Visual Analyser Project

What's new

10.0.5 NE version

+ Added calibration in dB

+ A bug in rms and pp calculation

+ A bug in Visual Tool Phase

+ In custom function "manual" now you can add more harmonics (99)

+ Added the possibility to change the frequency also with a custom waveform: for now is a "beta" feature

+ Minor bugs

10.0 version

I decided to increment by one the number of release, instead to change the name in "VA 2007", for a lot of reasons. Below all the "news" related to this new and strongly improved version.

+ The phase window has been completely fixed, now is more stable and reliable;

+ A - B and B - A option added; more correctly  I changed the old A - B and B - A in "Transfer function" i.e. A/B and B/A. Actually it was correct also in the previous version. I fact, I intended A - B and B - A in the logarithmic spectrum, that is the difference in logarithms is the ratio in "standard" world.

+ Linear Spectrum completely updated, is now possible display the scale in VOLT and %full-scale and you can "move" the spectrum scale with mouse as for dB scale;

+ In function generator added "square aliased", a fast version of square wave but with aliasing;

+ The "capture spectrum" window now as the possibility to display the phase, and save/open both the spectrum and the phase; added also the possibility to capture linear spectrum;

+ Added screenshot capture in .bmp format;

+ In Voltmeter function added the "true rms" value and mean value. The voltmeter has been improved with a new interface;

+ Improved autoscale in linear and dB spectrum;

+ "same as" button in general setup of Function generator;

+ Visual Tool of Function Generator now more powerful and fixed; % fullscale added;

+ % full scale and dB also in standard function generator;

+ A lot of minor bugs fixed.

9.0.6 version

Waiting for the 2007 version, some bug has been fixed and other changes has been done.

+Log scale in phase window as for the spectrum analyzer;

+A bug in the scope scale; sometime it was divided by 2;

+The calibration "tab" (Settings window) has been improved with more check

+The frequency compensation function has been fixed and a "clear button" added for each channel

+The 9.0.6 version has been compiled with the new RAD Studio 2007

In the near future an important Electronic magazine (www.nuovaelettronica.it) is going to publish an important project about Visual Analyser...

9.0.1 version

I'm awfully sorry for the (little and stupid) bugs present in the 9.0 version. Now should be all fixed, in particular:

+The log scale in function generator has been fixed, it disappeared in some conditions

+Changing the range the cursor of the trackbar of the function generator was not updated properly

+At first installation a wrong "bit per samples" in function generator caused the "wrong parameter" error; anyway it disappeared as soon as the general setup was used

+The setup program of 9.0 version did not set the start directory at the installation value (for instance "c:\programs\sillanumsoft") so the "check.exe" utilities could not be found when the user press the "check new version" button. On the other hand it is  always possible to set it manually in the 9.0 version, if you don't want to download the 9.0.1. You can also use the "check" program as a standalone program, for example to download the 9.0.1 version.

9.0 version

+VA has been compiled with the latest version of Borland Developer Studio

+As consequence of the previous point, the 24 bit soundcard are correctly detected

+The main window has a new tab for more "fast" option

+The "ON" button include also the off button

+Minor bugs on calibrate function and Compensation function

+Auto update window added; you can check online if a new version of VA is ready to download. If yes, you can download it and install automatically.

+Added correct detection of Windows version, VISTA included

+Log scale has been strongly improved (possibility to start from 1 Hz)

+Possibility to trig left channel with right channel (thanks to Dave)

+Log scale for function generator (thanks to Dave)

-Minor bugs with VISTA: with some kind of soundcard problems in function generator

-As soon as possible: log scale in sweep; "smooth transition" between two adjacent frequencies in function generator.

-some minor bugs in the latest added feature

8.30.19 version

+a lot of minor bugs fixed

+more option on main window ()

8.30.11 version

A little last-minute bug was found in compensation window.....sorry...just fixed.

8.30.10 version:

+added COMPENSATION window; you can add a frequency compensation (checkbox "comp", or setting window/spectrum/compensation button). A powerful window for defining new custom frequency compensation curves has been added. For example you may want to compensate the microphone frequency response. In the directory "c:\...\sillanum soft\frequency compensation"  has been added some microphone compensation files.

+possibility to define a custom X-axis scale for spectrum analyser. Go to setting window and then spectrum tab; you'll find a "freq. Range" groupbox with the possibility to define a custom x-axis frequency range

+a new visual tool for custom function defining window (1.0). Do not forget to disable the "loop mode" in main tab of the wave window; otherwise you'll not be able to push the visual tool button

+a lot of minor bugs has been fixed

+I've been looking for fix the 24 bit soundcard problem, fixing some little bug. Indeed, Visual Analyser should be able to detect correctly the 24 bit soundcard from the firsts version. I used the Windows API to do that, but unfortunately with the USB souncard and with some kind of PCI soundcard seem to arise problems. I think I should use the ASIO drivers, but for now I've no time to add. If someone has some suggestion about the standard API, thank you!

+a renewed info window

8.10 version:

+capture scope window : completely new, with possibility of spectrum computation. Remember, you can scroll graphs with right mouse button, zoom by dragging left mouse button and undo zoom dragging a reverse square.

+in capture window you can define a pre-acquisition level: go to setting/"capture scope"  and select the number of pre-acquisition buffer (up to 5 buffers)

+capture spectrum window completely new

+minor bugs

Press Releases

These are the press releases we've issued over the last year. You may want to search for topics by keyword.

• January 2004      Elettronica IN
• December 2006  Fare Elettronica (part one)
• January 2007      Fare Elettronica (part two)
• September 2007 Nuova Elettronica (part one)
• Dicember 2007   Nuova Elettronica (part two)

Latest VA review:

Send an e-mail to  va@sillanumsoft.org for questions and/or suggestions about the web site. The webmaster is Alfredo Accattatis
Last modified: 04/12/08