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3d spatialization of sound

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3D Spatialization of Sound

3D Spatialization of Sound


3D Spatialization of Sound is a Linux/X11 port of the 3D spatializer library from the CRC. more>>
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.
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Added: 2006-10-19 License: GPL (GNU General Public License) Price:
1114 downloads
3D RSS Feeds Icon for Linux -

3D RSS Feeds Icon for Linux -


1 Free Rss Feed icon designed with 3D look. more>> Description:
1 Free Rss Feed icon designed with 3D look.
Content:
RSS feeds
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Download (96KB)
Added: 2009-04-18 License: Freeware Price: Free
190 downloads
The Analysis & Reconstruction Sound Engine 0.1

The Analysis & Reconstruction Sound Engine 0.1


Analysis & Reconstruction Sound Engine is a program that analyses a sound file into a spectrogram. more>>
The Analysis & Reconstruction Sound Engine also known as ARSE, is a program that analyses a sound file into a spectrogram and is able to synthetise this spectrogram, or any other user-created image, back into a sound.
The ARSE consists in two main parts, a spectrographer with a base-2 logarithmic frequency scale, and a spectrogram synthetiser.
Unlike most spectrographers which are based on STFTs and perform the analysis by cutting the signal into small time slices to analyse these slices in the frequency domain, the ARSE is based on a filter bank followed by envelope detection, which means that the signal is cut into small frequency-domain slices, and then analysed in the time domain.
The filter bank is, as of now, made up with overlapping bandpass FIR filters defined logarithmically. Once the original signal is filtered with the filter bank, each resulting signal is sent to envelope detection.
Envelope detection in the ARSE isnt based on a Hilbert transform and peak detection, as its usually done. To achieve envelope detection, we first perform a FFT on the signal, zero-pad the beginning of the signal in the frequency domain according to a user-defined setting, then we perform an IFFT, and, now in the time domain, we turn every negative sample into a positive one, and we low-pass filter (and eventually decimate) the signal according to the same user-defined setting as we previously used.
For instance, lets say we have a signal with a sampling frequency of 44,100 Hz, and that we want to obtain an envelope for it which sampling frequency would be 100 Hz. Once we perform the FFT, we add enough zeroes in the frequency domain at the beginning of our signal so that every frequency component shifts by 50 Hz (100 Hz divided by two, it will later appear obvious why), and we perform an IFFT. Our signal now has a sampling frequency of 44,200 Hz (44,100 + 100 Hz), and the original signal which previously spanned from 0 Hz to 22,050 Hz now spans from 50 Hz to 22,100 Hz.
Now we turn every time-domain sample into its absolute value by turning every negative sample into a positive one. To perform this on a signal means that, for example, a sine wave of a certain frequency would become a signal which periodicity would be twice that frequency. Once we low-pass filter that signal to twice that frequency we obtain that signals envelope. In our case, now that we have obtained the absolute values for our signal, since the periodicity of a sine at the lowest frequency - 50 Hz - would now be 100 Hz, we only low-pass filter our signal at 100 Hz to obtain the original signals envelope. We can now decimate the signal to a sample rate of 100 Hz.
The resulting envelope for each frequency band makes the horizontal lines of the image representing the spectrogram. The amplitude of the envelopes translate linearly into intensity in the image.
The spectrogram synthetiser is based on modulation using horizontal lines of the image as envelopes. Each horizontal line is upsampled to the sampling rate of the desired final signals sampling rate, and is then modulated with, depending on the synthetisation mode chosen by the user, sines matching to the central frequency each horizontal line represents, or noise filtered through the filter bank.
Enhancements:
- Replaced fixed phase sine generation with random phase sine generation
- Changed the PRNG
- Removed the unused code
- Removed every call of nearbyint() due to compatibility issues
- Included the necessary files in order to make using ./configure && make && make install
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Added: 2007-05-29 License: GPL (GNU General Public License) Price:
883 downloads
DSI Sound Station 1.0

DSI Sound Station 1.0


DSI Sound Station is broadcast software for everything related to audio and station management. more>>
DSI Sound Station is broadcast software for everything related to audio and station management.

DSI Sound Station is for broadcast radio and TV stations of all sizes. It provides hard-disk audio recording, an on-line newsroom, a disc/media cataloguer, and sales utilities (like contracts and invoices).
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Added: 2006-04-17 License: GPL (GNU General Public License) Price:
1331 downloads
3D Pong 0.5

3D Pong 0.5


3D Pong project is a simple Xlib vector-based ping-pong game. more>>
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
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Added: 2006-11-10 License: GPL (GNU General Public License) Price:
1090 downloads
3D Python OpenGL Chess Game 1.0

3D Python OpenGL Chess Game 1.0


3D Python OpenGL Chess Game project is a 3D chess game in Python with OpenGL. more>>
3D Python OpenGL Chess Game project is a 3D chess game in Python with OpenGL.

