these pages last revised 
 May 09, 2008

Liberty Instruments, Inc.

What's New

PRAXIS v2.49a 

CONTROLLING SOUNDCARD MIXERS IN VISTA 
(revised 10 Nov 2007)

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Audio DiffMaker
v2.00
NEW VERSION 2 NOW AVAILABLE
...find and isolate differences made by components or tweaks to the audio signal

Improved operation. With new examples.  -- Does the "green pen" treatment really do anything to a CD's sound?  Download new Dyf result files to hear for yourself!  

Having trouble getting low Difference signals in DiffMaker?  Click here for some tips.

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VISTA:  
Praxis version 2.4x  is now compatible with Windows Vista (though many soundcards still aren't!!).  If you have the choice, though, stay with XP.  VISTA's sound card handling is less "measurement system friendly" than in previous Windows versions.

SEE NOTE ON SOUNDCARD MIXERS IN VISTA (revised 10 Nov 2007)

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Using the M-Audio Transit under VISTA.  M-Audio has a beta driver available, but using it can be tricky.  Read how here.

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A winner, after all:
Portable 24/96 and 24/192 operation for under $120!:
Using the EMU 0202 USB with PRAXIS

Liberty Instruments' Freeware application:

:
SynRTA
Synchronized RTA analyzer for setting up subwoofers and optimizing listening rooms. Geared toward home audio users.. Use like an RTA, but without the waiting.
Download

Ordering
Worldwide Dealers

Liberty Instruments

Products

PRAXIS

AudioPass

Audio DiffMaker

LspCAD
LspCAD PRO

LabJack

Sound cards

Microphones and Accessories

Articles

Distortion Isolation article and result wav files.
Updated May 7, 2006

Praxis users using the Audigy 2 ZS Notebook (and probably other Audigy 2 sound cards) should update to PRAXIS version 2.3x and also see the revised article
"Making 96kHz Sample Rate Measurements with PRAXIS on a Laptop
with the Audigy 2 ZS"

What makes a speaker sound good?  An exploration into measurements on a multimedia speaker (the now discontinued Monsoon MM1000 panel) subjectively determined to "sound good", to try to see what makes it tick.

Room Sound Convolution
    (Revised 6 Sept 2004)
pdf instructions and data files detailing how to use PRAXIS to archive and reproduce the sound of a room and sound system.  Can be used even in PRAXIS' no-cost "Free Mode".  Used in the SynAudCon Architectural Acoustics course.

Tracking down Audio Glitches
Settings and troubleshooting hints to use when  your computer and soundcard is missing samples, losing synch, or stuttering.

BUG info for Script Writers.  Check this if you are writing a Praxis Script in DelphiScript, and using more than two forms!

Ten Essential PRAXIS Tricks That You Can't Possibly Continue to Live Without Knowing

Taking the SynAudCon Architectural Acoustics course? Click here for the PRAXIS files you need!.

Example Scripts
  Embedding a web browser within your scripts

Downloads
PRAXIS

LspCAD

discontinued systems

Support
PRAXIS

PRAXIS FAQ

 LAUD and IMP

About Us
Contact Info

 

Liberty Instruments, Inc. develops and markets audio measurement and analysis software and hardware for acoustics, designers of loudspeakers and electronics, engineers, and researchers. 


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