Hi Doug,
What you are most likely seeing is the Kasina recognizing your signals as AudioStrobe and applying the first ColorSet which is all light channels. In addition to the light channel tones, SpectraStrobe requires a reference track. This track consists of a 18.2khz sine wave that is modulated with a pulse wave at 10hz. In addition the modulation is 180 degress out of phase between the channels.
The easiest way to create the reference is to modulate an 18.2khz sine wave with an autopan LFO set to 20hz, with the waveform being either a sine or smoothed square.
The reference signal acts as an identifier, as the Kasina performs auto-sensing between SS and AS. You will notice the top line of text on the display on the Kasina change to indicate when SpectraStrobe is recognized. The reference track also sets the dynamic range of the signal in a ratio of 4:1. That way, if the user changes the volume of the source (on an AUX for instance) the full range of brightness is still delivered.
In pracitice, the total amplitude of the reference signal is normalized to -36db and each light channel normalized to -24db. This keeps the tones inaudible and allows around -2db of headroom for the soundtrack (which should be normalized to this at max)
You may want to experiment with my Audacity Mind Machine Suite here:
https://github.com/scottosx/Audacity-Mind-Machine-Suite It helps to demonstrate how to create light signals as well as provide handy tools.
There is also a set of color signal wav files for samplers here:
https://github.com/scottosx/SpectraStrobe-Sampler-Files
I have also created an AVS Color picker that allows you to pick colors and get values for the light channels either in db or linear values as well as more standard values. It is here:
https://github.com/scottosx/AVS-Color-Wheel/releases
On each of those github repositories you will want to download the files from the Releases section.
As you can see slowly I am building up a comprehensive set of tools. I suspect that you will be able to put them to good use. I need to make more documentation for those who may not yet have skills with audio production and that is coming.
Thank you very much for the compliments. If there are any further questions I can answer, then I am happy to do so. I look forward to hearing and seeing! some of your work.
Best,
Scott
Bookmarks