3D Python OpenGL Chess Game is a normal chess game that has no computer player (yet). You can play against a friend on your PC.

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Added: 2007-01-11 License: GPL (GNU General Public License) Price:
1021 downloads
3D Tetris 4.1.0

3D Tetris 4.1.0


The goal of the 3D Tetris game is to complete a layer with blocks without gap which will cause the layer to disappear. With ongoing time this will bec... more>> <<less
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Added: 2009-04-25 License: Freeware Price: Free
202 downloads
3D Realms Forums NavMenu 1.2.2

3D Realms Forums NavMenu 1.2.2


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

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Added: 2007-07-17 License: MPL (Mozilla Public License) Price:
830 downloads
SoundTouch Sound Processing Library 1.3.0

SoundTouch Sound Processing Library 1.3.0


SoundTouch Sound Processing Library is an open-source audio processing library. more>>
SoundTouch Sound Processing Library is an open-source audio processing library for changing the Tempo, Pitch and Playback Rates of audio streams or files:
- Tempo (time-stretch): Changes the sound to play at faster or slower speed than original, without affecting the sound pitch.
- Pitch (key) : Changes the sound pitch or key, without affecting the sound tempo or speed.
- Playback Rate : Changes both the sound tempo and pitch, as if an LP disc was played at wrong RPM rate.
Main features:
- Easy-to-use implementation of time-stretch, pitch-shift and sample rate transposing routines.
- High-performance object-oriented C++ implementation.
- Full source codes available for both the SoundTouch library and the example application.
- Clear and easy-to-use programming interface via a single C++ class.
- Supported audio data format : 16Bit integer or 32bit floating point PCM mono/stereo
- Capable of real-time audio stream processing:
- input/output latency max. ~ 100 ms.
- Processing 44.1kHz/16bit stereo sound in realtime requires a 133 Mhz Intel Pentium processor or better.
- Platform-independent implementation: The SoundTouch library can be compiled for any processor and OS platform supporting GNU C compiler (gcc) or Visual Studio, for example Win32, Linux, AIX.
- Additional assembler-level and Intel-MMX instruction set optimizations for Intel x86 compatible processors (Win32 & Linux platforms), offering several times increase in the processing performance.
- Compiled executable binaries available for Windows.
Enhancements:
- Add features/limitations/changes here
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Download (0.42MB)
Added: 2006-02-15 License: GPL (GNU General Public License) Price:
1354 downloads
Ice Sound Manager 0.57

Ice Sound Manager 0.57


Ice Sound Manager is a manager for sound events and sound themes for IceWM. more>>
Ice Sound Manager was designed to ease the management of sound events, sound themes, and the IceSound server in the IceWM environment under Linux/Unix. It is also intended to be an improvement upon the noble, but primitive icesndcfg.
The main improvements over icesndcfg include a support for sound event "themes", more comprehensive help, easy management and configuration of the IceSound server, a cleaner GUI interface, automatic starting of the IceSound server, and a more conservative approach to disk space usage. In addition, Ice Sound Manager includes a built-in "Setup" program which runs the first time you run Ice Sound Manager.
The application is written in Python (making it more easily ported across various platforms and architectures) and uses GTK through the PyGTK libraries. This application is available in both .tar.bz2, RPM, and static binary (for people without Python/PyGtk).
Please note that the tar.gz file does NOT need to be compiled (this is python, remember). System requirements are as follows: Python 2.2, PyGTK-2 1.9.9/2.0.0, IceWM (or IceWM-Gnome) 1.2.0 or better - with the IceSound Server executable (generally called, icesound or icesound-gnome). IceWM version 1.2.6 or better is highly recommended.
NONE of the following is required: Gnome, Gnome libs, or PyGnome (python-gnome). This application has NOT been tested with earlier versions of Python, IceWM, PyGTK, and IceSound Server. I cant say that it wont work with earlier versions, but I certainly cant say that it will. This application has NO dependencies on Gnome. 8-)
This software is distributed under the GPL license (included in the documentation and source code): Its free and open source for all legal and NON-commerical use, copying, modification, and redistribution, provided all of the authors credits are left in-tact and unmodified. This software is distributed AS-IS, with no warranty whatsoever. Copyright (c) 2002-2004 Erica Andrews (PhrozenSmoke[at]yahoo.com). All rights reserved.
Ice Sound Manager has been designed and tested in the following environment(s): Mandrake 8.1, SuSe 8.1, Kernel 2.4.8 / 2.4.19, Glibc 2.2.4 / 2.2.5, XFree86 4.0.1 - 4.3.0, Python 2.2 - 2.2.1, PyGtk 0.6.9/PyGtk-2 2.0.0, Gtk version 1.2.8-4-1.2.10, Gtk+2 version 2.0.6, IceWM 1.0.9 - 1.2.15, IceWM-Gnome 1.0.9 / 1.2.2, with both icesound and icesound-gnome sound server executables. The test computers (3) were all Pentium 1, ranging in memory from 64MB to 256MB - nothing spectacular. It should run well on very old computers.
Requierments:
- Access to a Bash shell (very important), Python (2.2 or better), PyGtk-2 (1.9.9/2.0.0 or better), and Gtk+ 2.0.6 or better - neither Gnome nor PyGnome is required. (IceWMCP versions 2.5 and earlier require Gtk+1 and PyGtk-1 0.6.9) Repeat: IceWM requires NOTHING gnome-related.
- Also, your version of PyGtk should have the Gdk-Pixbuf modules on your system. Please run ALL IceWMCP programs from a BASH shell: Using other shells such as ksh, pdksh, csh, tcsh, etc. is likely to cause problems. If your IceWMCP programs have trouble launching other applications, it is most likely because you are using something other than a Bash (/bin/bash) shell. Run the programs from Bash...period! If you attempt to run the application and get ANY kind of error that says something like "Import Error", it means YOU do not have all the necessary Python libraries installed or do not have them installed correctly: This is NOT a bug, so do not file a bug report when you dont have the necessary software properly installed. Getting Python and PyGtk and getting them setup right is YOUR business. DO NOT ask for help installing Python, PyGtk, or GdkPixbuf. I recommend you get them from: http://speakeasy.rpmfind.net. If you are using a Python version lower than 2.2 and are too lazy to upgrade, use the "binary" distribution of IceWM Control Panel, or dont bother at all. NOTE: These requirements apply only to the standard pure-python version of IceWM Control Panel. Compiled, binary copies of IceWM Control Panel are stand-alone executables that do NOT require Python or PyGtk.
- Disk space requirements: The standard, pure-Python version of IceWM Control Panel uses approximately 1.75-2.2 MB of disk space - very small! The compiled, binary version of IceWM Control Panel uses about 3.7 MB of disk space. Yes, the binary version is large, so people too lazy or impatient to install Python and PyGtk properly and choose to use the stand-alone binary version will pay with disk space. At last check, the Hardware (or System) plug-in uses about 1.9 MB of disk space (most of it being the hardware ID data file).
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Added: 2005-05-10 License: GPL (GNU General Public License) Price:
1635 downloads
PulseAudio Volume Meter 0.9.2

