use.

The drawing done can be obtained as a metapost file to include in any TeX/LaTeX document, or as a PS file. Complete User Manual in Spanish included.

Vertex 3D Model Assembler project is a polygon-based live-end modeller.

The Vertex 3D Model Assembler is a 3D modeller geared towards making high performance models for games and other live-end requirements.

It uses the V3D format to maximize efficiency with OpenGL rendering, and can view/edit any V3D hybrid data.

Mesa is a 3-D graphics library with an API which is very similar to that of OpenGL. To the extent that Mesa utilizes the OpenGL command syntax or state machine, it is being used with authorization from Silicon Graphics, Inc.(SGI). However, the author does not possess an OpenGL license from SGI, and makes no claim that Mesa is in any way a compatible replacement for OpenGL or associated with SGI. Those who want a licensed implementation of OpenGL should contact a licensed vendor.
Please do not refer to the library as MesaGL (for legal reasons). Its just Mesa or The Mesa 3-D graphics libraryand thats all.
Enhancements:
New features
- OpenGL 2.0 and 2.1 API support.
Bug fixes
- Fixed a few fog-related bugs.
- Fixed broken GLSL mix() function.
- Fixed broken GLSL exp() functions.
- Fixed GLSL mod4(vec4, vec4) bug.
- Implemented GLSL asin(), acos(), atan() functions.
- Fixed an R300 driver bug that caused Xorg composite manager to crash
- Fixed R300 vertex program/matrix bug (10848)
- GLSL dFdx() and dFdy() work for fragment program inputs now (texcoords)
- Specifying an invalid texture unit as a sampler could lead to a crash
- The GLX protocol request for glXDestroyPBuffer() was incorrect (bug 10983)
- ARB vp state.light[n].half value was incorrect (bug 10987)
- Fixed a positional light source bug (bug 11009)
- Fixed point size attenuation problem (bug 11042)
- glPopAttrib didnt restore texture objects LOD bias (bug 11049)
- Fixed a TLS / TEXTREL problem (bug 7459)
Internal code changes
- Some texture code consolidation and simplifiction (Ian Romanick)
- R300 driver clean-ups.
Driver Status
- Driver Status
---------------------- ----------------------
- DRI drivers varies with the driver
- XMesa/GLX (on Xlib) implements OpenGL 2.1
- OSMesa (off-screen) implements OpenGL 2.1
- Windows/Win32 implements OpenGL 2.1
- Glide (3dfx Voodoo1/2) implements OpenGL 1.3
- SVGA unsupported
- Wind River UGL unsupported
- DJGPP unsupported
- GGI unsupported
- BeOS unsupported
- Allegro unsupported
- D3D unsupported