Distortion Meter & Function Generator

Revision Policy 
All our software is under constant development. It's our policy to post revisions whenever we are notified of any problem with the software , whether it be a small problem or a large problem. If your software download came in a zip file, when updating the software, it is best to uninstall the software, and then install the new software. (Leave shared files on your computer when un-installing). 

If the installer package came in an exe file, you do not have to uninstall first. We are in the process of changing all installer packages to the new exe format. Previous versions may be found in the File Archives

With all the different sound cards and unique computer configurations problems are inevitable.

We thank all the loyal users of the software for their problem reports.

Reported Problems and Status of Problems

None Reported

Revision History

Version 2.3.1 Build June 6, 2012
Fixed bug where some sound cards would report an erroneous level and sometimes crash the software. Only applies to Windows XP users.  

Version 2.3.0 Build July 13, 2010
Virtual Audio Cables now supported under Windows XP. Cleaned up some error handling making error messages less cryptic. Editorial changes to help file. 

Version 2.2.5 Build Oct 08,2010
Fixed problem under Windows Vista and Windows 7 where 'Master Mute' would not respond correctly

Version 2.2.4 Build August 07,2010
Fixed problem where software would hang occasionally at the splash screen. Applies only to Vista and Windows 7.

Version 2.2.3 Build Feb 27 2010
Fixed problem using Windows 2000 and Windows XP where software would identify a Line control on the Playback side when sound card didn't have a Line control. Fixed software where it would find a "Mon Off" control when sound card didn't actually have "Mon Off" control.

Version 2.2.2 Build Jan 31 2010
Fixed problem with sound controls when running Windows XP. Some sound cards would not respond correctly to the Microphone and Line mute controls on the Playback side. Only Windows XP is affected.

Version 2.2.1 Build 10/12/09
Fixed installer program where runtime files were not installed correctly on some computers. Problem would manifest itself with error messages from the software that indicate a .ocx file was out of date or not installed correctly.

Version 2.2.0 Build 07/11/09
Evaluation software now runs for 5 hours of cumulative running time.

Version 2.1.3 Build 02/25/09
Fixed problem where sometimes the THD number would not calculate and display correctly, this seemed to be related to language settings on the user's computer.

Version 2.1.2 Build 01/18/09
Fixed problem while running under Windows Vista, where software would just stop responding with some sound cards that use some non Microsoft standard controls. One example was the Creative Labs Live! , 24 bit external USB card.

Version 2.1.1 Build 12/19/08
Installer package version 2.1.0 posted on the 18th was missing mmstdfmt.dll. We apologize for the problem

Version 2.1.0 Build 12/18/08
Fixed problem with error message "msstdfmt.dll not found" starting software.

Version 2.0.9 Build 07/03/08
Fixed problem where sometimes the distortion meter would lock on to erroneous signals. Also
fixed problem if only the left channel had signal, meter wouldn't  recognize any input.

Version 2.0.8 Build 06/29/08
Fixed problem where changing sample rates would result in quite different distortion level readings

Version 2.0.7 Build 06/26/08
Fixed problem with installer package that may have not registered some files correctly and the software
would not find the sound card in the computer or would stop responding

Version 2.0.6 Build 06/12/08
Fixed problem where Print selection under the File Menu was always disabled.

Version 2.0.5 Build 03/25/08
Fixed problem where lock frequency would show incorrect frequency with sampling rates
other than 44100.

Version 2.0.4 Build 02/27/08
Fixed problem where help file sometimes wouldn't display.

Version 2.0.3 Build 02/05/08
Improved error handling for sound card issues and DirectX issues. Added
error files that may be emailed to RoMac software for troubleshooting
sound card and DirectX issues

Version 2.0.2 Build 11/04/07
Improved recovery of interruptions in the Function Generator due to workload of other
tasks running. Only applies to Vista users. 

Version 2.0.1 Build 06/21/07
Installer package includes updated dll for Windows Vista users.

Version 2.0.0 Build 04/20/07
Initial release Windows Vista compatible. Added selection of sound card devices independent of
operating systems default devices (all operating systems).