PulseAudio Volume Meter 0.9.2


PulseAudio Volume Meter is a simple GTK volume meter for the polypaudio sound server. more>>
PulseAudio Volume Meter is a simple GTK volume meter for the polypaudio sound server.

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Download (0.085MB)
Added: 2006-07-10 License: GPL (GNU General Public License) Price:
1205 downloads
Invasion 3D 1.0.2-Linux

Invasion 3D 1.0.2-Linux


Invasion 3D is a free multi-platform 3D arcade game, based on OpenGL and SDL and available for Windows and Linux. This fun and addictive game features... more>> <<less
Download (2332KB)
Added: 2009-04-17 License: Freeware Price: Free
197 downloads
Sound 1.4

Sound 1.4


Sound lets you mathematically create sounds in Java. You define your sounds in terms of 16-bit linear code for the waveform, -- an array of samplings. The U_Law.class will then convert that to (or from) *.AU mu-law 8-bit encoding format which you can then play with AudioPlayer.player.start(bis) in an application or with Applet.getAudioClip in an Applet. This is just a sample program. You would insert your own mathematical functions. more>>

Sound - Sound lets you mathematically create sounds in Java.

You define your sounds in terms of 16-bit linear code for

the waveform, -- an array of samplings. The U_Law.class will

then convert that to (or from) *.AU mu-law 8-bit encoding

format which you can then play with

AudioPlayer.player.start(bis) in an application or with

Applet.getAudioClip in an Applet.

This is just a sample program. You would insert your own mathematical

functions or cannibalise parts of the code.

Use winzip to extract U_Law.java and Sound.java with

folder names into the commindprodsound directory.

java com.mindprod.sound.Sound


Enhancements:
Version 1.4

add pad and icon


System Requirements:
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Added: 2007-05-23 License: Free Price: Free
15 downloads
Battle Just Started 0.1.2

Battle Just Started 0.1.2


Battle Just Started is a 3D arcade tank battle. more>>
Battle Just Started project is a 3D arcade tank battle.

Rendering is done using OpenGL, and direct rendering is recommended. The game is focused on multiplayer over LAN.

An AI is also present, but is not very strong.

World simulation is done via ODE, and sound is done using OpenAL and SDL_mixer.

The game has currently 3 maps, 5 tanks, and 4 weapons.

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Download (28.3MB)
Added: 2007-01-22 License: GPL (GNU General Public License) Price:
1005 downloads
glTron 0.70

glTron 0.70


glTron project is a tron-like game with a 3D view. more>>
glTron project is a tron-like game with a 3D view.

glTron is a tron-like lightcycle game with a nice 3D perspective. 3D acceleration is recommended.

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Download (3.9MB)
Added: 2006-11-06 License: GPL (GNU General Public License) Price:
2473 downloads
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