Slow-Scope

UPDATE 4.1: In this new version of Slow-Scope:

• The mode switch, which determines whether the absolute minimum, mean or maximum value within the window is plotted, was previously global in its effect. It has now been replaced by four individual mode switches, one for each channel.

UPDATE 4: In this new version of Slow-Scope:

• Fixed a bug where the on/off state of each trace was not, under certain circumstances, correctly restored from a preset.
• Added new mode called Min where the value plotted is the measured voltage within the window that is closest to zero. This can be handy for analysing gate signals that have a very short off time, even as short as one sample.

UPDATE 3: In this new version of Slow-Scope:

• Solo Display mode which turns each of the Show/Hide buttons into Solo buttons that show just the selected channel and hide the other three.
• Peak Voltage Display, showing the maximum and minimum voltages received on each channel.
• Split Display, separates the four traces vertically to reduce clutter.

UPDATE 2: In this new version of Slow-Scope:

• Individual traces can be switched on and off.
• The measure line is now a cross-hair and measures along both axes.
• The font size displayed on the measure cross-hairs now has three, selectable sizes: small, medium and large (for people like me with failing eyesight).
• The display can now be frozen for closer examination.
• A jpeg copy of the display can now be saved to file with a size between one and four times the pixel dimensions of the on screen display.

UPDATE: Extra channel added so it can now display up to four separate channels.

This module is very much like a multi-trace oscilloscope but, as the name Slow-Scope implies, is designed to operate at much lower frequencies than the fixed, 48kHz internal sample-rate of Voltage Modular. It is hence more suited to view slowly changing values such as modulation control voltages rather than audio signals. It is especially well suited to display output from the Centripidity Complex LFO to allow visual tweaking of the wave shape.

It achieves this by processing incoming voltage, not as individual samples but, by averaging over a user specified time-window, variable between 1 - 100ms. Alternatively, it can display the maximum value occurring within that time window. This allows slower changing signals to be viewed in near-real time.

The module can display four separate signals, all on the same axes, and each in a different colour for easy identification. The range of voltages displayed, and voltage offset of the display’s centre line voltage, can be modified with the Range and Offset knobs. Whatever the Offset, a fine yellow horizontal line will display the zero voltage level, unless the Range and Offset are set such that 0V does not lie within the display’s vertical limits.

Note that these vertical limits can always be viewed as axes labels just to the right of the display’s upper and lower right-hand corners.

To allow closer measurement of a signal's voltage, hovering the mouse pointer over the screen will produce a dashed horizontal (constant voltage) line annotated with the voltage represented at that level.